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Effect of alternative magnetic field on the diffusion layer growth in Al/Zn coupleLIU Xiaotao, CUI Jianzhong, WU Xiaoming, GUO Yanhui, and ZHANG Jun The Key Laboratory of Electromagnetic Processing... on the growth of the diffusion layer in Al-Zn diffusion couple was studied. The thickness of the diffusion layer was examined. The results show that the alternative magnetic field increases the thickness......
code: A 1 INTRODUCTION Diffusion in liquid in presence of multi-components is common in engineering practice, for example, the separation operation as liquid-liquid extraction, gas absorption... the effective diffusivities of gas in porous media. Most of gas-solid heterogeneous noncatalytic reactions in metallurgy are associated with the intraparticle diffusion of ternary gases. Although the metallurgy......
by the flowing nitrogen gas. So, when the surface was just finished, the temperature increment was very low (nearly the room temperature), which could prevent the increase of hardness on the top layer... Use of nitrogen gas in high-speed milling of Ti-6Al-4V KE Ying-lin(柯映林)1, 2, DONG Hui-yue(董辉跃)1, LIU Gang(刘 刚)1, ZHANG Ming(章 明)1 1. Zhejiang Provinvicial Key Laboratory of Advanced Manufacturing......
rule of sub-micron. The achievement of the discrete Ge mole fraction in the SiGe layer is a key engineering in low-temperature SiGe epitaxial growth using HVCVD. The pre-flow of GeH4 gas enhanced the Ge mole fraction and SiGe layer thickness. In addition, the Ge mole fraction and SiGe layer thickness increases with the gas ratio of GeH4/SiH4 + GeH4, process temperature, and gas flow time. However......
Mg alloy surface alloying layer fabricated through evaporative pattern casting technology CHEN Dong-feng(陈东风), DONG Xuan-pu(董选普), ZHANG Xiong(张 雄), FAN Zi-tian(樊自田) State Key Laboratory... factors of surface alloying layer by evaporative pattern casting technology were investigated. A certain thickness alloying layer was formed on the surface of Mg-alloy matrix when the pouring temperature......
profiles in diffusion zone have been conducted. The effect of the vacuum level during the process and the process parameters such as time and temperature on layer diffusion growth on the carbon steel surface has been investigated. 关键词:Diffusion layers; thermochemical treatment; diffusion chromizing; carbide layer; [全文内容正在添加中] ......
words: annealing temperature; diffusion bonding; diffusion layer; residual stress; tensile strength 1 Introduction With the rapid development of the transportation, aerospace, and defense industries... diagram, the joining temperature was chosen as 440 °C. Specimens were successfully joined with a method called vacuum diffusion bonding under the protection of argon gas. After that, in order to refine......
Monitoring the Diffusion Layer During Passive Film Breakdown on Alloy 800 with Digital HolographyDa-Hai Xia1,2,3,Jing-Li Luo3,Zhi-Ming Gao1,2,Bo-Yu Yuan4,Liang Li5,Chao Wang51. Tianjin Key Laboratory...">The effects of chloride and thiosulfate ions on localized corrosion of alloy 800 are investigated through dynamical observation of the change in phase image of the diffusion layer during passive film......
fraction), were studied, respectively. The controlled mechanism of alloy layer formation in the process of galvanizing by the diffusion path change was proposed. The results show... the diffusion path cuts the tie-line of the two-phase region of melting bath and the relevant Fe-Al compound, the first Fe-Al compound layer is steadiness losing and breaking, which makes the thickness......
Diffusion behavior of Cr in gradient nanolaminated surface layer on an interstitial-free steelS.L.Xie1,2,Z.B.Wang1,K.Lu11. Shenyang National Laboratory for Materials Science, Institute of Metal... depth. High thermal stability was confirmed in the GNL surface layer after annealing at 500℃. Diffusion measurements showed that effective diffusivity of Cr in GNL layer is 4–6 orders of magnitude......