Relevant bibliographies by topics / (Ni)3(Al,X)

Academic literature on the topic '(Ni)3(Al,X)'

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Published: 6 September 2023

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Journal articles on the topic "(Ni)3(Al,X)"

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SHEN, DIAN HONG, HUA LU, XINGFANG WU, NATALIA FROUMIN, and MICHA POLAK. "WETTABILITY AND MICROSTRUCTURES OF Ni-Al/TiCx SYSTEM." International Journal of Modern Physics B 16, no. 01n02 (January 20, 2002): 19–24. http://dx.doi.org/10.1142/s0217979202009408.

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Wettability and microstructures of Ni-Al/TiC x composites have been studied by measuring the wettability contact angle using the "sessile drop" method, and by observation using a scanning electron microscope (SEM) and an analytical transmission electron microscope (ATEM), together with an energy dispersive X-ray spectrometer (EDS). The equilibrium contact angle of Ni-Al alloys on TiC x (X = 0.7-1) vs. Ni content showed that the wetting angle depends on the concentration of C in TiC x. The results agreed with the observation of morphology at the interfaces between the hard phase skeleton of TiC x (x = 0.7, 0.9) and metallic phases. The concentration distance plot for Ti , and Ni across the interface of Ni 3 Al/TiC 0.7 showed that an extensive area of intermetallic compounds can be observed at the Ni 3 Al/TiC 0.7 interface. The microstructure analysis suggested that Ti in TiC 0.7 is easier to dissolve into the molten alloy than that in TiC 0.9. Some periodic zigzag fringes were also observed in the interface between metallic phase and carbides in the sample of Ni 3 Al/TiC 0.7. The formation of this periodic zigzag fringe, which may be a growth zone of a new Ti-Ni-Al phase, would occur during the initial stage of solidification in the samples obtained by infiltration. This behavior in the interface of Ni-Al/TiC x composite would affect their strength, creep resistance at elevated temperatures and low-temperature toughness.
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FENG, LIN, WENXING ZHANG, ENKE LIU, WENHONG WANG, and GUANGHENG WU. "MARTENSITIC TRANSFORMATION AND MAGNETIC PROPERTIES OF NiMnAl:Fe, Co FERROMAGNETIC SHAPE MEMORY ALLOYS." Functional Materials Letters 06, no. 06 (November 27, 2013): 1350050. http://dx.doi.org/10.1142/s1793604713500501.

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A series of Ni 50-x Fe x Mn 34 Al 16(0 ≦ x ≦ 18) and Ni 38 Fe 12-z Co z Mn 34 Al 16(3 ≦ z ≦ 6) ribbons were prepared by the melt-spinning method. With Fe substitution for Ni in Ni 50 Mn 34 Al 16 ribbons, the magnetization of the austenitic phase increases greatly while that of the martensitic phase increases little. Thus, in the magnetic field of 5 T a large magnetization change (22 Am2/kg) during the martensitic transformation is observed in Ni 38 Fe 12 Mn 34 Al 16 ribbon. The effect of Fe substitution for Ni on the magnetic modulation was investigated, which is attributed to the change of the magnetic interaction between Mn – Mn atoms. By substituting Co for Fe in Ni 38 Fe 12 Mn 34 Al 16 ribbons, a magnetic-field-induced martensite-austenite transformation is observed in Ni 38 Fe 9 Co 3 Mn 34 Al 16 ribbon.
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Myoujin, Kenichi, Takashi Ogihara, Koji Nakane, and Nobuo Ogata. "Synthesis and Characterization of Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2(M=Fe,Mg,Al) Particle by Aerosol Process." Key Engineering Materials 350 (October 2007): 203–6. http://dx.doi.org/10.4028/www.scientific.net/kem.350.203.

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Spherical Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2 (M=Fe, Mg, Al) precursor powders were synthesized by ultrasonic spray pyrolysis using aqueous solution of metal nitrate. X-ray diffraction (XRD), scanning electron microscope (SEM), BET method using N2 adsorption analysis and Battery tester were used for determination of the composition, morphology, particle size, surface area and electrochemical properties. SEM observation showed that the size of as-prepared particles were about 0.9 μ with narrow size distribution. The crystal phase of Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2 (M=Fe, Mg, Al) was resulted in layered rock salt structure with R3m space group by calcinations at 1023 K for 10 h. No impurity-related peaks are observed from the XRD pattern with various doping metals. Mg and Al doped Li(Ni1/3Co1/3Mn1/3)O2 showed very good cycling stability. The Mg substitution for Ni led to the most excellent. On the other hand, the capacity degradation during cycling was observed by Fe substitution for Mn doped Li(Ni1/3Co1/3Mn1/3)O2.
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Chakravorty, S., and D. R. F. West. "Constitution of Ni3Al–Ni3Mo–Ni3W section of Ni–Al–Mo–W system." Materials Science and Technology 2, no. 10 (October 1, 1986): 989–96. http://dx.doi.org/10.1179/026708386790328119.

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Blinov, A. M., V. K. Portnoy, S. D. Kaloshkin, and I. A. Tomilin. "Formation of Ni-Al and Ni-Al-X Phases by Mechanical Alloying." Journal of Metastable and Nanocrystalline Materials 20-21 (July 2004): 151–56. http://dx.doi.org/10.4028/www.scientific.net/jmnm.20-21.151.

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Tixier, S., P. Böni, and H. Van Swygenhoven. "Hardness enhancement of sputtered Ni 3 Al/Ni multilayers." Thin Solid Films 342, no. 1-2 (March 1999): 188–93. http://dx.doi.org/10.1016/s0040-6090(98)01495-3.

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Narasimhan, Tiruppatur Subramaniam Lakshmi, Dieter Kath, Egbert Wessel, Torsten Markus, and Klaus Hilpert. "Knudsen effusion mass spectrometric studies of the Al–Ni system: Thermodynamic properties over {AlNi + Al3Ni2} and {Al3Ni2 + Al3Ni}." International Journal of Materials Research 97, no. 6 (June 1, 2006): 802–7. http://dx.doi.org/10.1515/ijmr-2006-0129.

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Abstract Vaporisation studies on Al–Ni alloys with x(Ni) = 0.43, 0.42, 0.35, and 0.32 were carried out by Knudsen effusion mass spectrometry. Partial pressure-temperature relations of Al(g) over the two phase regions {AlNi + Al3Ni2} and {Al3Ni2 + Al3Ni} were determined in the temperature ranges 1104 – 1278 K and 1021 –1122 K, respectively. The corresponding equations are log(p(Al)/Pa) = –(20 039 ± 84)/T(K) + (13.464 ± 0.070) for {AlNi + Al3Ni2} and log(p(Al)/Pa) = – (16 836 ± 235)/T(K) + (11.345 ± 0.219) for {Al3Ni2 + Al3Ni}. The vaporisation reactions, Al3Ni2.025(s) = 2.6436AlNi0.766(s) + 0.3564Al(g) and Al3Ni(s) = 0.572Al3Ni1.747(s) + 1.284Al(g) were evaluated and subsequently the enthalpy and Gibbs energy of formation of Al3Ni1.747(s) were derived.
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Ovcharenko, V. E., Sergei Grigorievich Psakhye, and E. N. Boyangin. "Bulk Nanostructured Ni3Al Intermetallic and Ni3Al-Base Alloy." Applied Mechanics and Materials 682 (October 2014): 210–15. http://dx.doi.org/10.4028/www.scientific.net/amm.682.210.

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We show here that Ni3Al compound which is widely used as the base metal for advanced multipurpose hot-resistant alloys may be efficiently bulk nanostructured for improving its physical and strength characteristics. Developing the nanostructured component in the bulk of the intermetallic compound is achieved by plastic deformation of an SHS product during its synthesis and crystallization under conditions of thermal explosion of nickel/aluminum powder mixture of stoichiometric composition. It was shown that the nanosize component is formed on the basis of intermetallic Ni3Al synthesized by SHS under hot forging conditions from nickel/aluminum powder mixed with an inert binder component. Developing the nanosize structural components improves strength of the intermetallic alloy.
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KIM, Y. W., G. A. WHITE, R. REIBEL, and R. J. SMITH. "ALLOY FORMATION OF ULTRATHIN Ni FILMS ON Al(111) SURFACE AT ROOM TEMPERATURE." Surface Review and Letters 06, no. 05 (October 1999): 781–86. http://dx.doi.org/10.1142/s0218625x99000792.

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The growth characteristics of ultrathin Ni films deposited on Al(111) surfaces at room temperature have been studied using high energy ion scattering/channeling (HEIS), X-ray photoelectron spectroscopy (XPS) and low energy ion scattering (LEIS). Ion channeling results show that Ni atoms deposited on the Al(111) surface react with Al substrate atoms to form two different Ni–Al alloys between 0 and 5.5 ML of Ni coverage. Alloy phases of Ni 2 Al 3 up to 1.5 ML and NiAl up to 5.5 ML were determined by XPS peak analysis. At higher Ni coverage, LEIS and XPS spectra suggest that islands of Ni metal were formed on the surface. Diffusion of Ni into the Al substrate or segregation of Al to the surface was observed during the alloy formation. The Ni 2 Al 3 phase was apparently transformed into the NiAl phase by the additional Ni deposition, and the islands of Ni metal formed on the Al-rich surface of the NiAl alloy.
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Zhang, Li Peng, Xian Jin Yu, Zhi Wei Ge, Yun Hui Dong, and Dang Gang Li. "Co-Deposition of Al–Ni Alloy in NiCl2-AlCl3-1-ethyl-3-methylimidazolium Bromide ([EMIM]Br) Ionic Liquid." Applied Mechanics and Materials 121-126 (October 2011): 65–69. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.65.

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Al-Ni Alloys were obtained from NiCl2-AlCl3-1-ethyl-3-methylimidazolium bromide ([EMIM]Br) ionic liquid at room temperature. The analysis of Al-Ni alloys that co-deposited at different potentials for 2h were performed using Scanning Electron Microscopy (SEM) and X-ray diffraction analysis (XRD). It appears that Ni has been rapidly solidified in the alloys and homogeneous Al-Ni alloys can be obtained at room temperature. As increasing the overpotential, the amount of Ni in the alloys was decreased whereas the amount of Al was increased. The chloride pitting potentials of alloys with the molar ratio of NiCl2/AlCl3/[EMIM]Br 0.03:2:1 was approximately 0.3 V more than pure Al.
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Dissertations / Theses on the topic "(Ni)3(Al,X)"

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Овчаренко, О. О., М. Д. Сахненко, and М. В. Ведь. "Електрохімічний синтез дисперсно-зміцнених композитів Ni-Al[2]O[3]." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45670.

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Призначення електрохімічних металевих покриттів полягає, головним чином, в захисті поверхні деталей і виробів від корозії, а також, надання їм декоративного виду. Композиційні електрохімічні покриття (КЕП) використовують для підвищення твердості, зносостійкості, жаростійкості деталей машин, механізмів, поліпшення їх антифрикційних властивостей, підвищення коефіцієнта віддзеркалення і поліпшення ряду інших характеристик.
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LEAL, NETO RICARDO M. "Sintese por combustao do NbAl-3 e de ligas do sistema Nb-Ni-Al." reponame:Repositório Institucional do IPEN, 1998. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10661.

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Tese(Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Javel, Jean-François. "Suivi par diffraction X en temps réel de la formation par combustion auto-entretenue d'intermétalliques : cas de composés appartenant aux systèmes Al-Ni, Al-Ti et Al-Ni-Ti." Nancy 1, 1997. http://www.theses.fr/1997NAN10207.

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A l'aide d'un faisceau X intense fourni par le synchrotron DCI du LURE (Orsay) associé à un détecteur rapide de photons X, la synthèse par combustion auto-entretenue de composés intermétalliques appartenant aux systèmes AI-Ni, AI-Ti et AI-Ni-Ti a pu être suivie en temps réel. Généralement, pour chacune des expériences réalisées, une succession ininterrompue de 2048 diffractogrammes de 30 ms chacun est enregistrée. Le nombre important d'expériences réussies (environ 2/3) montre que le système de déclenchement des réactions (réalisé par notre équipe) et celui d'acquisition des diffractogrammes sont fiables. Grâce à des informations complémentaires, obtenues par l'observation à la microsonde d'échantillons dont la combustion a été brutalement stoppée, un mécanisme de réaction est proposé pour chacun des composés étudiés. Enfin, la présence d'un thermocouple à l'intérieur de chacun des échantillons et d'une caméra infrarouge a permis d'avoir une idée approximative de l'évolution de la température au cours de la combustion.
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Spätig, Philippe. "Rôle de l'activation thermique dans la plasticité de composés intermétalliques ordonnés: Ni₃(Al,X) /." Lausanne, 1995. http://library.epfl.ch/theses/?nr=1407.

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Souza, Marcos Vinicios de. "Estudo da reorientação de spin nos compostos RX2 (R = terra rara; X: Al, Ni)." Pós-Graduação em Física, 2013. https://ri.ufs.br/handle/riufs/5290.

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In this work, our initial efforts have been directed to study the behavior of the magnetization as a function of temperature, calculated according to the approximate method of the anisotropy constants and the resolution of a Hamiltonian (that includes the crystal field) as exemplified for the DyAl2 compound. Furthermore, we investigated the magneto-thermal characteristics of some members of the RX2 series (R: rare earth, X: Al, Ni), including spin reorientation (SR), by using a model Hamiltonian, that consists of localized magnetic moments interacting via exchange and crystal field interaction, in the molecular-field approximation. We studied how the SR depends on the direction of the application of magnetic field, the intensity of this field and temperature. For the magnetic calculations, the problem of self-consistency was solved by using a computational routine developed in the Fortran 90 programming language. We emphasize that special attention was directed to the crystal field, because of its high relevance to the anisotropic characteristics of the RX2 studied compounds. Thus, in our attempts to study the peculiarities of the rare earth elements, due to crystal field effects, we have not only considered the intensity change, but the direction change of the applied field. In the cases of both Er+3 and Tb+3 compounds, we obtained second-order or continuous magnetization behavior along the polar angle axis. We stressed that the crystal field terms plays an important role in the first order spin reorientation for Dy+3 and Ho+3 compounds. First, it can be revealed by the discontinuity in the Cartesian components of the magnetization vector as a function of the polar angle. Second, the discontinuity is of great importance in the calculation of latent heat associated to the spin reorientation in the case where the first order transitions were observed. Finally, we were able to separate the first and second order contributions of the anisotropic magnetic entropy change, which is the main result of this work.
Neste trabalho, nossos esforços iniciais foram direcionados a estudar o comportamento da magnetização em função da temperatura, calculado segundo o método aproximativo das constantes de anisotropia e da resolução de um hamiltoniano (que inclui o campo cristalino) como exemplificado para o composto DyAl2. Além disto, investigamos as características magneto-térmicas de alguns integrantes da série RX2 (R: Terra rara; X: Al, Ni), incluindo a reorientação de spin (RS), usando um hamiltoniano modelo que consiste de momentos magnéticos localizados interagentes via interações de troca e de campo cristalino, na aproximação do campo molecular. Estudamos como a RS depende da direção de aplicação do campo magnético, da sua intensidade e da temperatura. Para os cálculos magnéticos, o problema da auto consistência foi solucionado utilizando uma rotina, computacional desenvolvida na linguagem computacional Fortran 90. Ressaltamos que, uma atenção especial foi direcionada ao campo cristalino, por conta da sua alta relevância sobre as características anisotrópicas dos compostos RX2 estudados. Portanto, em nossas tentativas para estudar as peculiaridades dos elementos terras raras, devido aos efeitos do campo cristalino, não consideramos somente a mudança na intensidade, mas a variação na direção do campo aplicado. No caso dos compostos Er+3 e Tb+3, obteve-se um comportamento da magnetização de segunda ordem ou contínuo face à mudança do ângulo polar. Salientamos que os termos de campo cristalino desempenham um papel fundamental na reorientação de spin de primeira ordem para Dy+3 e Ho+3. Primeiro, tal transição pode ser revelada por uma descontinuidade nas componentes cartesianas do vetor de magnetização em função do ângulo polar. Segundo, a descontinuidade é de grande importância para o cálculo do calor latente associado à reorientação spin nos casos em que foram observadas as transições de primeira ordem. Finalmente, foi possível separar as contribuições de primeira e segunda ordem da variação de entropia magnética anisotrópica, o qual é o principal resultado deste trabalho.
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Krzelowski, Mirosław. "Analiza struktury faz Laves'a Nb (Cu, Al, X) 2 (X = Ni, Co, Cr, Ti i Zr) metodą krystalografii elektronowej." Doctoral thesis, Katowice : Uniwersytet Śląski, 2008. http://hdl.handle.net/20.500.12128/5130.

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Aktualnie prowadzone badania w różnych ośrodkach naukowych związane z poszukiwaniem coraz to bardziej wytrzymałych i odpornych na degradację termiczną materiałów wskazują jednoznacznie, że jednym z właściwych kierunków badań jest zainteresowanie się materiałami, których struktura zawiera fazy międzymetaliczne. Fazami takimi są ponad wszelką wątpliwość fazy Laves’a, które stwarzają dodatkowe możliwości znacznej poprawy różnych charakterystyk tych materiałów, nie powodując jednocześnie pogorszenia innych pożądanych właściwości. Przykładem są tu stopy typu Cu-Al-Nb wykazujące pamięć kształtu w podwyższonych temperaturach. Obecność w tych stopach wydzieleń fazy Laves’a typu Nb(Cu,Al)2 powoduje równoczesny wzrost właściwości wytrzymałościowych i plastycznych. Wprowadzenie do tych stopów czwartego pierwiastka stopowego prowadzi do dalszych zmian, jednakże nie zawsze korzystnych. Spowodowane to jest pojawieniem niewielkiej ilości innych faz międzymetalicznych jak również zmianami w składzie chemicznym, strukturze i właściwościach samej fazy Laves’a (Nb(Cu,Al,X)2, gdzie X - czwarty pierwiastek stopowy). Ze względu na rozmiary tych wydzieleń, badanie zmian ich struktury prowadzone jest głównie przy pomocy transmisyjnej mikroskopii elektronowej. Celem pracy jest zbadanie wpływu składu chemicznego na strukturę fazy Laves’a typu Nb(Cu,Al,X)2, gdzie (X = Ni, Co, Cr, Ti lub Zr), wykorzystując głównie metodę krystalografii elektronowej.
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Perricone, Aurélie. "Synthèses, structures cristallines et propriétés magnétiques de nouveaux composés intermétalliques dans le système binaire U-Ni et les systèmes ternaires U-Ni-X (X ; Ge, Si, Al)." Rennes 1, 2002. http://www.theses.fr/2002REN10024.

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Ce mémoire relate les études structurales et les mesures magnétiques effectuées sur les binaires U-Ni et les ternaires des systèmes U-Ni-X (X:Ge,Si,Al). L'étude complète de ces diagrammes de phases a permis de caractériser 6 binaires dans U-Ni:U6Ni(type U6Mn)-UNi2(type MgZn2)-UNi5(type AuBe5)-U10Ni13-U11Ni16 et U1+xNi5-x(type CaCu5),6 ternaires dans U-Ni-Ge:UNi0,45Ge2(type CeNiSi2)-UNi5Ge3(type YNi5Si3)-U3Ni6Ge2(type Ag8Ca3)-U3Ni12-xGe4+y(type Gd3Ru4Al12)-UNi4,2Ge0,8(type CaCu5)-UNi1-xGe1+x;9 dans U-Ni-Si:UNi2,2Si3,3(type Ca2Cu6P5)-U2Ni2Si6,3(type V5B6)-U3Ni11,7Si4(type Gd3Ru4+yAl12-x)-UNi4,5Si0,5(type CaCu5)-U2Ni10,30Si2,64(type Th2Zn17)-U2Ni14,7Si7,3-UNi6,6Si5,7-U2Ni15,9Si6,4 et UNi10Si2;et 5 dans U-Ni-Al:U6Ni12Al5-UNi2+xAl3-x(type CaCu5)-UNi4+xAl2-x(type YMo2Al4)-UNi4,55Al0,45(type CaCu5) et U4Ni11Al2. Parmi ces composés, 9 cristallisent dans une structure inédite:U10Ni13-U11Ni16-UNi1-xGe1+x(0,33
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Verelst, Marc. "Elaboration et caracterisation de composites a matrice metallique ni/al#2o#3 et ni/cr#2o#3 par codeposition electrochimique. Application a l'electroformage de spheres creuses." Toulouse 3, 1991. http://www.theses.fr/1991TOU30111.

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Ce travail concerne l'elaboration par electroformage de spheres creuses a hautes caracteristiques thermomecaniques destinees a la realisation d'un nouveau materiau composite obtenu par brasage des spheres suivant une structure ordonnee. Notre choix s'est porte sur la synthese par codeposition electrochimique de materiaux composites a matrice metallique (m. M. C. ) a base de nickel renforce par de l'alumine ou du sesquioxyde de chrome. Dans une premiere partie de nos travaux, nous synthetisons des poudres submicroniques de ces deux oxydes dispersables en solution aqueuse. Nous presentons ensuite une etude systematique de l'influence des parametres electrochimiques sur la codeposition en courant continu. Afin d'accroitre la proportion de particules codeposees nous avons utilise un plan d'experiences simplex applique a la codeposition par courants pulses. La fraction volumique d'alumine codepose a pu etre accrue de 45% par rapport au courant continu. Une autre technique a consiste a doper en surface l'alumine par du sesquioxyde cr#2o#3 et par de l'oxyde de nickel nio. La progression est significative; la fraction volumique codeposee evolue de 2,4 a 3 et 3,4%. Les composites sont ensuite caracterises d'un point de vue microstructural et thermomecanique. Ces materiaux presentent avant et apres traitement thermique des proprietes tres superieures au nickel pur. Nous montrons que le mode de renforcement est imputable a des effets complexes et conjugues de plusieurs processus elementaires
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Giebel, Dawid. "Kompleksowa analiza widm czasów życia pozytonów oraz jej zastosowanie do badania struktury defektowej stopów z układu Fe-Al i Fe-Al-X (gdzie X=Cr, Ni)." Doctoral thesis, Katowice : Uniwersytet Śląski, 2012. http://hdl.handle.net/20.500.12128/5375.

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Cele niniejszej pracy obejmują dwa główne zagadnienia: Zaprojektowanie i wykonanie nowej wersji programu komputerowego z serii LT (LT 10), służącego do analizy widm czasów życia pozytonów oraz zastosowanie tego programu do badania struktury defektowej stopów z układu Fe- Al i Fe-Al-X (X=Cr, Ni). Nowa wersja programu powinna charakteryzować się nowoczesną formą, dostosowaną do współczesnych systemów operacyjnych komputerów oraz uwzględnić, rozwinąć i zebrać w jedną całość wszystkie sposoby analizy widm, wprowadzone w poprzednich wersjach LT, takie jak możliwość jednoczesnej analizy wielu widm za pomocą wybranych modeli teoretycznych czy możliwość korelowania określonych parametrów widm poprzez nakładanie różnych typów więzów. Chociaż stworzenie nowego programu komputerowego jest autonomicznym zadaniem, w tym szczególnym przypadku posłużył on do realizacji drugiego celu pracy, polegającego na uzyskiwaniu oryginalnych wyników dotyczących struktury defektowej badanych stopów, trudnych czy wręcz niemożliwych do otrzymania przy zastosowaniu dotychczas istniejącego oprogramowania. Praca jest podzielona na trzy zasadnicze części: część teoretyczną, obejmującą przegląd literaturowy zagadnień związanych z badanymi w tej pracy materiałami oraz z omówieniem metod wyznaczania struktury defektowej materiałów, ze szczególnym uwzględnieniem metod pozytonowych, część metodologiczną, poświęconą zagadnieniom związanym z analizą widm czasów życia pozytonów i ich realizacją za pomocą programu LT 10, część eksperymentalną,dotyczącą opisu badań eksperymentalnych stopów z układu Fe-Al i Fe-Al-X, wyników tych badań i ich dyskusji .
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Carrier, Xavier. "Phenomenes a l'interface oxyde/solution aqueuse lors de la preparation de catalyseurs supportes : apports de la geochimie application a la preparation de catalyseurs moo x/al 2o 3 et wo x/al 2o 3." Paris 6, 1998. http://www.theses.fr/1998PA066437.

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Ce travail vise a demonter le role de reactif que peut jouer le support oxyde lors de la synthese de catalyseurs heterogenes. Le support est generalement considere comme inerte chimiquement au cours des premieres etapes de preparation d'un catalyseur, et on considere que son role se limite a disperser la phase active. Nous montrons i) qu'il est necessaire de prendre en compte la reactivite du support oxyde et ii) que cette prise en compte beneficie des concepts et methodes etablis en geochimie. Ainsi, nous montrons que l'alumine n'est pas thermodynamiquement stable en solution. Sa mise en suspension conduit a la formation d'un hydroxyde al(oh) 3 par un mecanisme de dissolution/precipitation. La formation de cette phase est inhibee par la presence d'anions (moo 2 4, wo 2 4) en solution. En presence de cations (pt(nh 3) 2 + 4), cette formation depend de la methode de preparation. Cette phase influence le comportement du catalyseur final puisqu'elle controle la quantite d'hydrogene spillover formee pendant la reduction. Dans le cas de la preparation de catalyseurs moo x/al 2o 3 par adsorption a l'equilibre, nous montrons qu'il se forme en solution un heteropolyanion al(oh) 6mo 6o 3 1 8 par simple mise en contact d'une suspension d'alumine et d'une solution d'heptamolybdate et que cette espece est deposee en surface du support. La formation de ce compose mixte augmente thermodynamiquement la solubilite du support. Dans le cas d'une preparation par impregnation a sec, ce compose mixte precipite sous forme d'un sel en surface du support ce qui conduit, apres calcination, a la formation d'oxyde moo 3. La formation de ce sel est evitee en lyophilisant le catalyseur ce qui limite la dissolution du support et inhibe la formation ulterieure d'oxyde. Ces conclusions sont etendues a la preparation de catalyseurs wo x/al 2o 3 ou l'on met en evidence la formation d'aluminotungstates en solution et leur depot en surface du support.
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Books on the topic "(Ni)3(Al,X)"

1

Wenhua, Zhu. Creep of Ni[inferior 3]Al single crystals. Birmingham: University of Birmingham, 1997.

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Muʻjizat al-ʻaṣr: Muʻādalatā al-tartīb al-Qurʼānī, 19 x 6 = 114, 19 x 3 = 57. ʻAmmān: al-Jinān, 2006.

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Suryanto. Radiation damage of the intermetallic compound Ni [inferior] 3 Al. Birmingham: University of Birmingham, 1991.

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Yu, Huafeng. Plastic deformation and dislocation structures in Ni [inferior] 3 Al. Birmingham: University of Birmingham, 1991.

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Beijing chuang xin xue hui, ed. Bei da zhuang yuan jiao ni ying dui 3+X gao kao: Beida zhuangyuan jiaoni yingdui 3+X gaokao. Beijing: Zhongguo fu nü chu ban she, 2003.

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L, Lukas H., and United States. National Aeronautics and Space Administration., eds. A calormetric determination of the enthalpy of formation and a description of the defect structure of the ordered beta-phase /Ni, Cu//1-x/ Al/x. Washington, DC: National Aeronautics and Space Administration, 1988.

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Spain) Symposion de Teología Histórica (10th 1999 Valencia. Teología en Valencia: raíces y retos: Buscando nuestros orígenes, de cara al futuro : actas del X Simposio de Teología Histórica (3-5, marzo 1999). Valencia: Fac. de Teología "San Vicente Ferrer". Serv. de Informática, 2000.

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Schilling, Govert. Caccia al Pianeta X. Milano: Springer Milan, 2011. http://dx.doi.org/10.1007/978-88-470-1661-3.

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Sepowski, Stephen J., ed. The Ultimate Hint Book. Old Saybrook, CT: The Ultimate Game Club Ltd., 1991.

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Inc, Game Counselor. Game Counselor's Answer Book for Nintendo Players. Redmond, USA: Microsoft Pr, 1991.

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Book chapters on the topic "(Ni)3(Al,X)"

1

Goto, Tokimasa, Hiroyuki Tabata, and Yukio Hirose. "X-Ray Stress Measurement of Ni-Al System Intermetallic Compounds." In Advances in X-Ray Analysis, 243–49. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5377-9_27.

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Izumi, Takeshi, and Brian Gleeson. "Oxidation Behavior of Pt+Hf-Modified γ-Ni +γ'-Ni3Al Alloys." In High-Temperature Oxidation and Corrosion 2005, 221–28. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-409-x.221.

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Starostenkov, Mikhail D., Nikolay Medvedev, and Olga Pozhidaeva. "Aggregatization of Frenckel Defects in Ni and Intermetallide Ni3Al." In Materials Science Forum, 165–68. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-469-3.165.

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Ergin, Nuri, Gokhan Yoruk, and Ozkan Ozdemir. "Production of $$\mathrm{Ni}_{3}$$ Ni 3 Al and $$\mathrm{Ti}_{3}$$ Ti 3 Al Based Coating by Using Pressure Assisted Combustion Synthesis." In International Multidisciplinary Microscopy Congress, 27–32. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04639-6_4.

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Garimella, N., M. P. Brady, and Yong Ho Sohn. "Interdiffusion in (fcc) Ni-Cr-X (X = Al, Si, Ge or Pd) Alloys at 700°C." In Diffusion in Advanced Materials and Processing, 191–98. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-45-0.191.

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Stokłosa, Andrzej, and Stefan S. Kurek. "Aluminium-Doped Magnetite – (Fe1−x Al x )3−δO4." In Structure and Concentration of Point Defects in Selected Spinels and Simple Oxides, 109–15. First edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2021. http://dx.doi.org/10.1201/9781003106166-7.

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Wang, Hui, Qiu Liang Wang, Zhong Ming Ren, and Lu Guang Yan. "Magnetically Aligned Al3Ni Phase in Al-Ni Alloys Solidified with a High Magnetic Field." In Materials Science Forum, 1055–59. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.1055.

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Zuo, Kai Hui, Dong Liang Jiang, Qing Ling Lin, Yu Ping Zeng, and Zhong Ming Chen. "Mechanical Properties of (Al2O3+Ni) and (Al2O3+Ni)/Ni Laminated Materials." In Key Engineering Materials, 1447–50. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-456-1.1447.

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Yaar, I., I. Halevy, S. Kahane, A. Beck, and Z. Berant. "Electronic properties of Hf2X intermetallic compounds (X =Al, Si, Ni, Ga and Ge)." In HFI/NQI 2007, 33–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85320-6_5.

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Mallick, Sanjoy, Md Sharear Kabir, and Ahmed Sharif. "Development of Zn-Al-x Ni Lead-Free Solders for High-Temperature Applications." In Harsh Environment Electronics, 115–33. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2019. http://dx.doi.org/10.1002/9783527813964.ch5.

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Conference papers on the topic "(Ni)3(Al,X)"

1

Wang, Tao, Melford Sorrell, Kevin W. Kelly, and Evan Ma. "Ni-Al 2 O 3 and Ni-Al composite high-aspect-ratio microstructures." In Micromachining and Microfabrication, edited by Craig R. Friedrich and Yuli Vladimirsky. SPIE, 1998. http://dx.doi.org/10.1117/12.324077.

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Jung, S. H., S. Y. Lee, H. Y. Lee, Y. H. Yu, and K. H. Ko. "Alloying of Cold-Sprayed Al-Ti, Al-Ni Composite Films." In ITSC2005, edited by E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2005. http://dx.doi.org/10.31399/asm.cp.itsc2005p0216.

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Abstract The Al-Ti, Al-Ni mixed powders were successfully coated by cold gas dynamic spray process (CDSP) and alloying behaviors of films after post-annealing were investigated. The particles were accelerated through a standard de Laval type of nozzle with 120psi (prior to enter). Instead of conventional He gas, the air was used as particle carrying gas. The as-purchased power size of Al, Ti, Ni, was 77, 44, and 3, respectively. The composition of Ti and Ni was varied from 10 and 30 wt%. The coated films were annealed at 600~630. in air or N2 atmosphere for 3 hrs. It was observed that Ni and Ti particles were finely dispersed and imbedded densely in Al matrix. After post annealing of Al-Ti and Al-Ni films, alloy phases such as the Al3Ti and Al3Ni phase were formed in the films. In case of Al-Ni films after annealing in air, the oxidation process seemed to retard the alloying of Al3Ni. However, after annealing in N2, the limitless alloying was proceeded until Ni particles were all consumed. In case of Al-Ti films, it was found that oxidation were virtually nonexistent even in air atmosphere. The formation of Al3Ti seemed to be limited by Al or Ti diffusion via preformed Al3Ti phase encapsulating Ti powder. In bond strength test, Al-Ti and Al- Ni composite films have higher adhesive bond strength up to 2~ 3 times more than pure Al coating due to massive crater formation of hard Ni or Ti particles. In conclusion, CDSP of Al-metal composite powder source can be a practical and economical way to prepare hard and adhesive Al-alloy thick films owing to stable and finely dispersed inter metallic compound formed in low Temperature annealing. Abstract only; no full-text paper available.
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Jennings, C. A., C. A. Coverdale, D. J. Ampleford, S. B. Hansen, B. Jones, E. P. Yu, M. E. Cuneo, P. D. LePell, J. P. Chittenden, and Y. Maron. "3-dimensional modeling of nested Al and Ni-clad Ti on Al wire array Z pinches." In 2011 IEEE 38th International Conference on Plasma Sciences (ICOPS). IEEE, 2011. http://dx.doi.org/10.1109/plasma.2011.5992970.

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Kang, Yoo Su, Woong Ki Jang, Young Ho Seo, and Byeong Kim. "Optical Properties of Al2O3-Ni-Al Nano-Composite Films." In The 7th World Congress on Recent Advances in Nanotechnology. Avestia Publishing, 2022. http://dx.doi.org/10.11159/icnnfc22.104.

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Noda, Kazuhiko, Keita Miyahara, Yoshimi Watanabe, Glaucio H. Paulino, Marek-Jerzy Pindera, Robert H. Dodds, Fernando A. Rochinha, Eshan Dave, and Linfeng Chen. "Corrosion Behavior of Al-Al[sub 3]Ni and Al-Al[sub 2]Cu Functionally Graded Materials Fabricated by a Centrifugal Method." In MULTISCALE AND FUNCTIONALLY GRADED MATERIALS 2006. AIP, 2008. http://dx.doi.org/10.1063/1.2896842.

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Zhang, Li, Di Wang, Xian-Jin Liao, Xiao-Tao Luo, and Chang-Jiu Li. "The Influence of Diamond Addition to Ni-Al Powder on Oxidation Behavior of Ni-Al During Plasma Spraying for High Performance Oxide-Free Ni-Al Intermetallic Coating." In ITSC2021, edited by F. Azarmi, X. Chen, J. Cizek, C. Cojocaru, B. Jodoin, H. Koivuluoto, Y. C. Lau, et al. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.itsc2021p0447.

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Abstract Ni-Al intermetallics have excellent corrosion and oxidation resistance, but their use in thermal spraying has been limited due to issues with in-flight oxidation. In this study, a novel approach is proposed to remove oxide from Ni-Al droplets in-flight by adding a deoxidizer (diamond) to the feedstock powder. A mixture of nickel, aluminum, and diamond powders was mechanically alloyed using a combination of cryogenic and planetary ball milling. The resulting Ni/Al/diamond composite powder was then plasma sprayed via the APS process, forming Ni-Al coatings on Inconel 738 substrates. Phase composition, microstructure, porosity, and microhardness of the coatings were characterized by X-ray diffraction, scanning electron microscopy, image analysis, and hardness testing, respectively. Oxygen content measurements showed that the coatings contained significantly less oxygen than coatings made from ordinary Ni/Al powders. In-flight particle temperatures were also measured and found to be higher than 2300 °C. The low oxygen content in the coatings is attributed to the in-situ deoxidizing effect of ultrahigh temperature droplets which are also oxide-free.
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Kwon, Hoki, Bong Koo Kim, Gyong Geun Park, Sung Woo Kim, Jaewan Choi, Jeong Soo Lee, and Weon G. Jeong. "Ohmic characteristics of Pt and Ni/Au on Mg-doped Al x Ga 1-x N." In Asia-Pacific Optical Communications, edited by Chang-Hee Hong, Tsunemasa Taguchi, Jung Han, and Lianghui Chen. SPIE, 2006. http://dx.doi.org/10.1117/12.689268.

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Smith, Grant, Scott Bardenhagen, and John Nairn. "Mesoscale Modeling of Al/Ni Composites." In 2019 15th Hypervelocity Impact Symposium. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/hvis2019-091.

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Abstract Granular composite formulations involving metal/metal [1,2] (intermetallic) reactions have been investigated for a number of applications. Interfaces between metallic particles have been attributed particular importance due to their ability to form localized hotspots, where the local temperature of the granular composite may significantly exceed the global temperature, leading to a localized reaction initiation that may initiate a global reaction.3 Understanding of the response of metal/metal granular composites to mechanical loading can be greatly facilitated by mesoscale modeling in which the underlying composite structure of the components is clearly resolved. For the Al/Ni composite discussed in this study, this involves explicitly resolving Al and Ni particles and intermetallic (Al/Al, Ni/Ni and Al/Ni) interfaces. In this work we utilize an idealized but realistic model for an Al/Ni composite using EOS, constitutive and interfacial models informed by molecular dynamics (MD) simulations. The Al/Ni microstructures are subjected to uniaxial compressive loading up to 30 GPa, shock loading up to 70 GPa (2000 m/s) and impact loading at 2000 m/s, and the mechanical and thermal response of the composite are analyzed.
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9

Copland, E. "Formation of γ'-Ni3Al via the Peritectiod Reaction: γ + � (+ Al2O3) = γ' (+ Al2O3)." In Superalloys. TMS, 2008. http://dx.doi.org/10.7449/2008/superalloys_2008_671_679.

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Samuelsson, E., P. W. Keefe, and R. W. Furgason. "Evaluation of the Ni3Al Base Alloys IC221 and IC218LZr." In Superalloys. TMS, 1992. http://dx.doi.org/10.7449/1992/superalloys_1992_361_370.

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Reports on the topic "(Ni)3(Al,X)"

1

Sikka, V. K., S. Viswanathan, and M. L. Santella. Ni{sub 3}Al technology transfer. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/494110.

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Liu, C. T. Ni{sub 3}Al aluminide alloys. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10191071.

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Sikka, V. K., M. L. Santella, and D. J. Alexander. Ni{sub 3}Al technology transfer. Office of Scientific and Technical Information (OSTI), May 1995. http://dx.doi.org/10.2172/105113.

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Bonnet, R., M. Loubradou, U. Dahmen, and S. Hinderberger. Misfit dislocations associated with ultrathin twins along a Ni{sub 3}Al/Ni{sub 3}Nb interface. Office of Scientific and Technical Information (OSTI), May 1995. http://dx.doi.org/10.2172/195696.

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Choudhury, A. The intergranular segregation of boron in substoichiometric Ni/sub 3/Al. Office of Scientific and Technical Information (OSTI), December 1987. http://dx.doi.org/10.2172/5683643.

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Sikka, V. K., and R. E. Dailey. Use of Ni{sub 3}Al-based alloys for walking-beam furnaces. Office of Scientific and Technical Information (OSTI), February 1996. http://dx.doi.org/10.2172/392810.

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Chou, Y. T. Grain boundary diffusion in oriented Ni sub 3 Al bicrystals containing boron. Office of Scientific and Technical Information (OSTI), December 1990. http://dx.doi.org/10.2172/5879343.

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Liu, C. T., V. K. Sikka, J. A. Horton, and E. H. Lee. Alloy development and mechanical properties of nickel aluminide (Ni sub 3 Al) alloys. Office of Scientific and Technical Information (OSTI), August 1988. http://dx.doi.org/10.2172/7021947.

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Disselkamp, Robert, John R. Edwards, Daniel Pilson, Tyrrel W. Smith, and Jr. Laboratory Studies of Al(2)O(3)-NO(x) Aerosols. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada414405.

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Grummon, D. S., and G. Gottstein. Softening mechanisms and microstructural instabilities during high temperature, low cycle fatigue of Ni, Ni sub 3 Al and their metal matrix composites. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/5050198.

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