X-Ray Diffraction Characteristics of Kovar Alloy and Al₂O₃ Ceramics

Abstract:

In order to study the residual stress of Al₂O₃ ceramics and kovar alloy after brazing, this article conducted both X-ray diffraction and strain gauges measurement. Using Stress diffractometer and constant strength beam calibration method to examine the x-ray diffraction characteristics of these two materials. And compare measured results and theoretical results. It is shows that the Al₂O₃ ceramics has two obvious diffraction peaks in 140°~170°, where the diffraction peak at 2θ=153° can reflect the changes of stress more accurately then one at 2θ=146°. For kovar alloy, there is only one diffraction peak at 2θ=149° in range of 140°~170° and it has good linear relationship with stress.

• Periodical: Materials Science Forum (Volume 872)
• Pages: 123-127
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.872.123
• Online since: September 2016
• Authors: Qi Le Gao, Yi Liang Zhang*, Jun Ming Zhou, Jia Gen Peng, Shou Liang Hu
• Keywords: Al₂O₃ Ceramics, Kovar Alloy, X-Ray Diffraction

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