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Relevant bibliographies by topics / Micro-metallic components

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Dissertations / Theses
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Academic literature on the topic 'Micro-metallic components'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Micro-metallic components"

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Zhang, Wenwu, and Y. Lawrence Yao. "Micro Scale Laser Shock Processing of Metallic Components." Journal of Manufacturing Science and Engineering 124, no. 2 (April 29, 2002): 369–78. http://dx.doi.org/10.1115/1.1445149.

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Laser shock processing of copper using focused laser beam size about ten microns is investigated for its feasibility and capability to impart desirable residual stress distributions into the target material in order to improve the fatigue life of the material. Shock pressure and strain/stress are properly modeled to reflect the micro scale involved, and the high strain rate and ultrahigh pressure involved. Numerical solutions of the model are experimentally validated in terms of the geometry of the shock-generated plastic deformation on target material surfaces as well as the average in-depth strains under various conditions. The residual stress distributions can be further influenced by shocking at different locations with certain spacing. The potential of applying the technique to micro components, such as micro gears fabricated using MEMS is demonstrated. The investigation also lays groundwork for possible combination of the micro scale laser shock processing with laser micromachining processes to offset the undesirable residual stress often induced by such machining processes.

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SUZUKI, Hirofumi, Daisuke MUKOHATA, Takeshi KAWANO, Yuji YAMAMOTO, Keiichi NAKAMOTO, Toshiroh SHIBASAKA, and Toshimichi MORIWAKI. "3606 Precision Molding of Micro Metallic Glass Components." Proceedings of the JSME annual meeting 2007.4 (2007): 277–78. http://dx.doi.org/10.1299/jsmemecjo.2007.4.0_277.

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Kim, J. S., Kyle Jiang, C. Lucien Falticeanu, G. J. Davies, and I. T. H. Chang. "Making Alumina Microcomponents From Al Powder." Materials Science Forum 534-536 (January 2007): 1041–44. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1041.

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Alumina microcomponents have distinguishing advantages over Si counterparts. However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision components that require a high tolerance. A new fabrication process is presented to greatly reduce the shrinkage. The process consists of forming an Al powdered component through sintering and transforming the Al powdered component into an alumina part. In this way, the shrinkage occurring in sintering the Al powder component will be compensated by the expansion occurred when Al transforms into alumina. The process involves producing micro-moulds, preparing metallic paste, filling the micro-moulds with the metallic paste, demoulding, sintering the green Al patterns and finally oxidising the sintered Al-based components to achieve alumina components. The process was proven successful. Characterization of the sintered alumina microcomponents has been undertaken, including SEM image analysis, density and scale measurements.

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Liu, Jian, Hany Hassanin, Zhenyu Ni, Yi Yang, Gang Yang, and Kyle Jiang. "Production of high-precision micro metallic components by electroforming process." Materials and Manufacturing Processes 32, no. 12 (August 18, 2016): 1325–30. http://dx.doi.org/10.1080/10426914.2016.1221092.

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Essa, Khamis, Francesco Modica, Mohamed Imbaby, Mahmoud Ahmed El-Sayed, Amr ElShaer, Kyle Jiang, and Hany Hassanin. "Manufacturing of metallic micro-components using hybrid soft lithography and micro-electrical discharge machining." International Journal of Advanced Manufacturing Technology 91, no. 1-4 (November 22, 2016): 445–52. http://dx.doi.org/10.1007/s00170-016-9655-4.

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Zhang, Xiang, Jiang Ma, Ran Bai, Qian Li, Bing Li Sun, and Chang Yu Shen. "Polymer Micro Hot Embossing with Bulk Metallic Glass Mold Insert." Advanced Materials Research 510 (April 2012): 639–44. http://dx.doi.org/10.4028/www.scientific.net/amr.510.639.

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Polymer microstructures are used more and more in many fields. Hot embossing is one of molding processing to achieve micro polymer components. In this paper, bulk metallic glass was selected as mold material to fabricate mold insert of micro hot embossing. Traditional UV-lithography and ICP-etching were used to achieve micro features on silicon wafer. And then, micro features were transferred from silicon wafer to bulk metallic glass mold insert above its glass transition temperature. Finally, applied bulk metallic glass mold insert to replicate polymer microstructure with hot embossing. Three commonly used thermoplastic polymers: high-density polyethylene (HDPE), polypropylene (PP) and polycarbonate (PC) were selected in this study. Experiments show that microstructures can have a good replication from bulk metallic glass mold insert to the thermoplastic polymer using hot embossing.

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Ray, Debajyoti, Asit Baran Puri, and Nagahanumaiah. "Investigation on Cutting Forces and Surface Finish in Mechanical Micro Milling of Zr-Based Bulk Metallic Glass." Journal of Advanced Manufacturing Systems 18, no. 01 (February 13, 2019): 113–32. http://dx.doi.org/10.1142/s0219686719500069.

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Precision micro-component fabrication demands suitable manufacturing processes that ensure making of parts with good form and finish. Mechanical micro milling represents a flexible and powerful process that exhibits enhanced capability to create micro features. Bulk metallic glass (BMG) represents a young class of amorphous alloy material with superior mechanical and physical properties and finds appreciable micro scale applications like biomedical devices and implants, micro parts for sport items and various other micro- components. In the present work, an attempt has been made to analyze the influence of the cutting parameters like spindle speed, feed per tooth and axial depth of cut on the machinability of BMG, in mechanical micro-milling process. The micro-milling process performances have been evaluated concerning to cutting forces and surface roughness generated, by making full slots on the workpiece with solid carbide end mill cutters. The paper presents micro-machining results for bulk metallic glass machined with commercial micro-milling tool at low cutting velocity regime. Response surface methodology (RSM) has been employed for process modeling and subsequent analysis to study the influence of the combination of cutting parameters on responses within the selected domain of cutting parameters. It has been found that the effect of axial depth of cut on the cutting force components is remarkably significant. Cutting force components increases with the increase in axial depth of cut and decreases with increase in spindle speed. At low feed rate, cutting force in the feed direction (Fx, i.e., cutting force along x-direction) increases with a decrease in feed rate. This increase of force could be due to the possible ploughing effect. A similar pattern of variation has been observed with cutting force component in cross-feed direction (Fy) also. It has been found that effect of feed per tooth on the roughness parameter Ra is remarkably significant. Surface roughness increases with feed per tooth. Axial depth of cut does not contribute much to the surface roughness. Surface roughness decrease with the increase of spindle speed.

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Lee, Hye Jin, Nak Kyu Lee, and Hyoung Wook Lee. "A Study on the Micro Property Testing of Micro Embossing Patterned Metallic Thin Foil." Key Engineering Materials 345-346 (August 2007): 335–38. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.335.

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In this paper, Experimental results on the measurement of mechanical properties of fine patterns in the MEMS structure are described. The mechanical properties of embossing patterns on metallic thin foil is measured using the nano indentation system, that is developed by Korea Institute of Industrial Technology(KITECH). These micro embossing patterns are fabricated using CIP(Cold Isostatic Press) process on micro metallic thin foils(Al-1100) that are made by rolling process. These embossing patterned metallic thin foils(Al-1100) are used in the reflecting plate of BLU(Back Light Unit) and electrical/mechanical MEMS components. If these mechanical properties of fine patterns are utilized in a design procedure, the optimal design can be achieved in aspects of reliability as well as economy.

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Sundriyal, Sanjay, Vipin, and Ravinderjit Singh Walia. "Experimental Investigation of the Micro-hardness of EN-31 Die Steel in a Powder-Mixed Near-Dry Electric Discharge Machining Method." Strojniški vestnik – Journal of Mechanical Engineering 66, no. 3 (March 15, 2020): 184–92. http://dx.doi.org/10.5545/sv-jme.2019.6474.

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The Powder-Mixed Near-Dry Electric Discharge Machining (PMND-EDM) methodology has proven to be efficient in terms of machining rate, surface morphology, and environmental friendliness, unlike traditional EDM. In this study, the presence of a conductive metallic powder (zinc) in the dielectric medium was responsible for changing the topography of the workpiece (EN-31) and resulted in a higher micro-hardness value of the machined component. In this research, an approach has been made to optimize the significant process parameters by using a Taguchi L9 orthogonal array (OA) to obtain machined components with higher values of micro-hardness, which was measured in terms of Vickers hardness HV. The selected process parameters were tool diameter, mist flow rate, metallic powder concentration, and dielectric mist pressure. By introducing foreign particles (metallic powder), the topography of the machined products has been improved, and the micro-hardness value was found to be enhanced. The confirmation experiment was performed for optimal process parameter settings, and the enhanced microhardness value was found to be 506.63 HV in the machined EN-31 die steel.

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Li, J.-B., K. Jiang, and G. J. Davies. "Novel die-sinking micro-electro discharge machining process using microelectromechanical systems technology." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 220, no. 9 (September 1, 2006): 1481–87. http://dx.doi.org/10.1243/09544062jmes323ft.

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A novel die-sinking micro-electro discharge machining (EDM) process is presented for volume fabrication of metallic microcomponents. In the process, a high-precision silicon electrode is fabricated using deep reactive ion etching (DRIE) process of microelectromechanical systems (MEMS) technology and then coated with a thin layer of copper to increase the conductivity. The metalized Si electrode is used in the EDM process to manufacture metallic microcomponents by imprinting the electrode onto a flat metallic surface. The two main advantages of this process are that it enables the fabrication of metallic microdevices and reduces manufacturing cost and time. The development of the new EDM process is described. A silicon component was produced using the Surface Technology Systems plasma etcher and the DRIE process. Such components can be manufactured with a precision in nanometres. The minimum feature of the component is 50 μm. In the experiments, the Si component was coated with copper and then used as the electrode on an EDM machine of 1 μm resolution. In the manufacturing process, 130 V and 0.2 A currents were used for a period of 5 min. The SEM images of the resulting device show clear etched areas, and the electric discharge wave chart indicates a good fabrication condition. The experimental results have been analysed and the new micro-EDM process is found to be able to fabricate 25 μm features.

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Dissertations / Theses on the topic "Micro-metallic components"

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Dhruv, Anand B. "Size effects on formability of very thin sheets." Thesis, IIT Delhi, 2015. http://localhost:8080/iit/handle/2074/6938.

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Edwards, Robert Kenneth. "Laser peen forming for the micro-scale shaping and adjustment of metallic components." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526885.

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Bosh, Nasim [Verfasser], Claas [Akademischer Betreuer] Müller, Hadi Akademischer Betreuer] Mozaffari-Jovein, and Jürgen [Akademischer Betreuer] [Wilde. "Optimization of the mechanical properties of the metallic components by micro-surface structuring and the improvement of the fatigue behavior." Freiburg : Universität, 2020. http://d-nb.info/1229349413/34.

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Kasvayee, Keivan Amiri. "On the deformation behavior and cracking of ductile iron; effect of microstructure." Doctoral thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Material och tillverkning, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-36852.

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This thesis focuses on the effect of microstructural variation on the mechanical properties and deformation behavior of ductile iron. To research and determine these effects, two grades of ductile iron, (i) GJS-500-7 and (ii) high silicon GJS-500-14, were cast in a geometry containing several plates with different section thicknesses in order to produce microstructural variation. Microstructural investigations as well as tensile and hardness tests were performed on the casting plates. The results revealed higher ferrite fraction, graphite particle count, and yield strength in the high silicon GJS-500-14 grade compared to the GJS-500-7 grade. To study the relationship between the microstructural variation and tensile behavior on macroscale, tensile stress-strain response was characterized using the Ludwigson equation. The obtained tensile properties were modeled, based on the microstructural characteristics, using multiple linear regression and analysis of variance (ANOVA). The models showed that silicon content, graphite particle count, ferrite fraction, and fraction of porosity are the major contributing factors that influence tensile behavior. The models were entered into a casting process simulation software, and the simulated microstructure and tensile properties were validated using the experimental data. This enabled the opportunity to predict tensile properties of cast components with similar microstructural characteristics. To investigate deformation behavior on micro-scale, a method was developed to quantitatively measure strain in the microstructure, utilizing the digital image correlation (DIC) technique together with in-situ tensile testing. In this method, a pit-etching procedure was developed to generate a random speckle pattern, enabling DIC strain measurement to be conducted in the matrix and the area between the graphite particles. The method was validated by benchmarking the measured yield strength with the material’s standard yield strength. The microstructural deformation behavior under tensile loading was characterized. During elastic deformation, strain mapping revealed a heterogeneous strain distribution in the microstructure, as well as shear bands that formed between graphite particles. The crack was initiated at the stress ranges in which a kink occurred in the tensile curve, indicating the dissipation of energy during both plastic deformation and crack initiation. A large amount of strain localization was measured at the onset of the micro-cracks on the strain maps. The micro-cracks were initiated at local strain levels higher than 2%, suggesting a threshold level of strain required for micro-crack initiation. A continuum Finite Element (FE) model containing a physical length scale was developed to predict strain on the microstructure of ductile iron. The material parameters for this model were calculated by optimization, utilizing the Ramberg-Osgood equation. The predicted strain maps were compared to the strain maps measured by DIC, both qualitatively and quantitatively. To a large extent, the strain maps were in agreement, resulting in the validation of the model on micro-scale. In order to perform a micro-scale characterization of dynamic deformation behavior, local strain distribution on the microstructure was studied by performing in-situ cyclic tests using a scanning electron microscope (SEM). A novel method, based on the focused ion beam (FIB) milling, was developed to generate a speckle pattern on the microstructure of the ferritic ductile iron (GJS-500-14 grade) to enable quantitative DIC strain measurement to be performed. The results showed that the maximum strain concentration occurred in the vicinity of the micro-cracks, particularly ahead of the micro-crack tip.
Denna avhandling fokuserar på effekten av variationer i mikrostrukturen på mekaniska egenskaper och deformationsbeteende hos segjärn. För att undersöka dessa effekter, två olika sorter av segjärn, (i) GJS-500-7 och (ii) högkisellegerad GJS-500-14, gjutits till plattor av olika tjocklekar för att generera mikrostrukturvariationen. Mikrostrukturundersökning, samt drag- och hårdhetsprov gjordes på de gjutna plattorna. Resultaten visade att en högre ferritfraktion, grafitpartikelantal och sträckgräns i den högkisellegerade GJS-500-14-sorten jämfört med GJS-500-7. För att studera förhållandet mellan mikrostrukturell variation och spännings-töjningsbeteendet på makroskala, modellerades detta med hjälp av Ludwigson-ekvationen. De erhållna spännings-töjningsegenskaperna modellerades baserat på mikrostrukturell karaktäristika genom multipel linjärregression och variansanalys (ANOVA). Modellerna visade att kiselhalt, grafitpartikelantal, ferritfraktion och porfraktion var de viktigaste bidragande faktorerna. Modellerna implementerades i ett simuleringsprogram för gjutningsprocessen. Resultatet från simuleringen validerades med hjälp av experimentella data som inte ingick i underlaget för regressionsanalysen. Detta möjliggjorde att prediktera spännings-töjningsbeteendet och dess variation hos gjutna segjärns komponenter med liknande sammansättning och gjutna tjocklekar som användes i denna studie. För att kunna undersöka deformationsbeteendet på mikroskala utvecklades en metod för kvantitativ mätning av töjning i mikrostrukturen, genom DIC-tekniken (digital image correlation) tillsammans med in-situ dragprovning. I denna metod utvecklades en grop-etsningsprocess för att generera ett slumpvis prickmönster, vilket möjliggjorde DIC-töjningsmätning i matrisen och i området mellan grafitpartiklarna med tillräcklig upplösning. Metoden validerades genom benchmarking av den uppmätta sträckgränsen mot materialets makroskopiska sträckgräns mätt med konventionell dragprovning. Det mikrostrukturella deformationsbeteendet under dragbelastning karakteriserades. Under elastisk deformation avslöjade töjningsmönstret en heterogen töjningsfördelning i mikrostrukturen, och bildandet av skjuvband mellan grafitpartiklar. Sprickbildning initierades vid låg spänning och redan vid de spänningsnivåer som ligger vis ”knät” på dragprovningskurvan, vilket indikerar energidissipering genom både begynnande plastisk deformation och sprickbildning. Den lokala töjningen vis sprickinitiering skedde då den lokala töjningen översteg 2%, vilket indikerar att detta skulle kunna vara en tröskelnivå för den töjning som erfordras för initiering av mikro-sprickor. En kontinuum Finita Element (FE) modell utvecklades för att prediktera töjningen hos ett segjärn och dess fördelning i segjärns mikrostruktur. Materialparametrarna för denna modell optimerades genom att anpassa parametrarna i Ramberg-Osgood ekvationen. De predikterade töjningsfördelningarna jämfördes med de experimentell uppmätta töjningsmönstren uppmätta med DIC, både kvalitativt och kvantitativt. Töjningsmönstren överensstämde i stor utsträckning, vilket resulterade i att modellerna kunde anses vara validerade på mikronivå. För att kunna mäta töjningsmönster under dynamiska förlopp på mikronivå utvecklades en metod för att skapa prickmönster och att utföra in-situ CT provning i ett svepeletronmikroskop (SEM). Prickmönstret skapades genom avverkning med en fokuserad jonstråle (FIB), och provades på det ferritiska segjärnet (GJS-500-14 grad). Resultaten visade att maximal töjningskoncentration fanns i närheten av mikrosprickorna, framförallt framför sprickspetsen.

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Book chapters on the topic "Micro-metallic components"

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Zhang, Hong-Ying, and Guang-Ping Zheng. "Simulation of Plastic Deformation Behaviors of Bulk Metallic Glasses with Micro- and Nano-sized Pores." In Mechanical and Materials Engineering of Modern Structure and Component Design, 231–42. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19443-1_18.

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Fu, Ming-Wang, and Jun-Yuan Zheng. "Progressive and Compound Forming of Metallic Sheets for Making Micro-/Meso-Scaled Parts and Components." In Reference Module in Materials Science and Materials Engineering. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-819726-4.00022-3.

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Quintana Rodríguez, Elizabeth, Domancar Orona Tamayo, José Nicacio González Cervantes, Flora Itzel Beltrán Ramirez, María Alejandra Rivera Trasgallo, and Adriana Berenice Espinoza Martínez. "Getting Environmentally Friendly and High Added-Value Products from Lignocellulosic Waste." In Biotechnological Applications of Biomass. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.93645.

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In recent years, alternatives have been sought for the reuse of lignocellulosic waste generated by agricultural and other industries because it is biodegradable and renewable. Lignocellulosic waste can be used for a wide variety of applications, depending on their composition and physical properties. In this chapter, we focus on the different treatments that are used for the extraction of natural cellulose fibers (chemical, physical, biological methods) for more sophisticated applications such as reinforcement in biocomposites. Due to the different morphologies that the cellulose can present, depending from sources, it is possible to obtain cellulose nanocrystals (CNCs), micro- nanofibrillated cellulose (MFC/NFC), and bacterial nanocellulose (BNC) with different applications in the industry. Among the different cellulose nanomaterials highlighted characteristics, we can find improved barrier properties for sound and moisture, the fact that they are environmentally friendly, increased tensile strength and decreased weight. These materials have the ability to replace metallic components, petroleum products, and nonrenewable materials. Potential applications of cellulose nanomaterials are present in the automotive, construction, aerospace industries, etc. Also, this chapter exhibits global market predictions of these new materials or products. In summary, lignocellulosic residues are a rich source of cellulose that can be extracted to obtain products with high value-added and eco-friendly characteristics.

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Mahomed, Nawaz. "Shrinkage Porosity in Steel Sand Castings: Formation, Classification and Inspection." In Casting Processes and Modelling of Metallic Materials. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.94392.

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In this Chapter, shrinkage porosity defects in steel castings are analysed, particularly for low carbon, high alloyed steels, which have applications in critical engineering components. It begins with the mechanisms for porosity formation within the solidification contraction phase of the casting cycle, highlighting the importance of feeder design. This is followed by characterisation of the solidification phase of steel alloys, including the evolution of phases, which is important in distinguishing between microstructure and porosity in microscopy analysis. A more detailed discussion of interdendritic feeding and mechanisms for shrinkage micro-porosity is then provided. This leads to the well-established interdendritic flow model and commonly-used thermal criteria for shrinkage porosity prediction. The discussions are then consolidated through the classification of shrinkage porosity in terms of formation mechanisms and morphology, and its causes relating to composition, design and process conditions. Finally, engineering standards for classification and inspection of porosity types and severity levels in steel castings are discussed. Throughout, basic design and process improvement approaches for improving melt feeding during solidification contraction is given, with emphasis on providing practical solutions for prediction and evaluation of shrinkage porosity defects in castings.

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Chistyakov, Yu D., Yu A. Baikov, and M. V. Akulionok. "Fluctuation Theory of the One-component and Binary Metallic Melt's Crystallization in the Case of Micro- and Macro-Systems." In May, 609–20. De Gruyter, 1988. http://dx.doi.org/10.1515/9783112485460-005.

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Conference papers on the topic "Micro-metallic components"

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Perry, Tyler L., Dirk Werschmoeller, Xiaochun Li, Frank E. Pfefferkorn, and Neil A. Duffie. "Micromelting for Laser Micro Polishing of Meso/Micro Metallic Components." In ASME 2007 International Manufacturing Science and Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/msec2007-31173.

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The relative surface accuracy (surface roughness/feature size) of meso/micro parts fabricated by emerging meso/micro manufacturing processes is generally worse than that of macro parts fabricated by conventional processes. Meso/micro parts have unique tribology issues and surface roughness strongly impacts their performance, hence there is a demand for effective polishing of their complex shapes. A laser micro polishing method based on rapid surface micromelting is described. To develop a fundamental understanding of the underlying processes, a nickel sample was fabricated using silicon-based microfabrication and electroplating techniques. Results demonstrating the effectiveness of laser polishing using a pulsed 1064 nm Nd:YAG laser are presented. These results show that brief (200–300 ns) laser pulses can significantly improve the sample surface roughness (Ra). Additionally, by examining surface profile data in the spatial frequency domain it is clear that using pulses (up to 300 ns), laser polishing can effectively remove surface roughness features greater than 200 mm−1 in spatial frequency.

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Sankaré, S., D. Boisselier, Th Engel, and F. Hlawka. "Additive laser manufacturing of small metallic components by laser micro-cladding." In ICALEO® 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2009. http://dx.doi.org/10.2351/1.5061463.

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Yang, Yong, and Xiaochun Li. "Micro Ultrasonic Machining of Ceramic MEMS With Micro Metallic Dies." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41635.

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Micro ultrasonic Machining (MUSM) is useful for producing micro parts in brittle materials, especially ceramics. By use of suitable micro metallic dies, the efficiency of fabrication can be significantly enhanced. In this study, the LIGA process was used to generate micro nickel dies, which also served as microelectrodes in Die-sinking Electrical Discharge Machining (EDM) to produce micro tungsten dies for MUSM. With these micro metallic dies, micro ceramic components were fabricated.

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Qu, Yi, Hongseok Choi, Tyler Perry, Yongho Jeon, Frank Pfefferkorn, Xiaochun Li, and Neil Duffie. "Numerical and Experimental Investigation of Micromelting for Laser Micro Polishing of Meso/Micro Metallic Components." In ASME 2006 International Manufacturing Science and Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/msec2006-21126.

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The relative accuracy (accuracy/overall dimension) of meso/micro parts (e.g. dies/molds) generally is far worse than that of macro parts fabricated by conventional manufacturing processes. Meso/micro parts have unique tribology issues, and surface roughness strongly impacts their relative accuracy and performance. There is a high demand for effective polishing of complex shapes in meso/micro engineering. A laser micro polishing method based on rapid surface micro melting is described in this paper. Fundamental understanding of pulse laser micro melting is achieved through a combination of studies of analytical modeling, numerical simulation and experimentation. It is found that a power limit window exists for laser polishing. In the experimental study, a Nd:YAG laser with a wavelength of 355 nm and a pulse of 10 ns is used to polish patterned electroplated nickel surfaces. The experiments show an improvement of surface roughness with repetitive rapid micro melting. These preliminary results show improved surface roughness can be achieved and that laser micro polishing is a viable methodology for automated polishing of 3-D meso/micro complex surfaces of metallic parts.

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Wilden, J., J. P. Bergmann, and T. Luhn. "Aspects of Thermal Spray Molding of Micro Components." In ITSC2006, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima, and J. Voyer. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.itsc2006p1243.

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Abstract In this paper the principle of “Thermal Spray Molding” and some application are presented. Micro technology is a very fast growing market nowadays. Metallic micro devices can be produced for example by means of stereo lithography and selective etching. Unfortunately the material range for these processes is limited. The new manufacturing concept of thermal spray molding uses powder or wire as base material, so that an extended material choice for micro parts, for example micro components made of super hard or corrosion resistant steel is possible.

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Arentoft, M., N. A. Paldan, R. S. Eriksen, T. Gastaldi, J. A. Wert, and M. Eldrup. "Bulk Forming of Industrial Micro Components in Conventional Metals and Bulk Metallic Glasses." In 10TH ESAFORM CONFERENCE ON MATERIAL FORMING. AIP, 2007. http://dx.doi.org/10.1063/1.2729589.

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Guan, Yong, Shenglin Ma, Qinghua Zeng, Wei Meng, Jing Chen, and Yufeng Jin. "Effect of Metallic Materials Films on the Properties of Copper/Tin Micro-Bump Thermo-Compression Bonding." In 2017 IEEE 67th Electronic Components and Technology Conference (ECTC). IEEE, 2017. http://dx.doi.org/10.1109/ectc.2017.59.

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Tredway, Bill, Jun Shi, John Holowczak, Venkata Vedula, Connie E. Bird, S. Scott Ochs, Luca Bertuccioli, David J. Bombara, and Kevin E. Green. "Design of Ceramic Components for an Advanced Micro-Turbine Engine." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-54205.

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Ceramic components, due to their high temperature capability, allow significantly higher turbine inlet temperatures with minimal cooling. Hot-section engine components, including combustor, integral vane ring, integrally bladed turbine rotor, and turbine tip shroud were designed for an advanced micro-turbine engine, with special attention to attachment methods that minimize thermal stresses due to large differences between coefficients of thermal expansion between metallic and ceramic materials. Detailed aerodynamic, thermal and stress analyses were performed. Both steady state and transient conditions were evaluated to guide design decisions that lead to optimal component reliability and manufacturability. This paper describes the component design, analysis, and fabrication experiences with silicon based monolithic ceramic materials.

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Edwards, Kenneth, Stuart Edwardson, Christian Carey, Geoff Dearden, and Ken Watkins. "Laser peen forming for non-thermal 2D shaping and micro adjustment of sensitive metallic components." In ICALEO® 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2008. http://dx.doi.org/10.2351/1.5061275.

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Park, Inkyu, Seung H. Ko, Heng Pan, Albert P. Pisano, and Costas P. Grigoropoulos. "Micro/Nanoscale Structure Fabrication by Direct Nanoimprinting of Metallic and Semiconducting Nanoparticles." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43878.

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In this paper, we present our recent development of direct nanoimprinting of metal and semiconductor nanoparticles for a simple but high-throughput fabrication of micro/nanoscale structures. Nanoparticle suspension with self-assembled-monolayer (SAM) protected-nanoparticles (Au, Ag, and CdSe-ZnS core-shell quantum dots) suspended in alpha-terpineol carrier solvent are used as solutions for direct nanoimprinting. Polydimethylsiloxane (PDMS)-based soft imprinting molds with micro/nanoscale features are used. Process and material flexibility enable a very low temperature (80°C) and low pressure (5psi) nanoimprinting process and results in superfine features from micrometers down to ∼100nm resolutions. We will show the geometrical and electrical characterization of nanoimprinted structures and demonstrate working electronic components such as resistors or organic field effect transistors (OFET).

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