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Surface treatment of 3D outside serrated integral-fin tube manufactured by rolling and extrusion BAI Peng-fei(白鹏飞), LIU Xiao-kang(刘小康), YAN Hui(燕 辉), TANG Biao(唐 彪) School of Mechanical... to eliminate the above problems and maintain or even enhance the heat transfer performance of finned tubes. 3 Surface treatment The surface of outside serrated integral-fin tubes fabricated by means......
在凝固过程的三个不同阶段施加相同频率(f=20 kHz)和相同功率(P=500 W)的超声波(Ultrasonic treatment, UST):1) 初生α(Al)相形核前的阶段,即合金完全处于液相时施加超声波,超声作用温度区间为1150~897 K,简记为L；2) 初生相形核和长大阶段施加超声波,超声作用温度区间为878~832 K,简记为P；3) 共晶转变阶段施加超声,超声作用温度区间为... Journal of Nonferrous Metals, 2016, 26(4): 707-714. [8] ESKIN G I. Improvement of the structure and properties of ingots and worked aluminum alloy semifinished products by melt ultrasonic treatment......
1983-2004 Heat Treatment Embraces Surface Engineering Tom Bell1 (1.Department of Metallurgy and Materials, The University of Birmingham, Birmingham B15 2TT, UK) 摘要:The origins of surface... for Heat Treatment in 1971 later to include Surface Engineering has been pre-eminent in the globalisation of the rapidly developing discipline of surface engineering. The dominant effect......
found in the measured and simulated hardness distributions of the specimens. 关键词:Inverse Quench-Hardening; Heat Treatment Simulation; [全文内容正在添加中] ......
Engineering, Tianjin University, Tianjin 300072, China) Abstract: Ultrasonic method was used to recycle nickel/metal hydride(MH-Ni) batteries under undestroyed state. The effects of ultrasonic on electrode material performance of MH-Ni batteries were investigated by using SEM, EDAX and XRD. The results indicate that with the ultrasonic time increasing, there are obvious dispersing phenomena......
) Abstract: W doped rutile TiO2 powders with different W doping concentrations were prepared by low temperature ultrasonic hydrolysis using tetrabutyl titanate(C16H36O4Ti) as raw material. The powders... irradiation and visible radiation, which are 30.6% and 65.7% higher than those before being doped. Key words: rutile TiO2; tetrabutyl titanate; ultrasonic hydrolysis; W doping; photocatalytic water......
Copper-Ti3SiC2 composite powder prepared by electroless plating under ultrasonic environmentZHANG Zhongbao and XU Shaofan School of Materials Science and Engineering, Hefei University of Technology.... The initial Ti3SiC2 particles are 11 μm in diameter on an average. The Cu plating was carried out at middle temperature (62-65°C) with the application of ultrasonic agitation. The copper deposition rate......
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Heat Treatment of Nd1+xBa2-xCu3O7-δ Superconductors 司平占1,苏大和2,樊占国3 (1.Institute for Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2.Myongji University, Yongin 449-728, South... in pure Ar at 950 ℃. The substitution of Nd ions for Ba ions in the Nd1+xBa2-xCu3O7-δ before and after the heat treatment was investigated by XRD. In order to know the effects of heat treatment......
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