共搜索到3075条信息,每页显示10条信息,共308页。用时:0小时0分0秒401毫秒
......
......
Influence of oxygen partial pressure on properties of N-doped ZnO films deposited by magnetron sputtering WANG Jin-zhong(王金忠)1, 2, E. ElANGOVAN2, N. FRANCO3, A. ALVESE3, A. REGO4, R... frequency (RF) sputtered on glass substrates and studied as a function of oxygen partial pressure (OPP) ranging from 3.0?10-4 to 9.5?10-3 Pa. X-ray diffraction patters confirmed the polycrystalline......
Numerical simulation of temperature distribution and heat transfer during solidification of titanium alloy ingots in vacuum arc remelting process YANG Zhi-jun(杨治军), ZHAO Xiao-hua(赵小花), KOU Hong...; accepted 13 June 2010 Abstract: In order to get a better understanding of the vacuum consumable arc remelting (VAR) processes and thus to optimize them, a 3D finite element model was developed......
RESEARCH AND DEVELOPMENT OF NEW SUPERALLOY REMELTING PROCES W.Xie1 (1.Baosteel Group Shanghai No.5 Steel Co., Ltd., Shanghai 200940, China) Abstract:Shanghai No.5 Steel Co., Ltd.has recently introduced a set of 5-ton protective atmosphere electroslag remelting furnace and a set of 10-ton helium-cooling vacuum arc remelting furnace,both of them are the first one of its kind in China.With......
states were investigated. A new method, cyclic closed-die forging (CCDF), was employed to deformation of AZ80 as a recrystallization and partial melting (RAP) process. During partial remelting, finer... temperature. Fig. 1 Schematic of cyclic closed-die forging (CCDF) The microstructure evolution during partial remelting in the semi-solid state was investigated on as-cast and four-pass CCDF-formed AZ80......
route, cyclic extrusion compression (CEC) and conventional compression were used to predeform as-cast AM60B, respectively. Partial remelting and thixoforming were also carried out within the semi-solid... in the compression formed alloy. During partial remelting, the alloy treated by CEC exhibited ideal, fine microstructure, in which completely spheroidized grains contain little entrapped liquid. Polygonal grains......
文献标识码:A Effect of isothermal temperature on microstructure of semi-solid 2024 alloy during partial remelting WANG Shun-cheng, LI Yuan-yuan, CHEN..., 630, 640 and 650 ℃, respectively. The effect of isothermal temperature on the microstructure of semi-solid billet during partial remelting was studied by optical microscopy and metallographic image......
J. Cent. South Univ. Technol. (2008) 15(s1): 215-220 DOI: 10.1007/s11771-008-349-4 Application research on metal rheological forming of reproducing kernel partial method YIN Shui-ping(殷水平), LUO... variational principle and programming reproducing kernel partial method (RKPM), the influence of node number, weight functions and size factor on the solution was discussed and the suitable range of size......
Influence of Supports on Catalytic Performance and Carbon Deposition of Palladium Catalyst for Methane Partial Oxidation Weng Duan1,Shi Fangli2,Shen Meiqing2,Fei Yanan2,Wang Jun2 (1.Department...,Tianjin University,Tianjin 300072,China) Abstract:The catalytic performance of methane partial oxidation was investigated on Pd/CeO2-ZrO2 and Pd/α-Al2O3 catalysts. The catalysts were characterized......