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Tantalum oxide barrier in magnetic tunnel junctionsYU Guanghua, REN Tingting, JI Wei, TENG Jiao, and ZHU Fengwu摘 要:<正> Tantalum as an insulating... the oxidation states of Ta barrier. The experimental results show that the chemical state of tantalum is pure Ta5+ and the thickness of the oxide is 1.3 nm. The unoxidized Ta in the barrier may chemically reacted......
by the WC-5Co-2Cr3C2 cermet. Key words: spark plasma sintering; cermet; chromium carbide; tantalum carbide; mechanical properties 1 Introduction Several studies [1-3] have concentrated on the relationship between...%Co-2%TaC powder mixtures were densified by spark plasma sintering using an HP D 25-3 furnace (FCT, Germany). The sintering temperature of 1500 °C was reached at the heating rate of 600 °C/min......
Tantalum oxide barrier in magnetic tunnel junctionsGuanghua Yu, Tingting Ren, Wei Ji, Jiao Teng, and Fengwu ZhuMaterials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China摘 要:<正> Tantalum as an insulating barrier can take the place of Al in magnetic tunnel junctions (MTJs). Ta barriers in MTJs were......
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......
Through-thickness texture gradient of tantalum sputtering targetChao Deng,Shi-Feng Liu,Xiao-Bo Hao,Jing-Li Ji,Qing Liu,Hai-Yang FanCollege of Materials Science and Engineering, Chongqing University摘... gradient of a rolled and subsequently annealed tantalum sputtering target was investigated. The results show that by carefully controlling the rolling process, shear-related components at the surface......
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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......
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Microstructure of a Ti–50wt% Ta alloy produced via laser powder bed fusionLei-Lei Xing1,Hao Chen1,Zhi-Jian Shen1,3,Wei Liu11. School of Materials Science and Engineering,Tsinghua University3... due to their high biocompatibility and corrosion resistance.In this work,nearly fully dense and in situ alloyed Ti-50 wt% Ta samples were fabricated by the laser powder bed fusion(LPBF......
KINETIC MODEL FOR POWDER INJECTION DESULFURIZATION S.R. Yu1,X.G. Bi1,Y. Jin1 (1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China) Abstract:The kinetic model for desulfurization using CaO-based powder injection has been proposed,which accords with the actual process of the experiment......
