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Diffusion bonding of Al alloy to Al2O3 ceramicFENG Ji-cai(冯吉才), WANG Da-yong(王大勇), LI Zhuo-ran(李卓然), LIU Hui-jie(刘会杰)(National Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology, Harbin 150001, China)Abstract:A layer of Cu was sintered on the surface of Al2O3 ceramic before bonding, and then diffusion bonding technology was applied to bond Al2O3/Cu to Al......
. Fig.8 Diffusion layer thickness as function of bonding temperature at various pressures: (a) 8 MPa; (b) 12 MPa; (c) 16 MPa The composition, extent, nature and properties of the phases originated... Influences of diffusion bonding process parameters on bond characteristics of Mg-Cu dissimilar joints G. MAHENDRAN1, V. BALASUBRAMANIAN2, T. SENTHILVELAN3 1. Department of Mechanical......
bonding at constant temperature and pressure, phase transformation super plastic diffusion bonding, diffusion bonding under pulsatile pressure and HIP (hot isostatic pressing) diffusion bonding [6... HIP diffusion bonding of P/M titanium alloy Ti-6Al-4V and stainless steel 1Cr18Ni9Ti LANG Ze-bao(郎泽保), WANG Liang(王亮), ZHANG Xu-hu(张绪虎) Aerospace Research Institute of Materials and Processing......
SUPERPLASTICITY AND DIFFUSION BONDING OF IN718 SUPERALLOY K.F. Zhang1,D.Z. Wu1,W.B. Han1,B. Wang1 (1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract:The superplasticity and diffusion bonding of IN718 superalloy were studied in this article. The strain rate sensitivity index m was obtained at different temperatures and various initial......
Atomic diffusion properties in wire bonding LI Jun-hui(李军辉), WANG Fu-liang(王福亮), HAN Lei(韩 雷), DUAN Ji-an(段吉安), ZHONG Jue(钟 掘) College of Mechanical-Electronical Engineering, Central South... interface but in basis material, and the bonded strength at interface is enhanced by diffused atom from the other side. Key words: thermosonic bond; atomic diffusion; dimples, bonding strength ......
Interfacial microstructure and chemical stability during diffusion bonding of single crystal Al2O3-fibres with Ni25.8Al9.6Ta8.3Cr matrix WAN Xiao-jun1, 2, LIN Jian-guo2 1. Department of Physics... particles of Ta-rich phase were also precipitated in NiAl matrix near the interface. Key words: NiAl alloy composite; Al2O3 fibre; diffusion bonding 1 Introduction NiAl alloys are attractive candidate......
-Cu binary phase diagram [12]. The thicknesses of diffusion layers formed at bonding interface increased and the intermetallic phases in diffusion layers were changed from (α+θ) phase to η2, (θ+η2), (α...) The thicknesses of diffusion layers formed at bonding interface increased and the intermetallic phases in diffusion layers were changed from (α+θ) phase to η2, (θ+η2), (α+θ) phases with aging time. 3......
joint were studied via scanning electron microscopy(SEM) and energy dispersive spectrometry(EDS). Diffusion bonding of Ti6Al4V to Cu-10Sn bronze was investigated at different holding time. Four obvious.... Key words: Ti6Al4V; Cu-10Sn bronze; diffusion bonding ......
is D=1.64×10-20 cm2/s at 200 ℃[15]. This diffusion is faster than that of Au in Cu because the Cu atom is smaller than the Au atom. It was found from some ultrasonic wire bonding investigations that temperature rise at the bonding interface was 80-300 ℃[16]. According to the Fick’s diffusion law, the thermal interdiffusion distance can be obtained from the following equation: X2=Dt, where t......
