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enhanced chemical vapor deposition (PECVD) were presented. Among lots of influential parameters, the effects of the catalytic film thickness and the pretreatment plasma power on the growth of CNTs were... is the optimal condition for growing CNTs with about 50 nm in diameter. By increasing the pretreatment plasma power, the diameter of CNTs decreases gradually. However, the diameter of CNTs does......
Performance improvement of ZnO film by room-temperature oxygen plasma pretreatment ZHAO Ping(赵 平)1, XIA Yi-ben(夏义本)1, WANG Lin-jun(王林军)1, LIU Jian-min(刘健敏)1, XU Run(徐 闰)1... (XRD) patterns show that the c-axis orientation of ZnO film increases evidently after oxygen plasma pretreatment. The AFM and SEM measurements also show that the high c-axis orientation of ZnO film......
Effects of H2O2 pretreatment on surface characteristics and bioactivity of NaOH-treated NiTi shape memory alloy CHU Cheng-lin(储成林)1, HU Tao(胡 涛)1, ZHOU Jun(周 俊)1, PU Yue-pu(浦跃朴)2, YIN Li-Hong(尹立红... Abstract: The effects of H2O2 pretreatment on the surface characteristics and bioactivity of NaOH-treated NiTi shape memory alloy(SMA) were investigated by scanning electron microscopy, X-ray......
Preparation of ultrafine WC-Co cermets by combining pretreatment and consolidation with spark plasma sinteringZHAO Shixiana, SONG Xiaoyana, WANG Mingshenga, LIU Guoquanb, and ZHANG Jiuxinga a Key... method that contains pretreatment of the milled powder mixture and subsequent spark plasma sintering (SPS). Ball milling parameters and the pretreatment temperature have significant effects......
痕量锗的分析进展李丹1,李彪1(1.湖北省武汉市湖北省地质实验研究所)摘 要:锗是一种贵重的稀散金属元素,广泛应用于当代高新科技行业.本文综述了近年来分析样品中痕量锗的试样前处理方法及仪器分析进展.介绍了电热板溶解,微波消解和密闭罐消解前处理样品对测定痕量锗的影响.总结了近年来痕量锗的仪器分析方法包括电感耦合等离子体发射光谱法,原子吸收光谱法,原子荧光光谱法,电感耦合等离子体质谱法,光度法,电化学法和离子色谱法等.指出了不同方法的特点及使用范围,并展望了痕量锗的前处理及其分析方法的发展方向.关键词......
Ultrasonic Plasma Spray--A New Plasma Spray Process WEN Xiong-wei1,LI Lu-ming1,ZHANG Hua-tang1,LU Zhi-qing1 (1.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China) 摘要:The method of arc- ultrasonic is introduced into plasma spray process. The process of spray ZrO2-NiCoCr AlY thermal barrier coatings (TBCs) using air plasma spray (APS) process is studied. A exciting......
J. Cent. South Univ. (2020) 27: 469-477 DOI: https://doi.org/10.1007/s11771-020-4309-y Process control technology of low NOx sintering based on coke pretreatment WANG Zhao-cai(王兆才)1, 2, ZHOU Zhi...; nitrogen oxide; process control; coke breeze pretreatment Cite this article as: WANG Zhao-cai, ZHOU Zhi-an, GAN Min, FAN Xiao-hui, HE Guo-qiang. Process control technology of low NOx sintering based on coke......
Study of the Active Screen Plasma Nitriding H.Dong1,C.X.Li1,Zhao Cheng2,T.Bell1 (1.Department of Metallurgy and Materials, University of Birmingham, Birmingham, UK;2.Plasma Engineering Laboratory, Qingdao University of Science and Technology, Qingdao, China) 摘要:Active screen plasma nitriding (ASPN) is a novel nitriding process, which overcomes many of the practical problems associated......
Plasma Nitriding of Low Alloy Sintered Steels Fakhreddin Ashrafizadeh1,Tom Bell2,Xiao-Ying Li2,Shiva Mansoorzadeh1 (1.Department of Materials Engineering, Isfahan University of Technology Isfahan, Iran;2.School of Engineering, Metallurgy and Materials, The University of Birmingham, Birmingham, UK) 摘要:Fe-3Cr-0.5Mo-0.3C and Fe-3Cr-1.4Mn-0.5Mo-0.367C sintered alloys were plasma nitrided......
Sensing controlled pulse key-holing condition in plasma arc welding JIA Chuan-bao(贾传宝)1, WU Chuan-song(武传松)1, ZHANG Yu-ming(张裕明)2 1. Institute for Materials Joining, Shandong...-holing, a new sensing and control system was developed for monitoring and controlling the keyhole condition during plasma arc welding (PAW). Through sensing and processing the efflux plasma voltage......
