Effect of the sealing process on the structure and mechanical properties of ceramic-metal sealing fitting

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作者：
机构：
[1] Zhang, Xiao
[2] Lü, Lingtao
[3] Yang, Jianfeng
[4] Bao, Chonggao
[5] Qiao, Guanjun
来源：
Yang, J. (yang155@mail.xjtu.edu.cn) | 1600年 / Science Press卷 / 42期
关键词：
Ceramic metal halide lamp - Ceramic-metal - Element distribution - Energy dispersive spectrometers - Pre-oxidation - Reaction layers - Sealing process - Sealing temperature;
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摘要：
With sufficient investigating the effect of pre-oxidation, sealing temperature and holding time on the shear strength and microstructure of the Al2O3-Nb sealing materials. The shear strength, microstructure and element distribution of sealing material were investigated by the strength machine, scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Furthermore, the X-ray diffraction (XRD) was used to investigate the phase of sealing region. The strength results showed that the shear strength reached to 94.5 MPa when the sealing temperature was 1390°C and holding 10 min, the XRD results showed that the Dy2Si2O7 phase was found in the sealant/Al2O3 interface. In addition, the thickness of reaction layer which was formed near the interface of sealant/Al2O3 was about 2 μm. Copyright © 2013, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.
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