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was used in the gas-pressure sintering of ultra-fine Si3N4 powder. The feedstock’s flowability, debinding rate, defect evolution, and microstructural evolution during production were explored...Injection molding of ultra-fine Si3N4 powder for gas-pressure sinteringXian-feng Yang1,Jiang-hong Yang1,Xie-wen Xu1,Qi-cheng Liu1,Zhi-peng Xie2,Wei Liu21. College of Physics and Electronics Science......
">The ultrafine WC-Co composite powder was synthesized by a newly developed rapid route based on in situ reactions.By using the as-synthesized composite powder,the granulation processing was then carried out to prepare the ultrafine-structured thermal spraying feedstock.The influences of the heat-treatment process on density of the feedstock powder,phase constitution and wear resistance of the resultant WC-Co......
Semisolid A356 alloy feedstock poured through a serpentine channelXiao-rong Yang1,2),Wei-min Mao1),and Chong Gao1) 1) School of Materials Science and Engineering,University of Science and Technology... influence on the microstructure of the feedstock,namely both the microstructure of the feedstock and the microstructure uniformity in the radial direction get worse when the vertical section length......
is the process by which metal parts are joined or solidified from a metal feedstock [7, 8]. The typical metal additive manufacturing includes powder bed fusion such as selective laser melting (SLM) [9..., they all require spherical powder as the feedstock for a good flow ability. Therefore, a good metal feedstock is very critical to metal additive manufacturing. Since the materials utilization rate......
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Warm compaction powder metallurgy of Cu NGAI Tungwai Leo(倪东惠), WANG Shang-lin(王尚林), LI Yuan-yuan(李元元), ZHOU Zhao-yao(周照耀), CHEN Wei-ping(陈维平) (Guangdong Key Laboratory for Advanced Metallic... contents, different compaction pressures and temperatures in order to study the warm compaction of copper powder. Results show that too much admixed lubricant will lead to the squeeze out......
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Numerical Analysis of Powder Properties in Low Power Plasma Torch AN Lian-tong1,GAO Yang1,Yan Zhi-jun1,HEI Zhu-kun1 (1.Marine Engineering Collage, Dalian Maritime University, Dalian Liaoning 116026, China) 摘要:A mathematical model was presented to describe the particle trajectory, velocity and temperature properties in the low power plasma spraying torch (3.6 kW)in which powder particles were......
98W-1Ni-1Fe powder injection molding was studied. The influence of ball milling and stearic acid (SA) addition on ultrafine powder characteristics and feedstock rheological behavior was investigated systematically. Results show that ball milling and SA addition can effectively increase powder loading of feedstock. SA addition can also avoid surface interactions between powder and binder during......
Injection molding and debinding of micro gears fabricated by micro powder injection moldingXin-lei Ni1,Hai-qing Yin1,Lin Liu2,Shan-jie Yi1,Xuan-hui Qu11. School of Materials Science and Engineering... powder injection molding (μPIM) was investigated for possible mass production of micro-components at relatively low cost. However, scaling down to such a level produces challenges in injection......