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Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

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Статті в журналах з теми "030204 Main Group Metal Chemistry"

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Craig, Peter, and Marcel Gielen. "Editorial: main group metal compounds." Applied Organometallic Chemistry 17, no. 1 (January 2003): 1. http://dx.doi.org/10.1002/aoc.405.

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2

Budzelaar, Peter H. M., Jeroen J. Engelberts, and Joop H. van Lenthe. "Trends in Cyclopentadienyl−Main-Group-Metal Bonding†." Organometallics 22, no. 8 (April 2003): 1562–76. http://dx.doi.org/10.1021/om020928v.

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3

Himmel, Hans-Joerg. "ChemInform Abstract: Main Group Chemistry: Metal-reinforced Bonding." ChemInform 44, no. 19 (April 18, 2013): no. http://dx.doi.org/10.1002/chin.201319233.

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4

Gečiauskaitė, Agota A., and Felipe García. "Main group mechanochemistry." Beilstein Journal of Organic Chemistry 13 (October 5, 2017): 2068–77. http://dx.doi.org/10.3762/bjoc.13.204.

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Over the past decade, mechanochemistry has emerged as a powerful methodology in the search for sustainable alternatives to conventional solvent-based synthetic routes. Mechanochemistry has already been successfully applied to the synthesis of active pharmaceutical ingredients (APIs), organic compounds, metal oxides, coordination compounds and organometallic complexes. In the main group arena, examples of synthetic mechanochemical methodologies, whilst still relatively sporadic, are on the rise. This short review provides an overview of recent advances and achievements in this area that further validate mechanochemistry as a credible alternative to solution-based methods for the synthesis of main group compounds and frameworks.
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5

Silvestru, Cristian, and John E. Drake. "Tetraorganodichalcogenoimidodiphosphorus acids and their main group metal derivatives." Coordination Chemistry Reviews 223, no. 1 (December 2001): 117–216. http://dx.doi.org/10.1016/s0010-8545(01)00387-3.

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Chirila, Andrei, Robert Wolf, J. Chris Slootweg, and Koop Lammertsma. "Main group and transition metal-mediated phosphaalkyne oligomerizations." Coordination Chemistry Reviews 270-271 (July 2014): 57–74. http://dx.doi.org/10.1016/j.ccr.2013.10.005.

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Elsen, Holger, Christian Fischer, Christian Knüpfer, Ana Escalona, and Sjoerd Harder. "Early Main Group Metal Catalysts for Imine Hydrosilylation." Chemistry – A European Journal 25, no. 70 (November 18, 2019): 16141–47. http://dx.doi.org/10.1002/chem.201904148.

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8

Tang, Chuan-Kai, Ya-Zhou Li, Fang Ma, Zexing Cao, and Yirong Mo. "Anti-Electrostatic Main Group Metal–Metal Bonds That Activate CO2." Journal of Physical Chemistry Letters 12, no. 31 (August 4, 2021): 7545–52. http://dx.doi.org/10.1021/acs.jpclett.1c02134.

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9

Lampland, Nicole L., Aradhana Pindwal, KaKing Yan, Arkady Ellern, and Aaron D. Sadow. "Rare Earth and Main Group Metal Poly(hydrosilyl) Compounds." Organometallics 36, no. 23 (July 24, 2017): 4546–57. http://dx.doi.org/10.1021/acs.organomet.7b00383.

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Kuhn, Norbert, and Martin Speis. "Mg(C7H13N2)2 - a main group metal vinamidine complex." Inorganica Chimica Acta 145, no. 1 (May 1988): 5. http://dx.doi.org/10.1016/s0020-1693(00)81995-7.

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Дисертації з теми "030204 Main Group Metal Chemistry"

1

Davies, Aaron James. "Aspects of main group metal amido and carbene chemistry." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/55408/.

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Roe, Stephen Mark. "Structural studies of main group metal carboxylates and dithiocarbamates." Thesis, University of Warwick, 1989. http://wrap.warwick.ac.uk/56212/.

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Анотація:
The work contained in this thesis describes the crystal structures of a number of tin(IV) and tellurium(IV) carboxylates and dithiocarbamates. The results show the regularity at which these types of compounds form secondary bonds (weak interactions), and the effect of the lone pair of tellurium(IV) on the geometries formed. The area has been studied through the determination of the following crystal structures: i) monocarboxylates: Ph3SnOCOCH2Cl, Ph3SnOCOCHCh, Ph3SnOCOCCh.MeOH. Ph3SnOCOCCh and Ph3TeOCOCCh. ii) dicarboxulates : Ph2Sn(OCOCH3)2, Ph2Sn(OCOCH2CI)2 and Ph2Te(OCOCCI3)2 iii) dithiocarbamates : Ph2Te(S2CNEt2)2, Ph2Te(S2CN(Et)(Ph))2 and Ph2Te(S2CNPh2)2 In addition to these, six hydrolysis products of Ph3SnOCOCCh are reponed. These com- pounds show the varied results that are obtained from the facile dearylation of the organotin com- pound by a strong organic acid in the presence of water. The following structures are reported: Ph2 Sn(OH)(OCOCCh), {[Pb2Sn(OCOCCh)hOh (two isomers), [(PbSn))(Oh(OCOCCh)sh, [PhSn(O)(OCOCCh)]6 and [(Ph 2 Sn)2(OH)(OCOCCh)3h.
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Nguyen, Tu Ngoc. "Electrosynthesis and characterization of main group and transition metal oxides." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11949.

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Campbell, Ross. "Alkali metal mediated bimetallic main group and transition organometallic chemistry." Thesis, University of Strathclyde, 2012. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=16944.

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Giaquinta, Daniel M. (Daniel Mark). "Synthesis and characterization of new layered main group-transition metal oxides." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/17344.

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Genge, Anthony Richard John. "Mono- and bi-dentate group 15 and 16 ligand complexes of main group metal halides." Thesis, University of Southampton, 1999. https://eprints.soton.ac.uk/393598/.

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Harris, Neil. "A matrix isolation study of main group and transition metal atom cryochemistry." Thesis, University of Hull, 2001. http://hydra.hull.ac.uk/resources/hull:12359.

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Анотація:
The majority of the work described in this thesis is concerned with the isolation of transition metal and main group atoms in dilute reactive ligand matrices. The previously uncharacterised matrix isolated species were characterised using IR, UV-Vis-NIR and XAFS spectroscopic techniques. Various metal atom sources were investigated for the production and subsequent isolation of atomic species in both inert and reactive ligand matrices. Some 4d and 5d transition metals atoms were produced from a hollow cathode sputtering source (laser ablation was also employed as an atom source in some of the work) and isolated in argon matrices. The isolation of both platinum and palladium atoms in chlorine containing argon matrices has been shown to result in the formation of linear PtCl₂ and PdCl₂ molecules. The isolation of gold atoms has led to the formation of a monomeric chloride, suspected to be either AuCl3 or AuCI₂.The structure of the silver chloride remains undetennined. The pseudo-gas phase structure of these monomeric species is presented for the first time. In addition to this work tellurium atoms have been generated from the photodecomposition of matrix isolated H₂Te. The use of CO containing matrices has led to the isolation and characterisation of carbonyl telluride, OCTe, the structure and composition of which (either in the solid or gas phase) is presented for the first time. In complementary work, an investigation into carbonyl complexes formed on isolation of some 3d transition metal bromides in dilute carbon monoxide / argon matrices is also presented, together with their photochemistry in neat CO matrices.
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Cibuzar, Michael. "Metal Catalyzed Group 14 And 15 Bond Forming Reactions: Heterodehydrocoupling And Hydrophosphination." ScholarWorks @ UVM, 2019. https://scholarworks.uvm.edu/graddis/1023.

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Investigation of catalytic main-group bond forming reactions is the basis of this dissertation. Coupling of group 14 and 15 elements by several different methods has been achieved. The influence of Si–N heterodehydrocoupling on the promotion of α-silylene elimination was realized. Efficient Si–N heterodehydrocoupling by a simple, earth abundant lanthanide catalyst was demonstrated. Significant advances in hydrophosphination by commercially available catalysts was achieved by photo-activation of a precious metal catalyst. Exploration of (N3N)ZrNMe2 (N3N = N(CH2CH2NSiMe3)33–) as a catalyst for the cross-dehydrocoupling or heterodehydrocoupling of silanes and amines suggested silylene reactivity. Further studies of the catalysis and stoichiometric modeling reactions hint at α-silylene elimination as the pivotal mechanistic step, which expands the 3p elements known to engage in this catalysis and provides a new strategy for the catalytic generation of low-valent fragments. In addition, silane dehydrocoupling by group 1 and 2 metal bis(trimethylsilyl)amide complexes was investigated. Catalytic silane redistribution was observed, which was previously unknown for d0 metal catalysts. La[N(SiMe3)2]3THF2 is an effective pre-catalyst for the heterodehydrocoupling of silanes and amines. Coupling of primary and secondary amines with aryl silanes was achieved with a loading of 0.8 mol % of La[N(SiMe3)2]3THF2. With primary amines, generation of tertiary and sometimes quaternary silamines was facile, often requiring only a few hours to reach completion, including new silamines Ph3Si(nPrNH) and Ph3Si(iPrNH). Secondary amines were also available for heterodehydrocoupling, though they generally required longer reaction times and, in some instances, higher reaction temperatures. By utilizing a diamine, dehydropolymerization was achieved. The resulting polymer was studied by MS and TGA. This work expands upon the utility of f-block complexes in heterodehydrocoupling catalysis. Stoichiometric and catalytic P–E bond forming reactions were explored with ruthenium complexes. Hydrophosphination of primary phosphines and activated alkenes was achieved with 0.1 mol % bis(cyclopentadienylruthenium dicarbonyl) dimer, [CpRu(CO)2]2. Photo-activation of [CpRu(CO)2]2 was achieved with a commercially available UV-A 9W lamp. Preliminary results indicate that secondary phosphines as well as internal alkynes may be viable substrates with this catalyst. Attempts to synthesize ruthenium phosphinidene complexes for stoichiometric P–E formation have been met with synthetic challenges. Ongoing efforts to synthesize a ruthenium phosphinidene are discussed. The work in this dissertation has expanded the utility of metal-catalyzed main-group bond forming reactions. A potential avenue for catalytic generation low-valent silicon fragments has been discovered. Rapid Si–N heterodehydrocoupling by an easily obtained catalyst has been demonstrated. Hydrophosphination with primary phosphines has been achieved with a commercially available photocatalyst catalyst, requiring only low intensity UV light.
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Sadler, Mark. "Main group selenium chemistry and a series of hydrophobic bispidone-transition metal complexes." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515118.

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This thesis encompasses two distinct areas of chemistry. The first part involves the synthesis and characterisation of phenylselenium(II) halides and pseudohalides and their further reactions with tertiary phosphines. The molecular structures of phenylselenium(II) chloride and thiocyanide are reported along with a large series of reactions involving phenylselenium(lI) chloride with tertiary phosphines. In addition to an extensive study of the products in solution using multinuclear NMR, suitable crystals were characterised using X-ray crystallography, yielding three novel crystal structures, two of which feature the rare [PhSeCI2] anion. The effect of doubling the starting quantity of phenylselenium(ll) chloride was noted to have the effect of encouraging more compounds containing the [R3PSePh] cation. The second part of the work incorporates the synthesis and characterisation of a series of hydrophobic bispidone - transition metal complexes. This study was the first example of bispidone ligands substituted with long alkyl chains and three novel crystal structures are reported. Their molecular configuration shows that each adopts the expected back-to-back double chair backbone as observed in similar studies by other chemists. Furthermore, the molecular structures of four piperidone precursor molecules were obtained, the first examples of piperidones substituted with hydrophobic alkyl chains. Their structures reveal that these molecules tautomerise in the solid state due to the formation of an intramolecular six-membered ring stabilised by hydrogen bonding.
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Berning, Douglas E. "New developments in main group and transition metal chemistry of water-soluble phospines /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9841266.

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Книги з теми "030204 Main Group Metal Chemistry"

1

Stone, F. Gordon A., and Robert West. Multiply bonded main group metals and metalloids. San Diego: Academic Press, 1996.

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2

International, Conference on the Organometallic and Coordination Chemistry of Germanium Tin and Lead (6th 1989 Brussels Belgium). Main group metal chemistry: Incorporating silicon, germanium, tin and lead compounds. London: Freund, 1989.

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3

Cluster chemistry: Introduction to the chemistry of transition metal and main group element molecular clusters. Berlin: Springer-Verlag, 1993.

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4

Editor), Robert West (Series, and Anthony F. Hill (Series Editor), eds. Multiply Bonded Main Group Metals and Metalloids, Volume 39 (Advances in Organometallic Chemistry). Academic Press, 1996.

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5

McKillop, A. Comprehensive Organometallic Chemistry II : Main-Group Metal Organometallics in Organic Synthesis (Comprehensive Organometallic Chemistry II). Pergamon, 1995.

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6

Comprehensive Organometallic Chemistry II : Main-Group Metal Organometallics in Organic Synthesis (Comprehensive Organometallic Chemistry II). Pergamon, 1995.

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7

Gonzalez-Moraga, Guillermo. Cluster Chemistry: Introduction to the Chemistry of Transition Metal and Main Group Element Molecular Clusters. Springer London, Limited, 2013.

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8

Gonzalez-Moraga, Guillermo. Cluster Chemistry: Introduction to the Chemistry of Transition Metal and Main Group Element Molecular Clusters. Springer, 2014.

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9

McKillop, A. Comprehensive Organometallic Chemistry II, Volume 11: Main-Group Metal Organometallics in Organic Synthesis. Elsevier Science & Technology Books, 2002.

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10

The Interface of Main Group and Transition Metal Cluster Chemistry (Journal of Coordination Chemistry - Section B). Gordon and Breach, 1988.

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Частини книг з теми "030204 Main Group Metal Chemistry"

1

Housecroft, Catherine E. "Transition Metal—Main Group Cluster Compounds." In Inorganometallic Chemistry, 73–178. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2459-9_3.

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2

González-Moraga, Guillermo. "Main Group-Transition Metal Mixed Clusters." In Cluster Chemistry, 177–201. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-85926-7_3.

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3

Grimes, Russell N. "Transition Metal-Promoted Reactions of Main Group Species and Main Group-Promoted Reactions of Transition Metal Species." In Inorganometallic Chemistry, 253–88. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2459-9_6.

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4

Dechter, James J. "NMR of Metal Nuclides. Part I. the Main Group Metals." In Progress in Inorganic Chemistry, 285–385. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166307.ch5.

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Wass, Duncan F., and Andy M. Chapman. "Frustrated Lewis Pairs Beyond the Main Group: Transition Metal-Containing Systems." In Topics in Current Chemistry, 261–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/128_2012_395.

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Powell, P. "Methods of formation of metal—carbon bonds of the main group elements." In Principles of Organometallic Chemistry, 15–28. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1197-0_2.

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7

Pathak, Biswarup, Muthaiah Umayal, and Eluvathingal D. Jemmis. "σ-Bond Prevents Short π-Bonds: A Detailed Theoretical Study on the Compounds of Main Group and Transition Metal Complexes." In Practical Aspects of Computational Chemistry, 165–81. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2687-3_7.

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8

Mallick, D., and E. D. Jemmis. "Main Group Metal Clusters." In Comprehensive Inorganic Chemistry II, 833–67. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-08-097774-4.00935-9.

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9

"Main Group Metal Coordination Chemistry." In Main Group Metal Coordination Polymers, 183–204. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119370772.ch9.

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Housecroft, Catherine E., and Edwin C. Constable. "Main group metal coordination chemistry." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-12-823144-9.00155-2.

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Тези доповідей конференцій з теми "030204 Main Group Metal Chemistry"

1

Petrie, Simon, and Robert C. Dunbar. "Main Group Metal Ion Chemistry In Planetary Atmospheres." In ASTROCHEMISTRY: From Laboratory Studies to Astronomical Observations. AIP, 2006. http://dx.doi.org/10.1063/1.2359565.

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2

Dunbar, Robert C., and Simon Petrie. "Main Group Metal Ion Chemistry in Cold Interstellar and Circumstellar Environments." In ASTROCHEMISTRY: From Laboratory Studies to Astronomical Observations. AIP, 2006. http://dx.doi.org/10.1063/1.2359566.

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3

Haldorsen, Lars M., Gisle Rørvik, Michael Dodge, and Kasra Sotoudeh. "Recent Experiences With Cracking of Load Bearing Dissimilar Metal Welds on Subsea Production Systems." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61176.

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Анотація:
The process piping on subsea production systems (SPS) is normally made of solid corrosion resistant alloys (CRAs). However, some process components are made of low alloyed steels (LASs) which are internally cladded with a CRA. These components require post weld heat treatment (PWHT) to improve the properties in the LAS heat affected zone (HAZ). In order to avoid PWHT during on-site welding to adjoining piping systems, it has been common to weld a buttering layer (e.g. 15 – 20mm long) on to the connecting end of the LAS. The buttering layer consumable has traditionally been an austenitic nickel alloy, Alloy 625/725. The LAS HAZ and the buttering layer are thereafter PWHT’d and machined prior to on-site welding to the adjoining piping system. By this, it is not necessary to perform PWHT on the on-site (e.g. tie-in or closure) dissimilar welds. In the beginning of the century, some operators experienced cracking along the fusion line interface between the nickel alloy buttering and the LAS. These problems were typically experienced during start-up or prior to first production. An extensive research programme was established in order to determine the causes and remedial actions. A group sponsored project led by TWI was performed to understand the failure mechanisms and essential parameters leading to hydrogen assisted cracking, (HAC) of dissimilar metal welds (DMWs). Recommendations were made related to LASs chemistry, welding parameters, bevel geometry and especially PWHT time and temperature. Based on these recommendations there have been only a few incidents with cracking of such welded combinations before 2013 and onwards. Since then Statoil has experienced four off incidents with cracking of dissimilar welds on subsea LAS components. Common for these incidents are that they have been in operation for about 15 years and the cracking happened during cold shut-down periods. This paper presents key observations made and lessons learnt from the incidents summarized above. The main focus has been on environmental fracture mechanics-based testing of samples charged with hydrogen by cathodic protection (CP). Variables have been pre-charging temperature and time, as well as testing temperature. The testing has revealed strong dependency between the operating temperature (i.e. shutdown versus operation) and the sensitivity to HAC. Further, the investigations have shown that the integrity of the coating, as an effective barrier to hydrogen ingress, is the main feature to prevent HAC on this kind of DMWs. The investigation of the four off cracked welds showed clearly that the insulating polyurethane (PU) coating was heavily degraded by hydrolysis at higher temperatures. This exposed the dissimilar weldments to CP which contributed to the hydrogen charging of the weldments. The paper gives also result that show that it is not only PWHT’d LAS (e.g. type 8630M, 4130 and F22M) with dissimilar welds that may suffer from this failure mechanism. Testing has shown that as-welded F65 steel /Alloy 59 combinations may also suffer when charged with hydrogen and tested at low temperatures (e.g. shut down temperature).
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Zhang, Guodong, Xuejun Bai, Douglas Stalheim, Shaopo Li, and Wenhua Ding. "Development and Production of Heavy Gauge X80 and High Strength X90 Pipeline Steels Utilizing TMCP/Optimized Cooling Process." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33265.

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Анотація:
Along with the increasing demand of oil and natural gas by various world economies, the operating pressure of the pipeline is also increasing. Large diameter heavy wall X80 pipeline steel is widely used in the long distance high pressure oil and gas transportation in China today. In addition, development of X90/X100 has begun in earnest to support the growing energy needs of China. With the wide use of X80 steels, the production technology of this grade has become technically mature in the industry. Shougang Group Qinhuangdao Shouqin Metal Materials Co., Ltd. (SQS) since 2008 has been steadily developing heavier thicknesses and wider plate widths over the years. This development has resulted in stable mass production of X80 pipeline steel plate in heavy wall thicknesses for larger pipe OD applications. The technical specifications of X80 heavy wall thickness and X90/X100 14.8–19.6 mm wall thicknesses, large OD (48″) requiring wide steel plates for the 3rd West-to-East Natural Gas Transmission Pipeline Project and the third line of Kazakhstan-China Main Gas Pipeline (The Middle Asia C Line) and the demonstration X90/X100 line (part of the 3rd West-East Project) in China required changes to the SQS plate mill process design. Considering the technology capability of steelmaking and the plate mill in SQS, a TMCP+OCP (Optimized Cooling Process) was developed to achieve stable X80 and X90/X100 mechanical properties in the steel plates while reducing alloy content. This paper will describe the chemistry, rolling process, microstructure and mechanical properties of X80 pipeline steel plates produced by SQS for 52,000 mT of for the 3rd West-to-East Natural Gas Transmission Pipeline Project and 5,000 mT for the Middle Asia C Line Project along with 1000 tons of 16.3 mm X90/X100 for the 3rd West-East demonstration pipeline. The importance of the slab reheating process and rolling schedule will be discussed in the paper. In addition, the per pass reductions logic used during recrystallized rough rolling, and special emphasis on the reduction of the final roughing pass prior to the intermediate holding (transfer bar) resulting in a fine uniform prior austenite microstructure will be discussed. The optimized cooling (two phase cooling) application after finish rolling guarantees the steady control of the final bainitic microstructure with optimum MA phase for both grades. The plates produced by this process achieved good surface quality, had excellent flatness and mechanical properties. The pipes were produced via the JCOE pipe production process and had favorable forming properties and good weldability. Plate mechanical properties successfully transferred into the required final pipe mechanical properties. The paper will show that the TMCP+OCP produced X80 heavy wall and 16.3 mm X90 wide plates completely meet the technical requirements of the three pipeline projects.
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