Prestress in alumina-strengthened porcelain as estimated with Raman scattering spectroscopy
Prestress in alumina-strengthened porcelain as estimated with Raman scattering spectroscopy
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DOI：
10.2109/jcersj2.21013
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发表时间：
2021-05-01
影响因子：
1.1
通讯作者：
Fujisawa, Tomotsumi
中科院分区：
文献类型：
--
作者：
Akatsu, Takashi;Unno, Masashi;Fujisawa, Tomotsumi
利用拉曼光谱技术，通过监测α-氧化铝的A（1g）振动模式的拉曼谱带417 cm（-1）处的频移，估算了陶瓷冷却过程中陶瓷基体和氧化铝颗粒之间热收缩失配引起的氧化铝强化陶瓷中的预应力。这种光谱估计支持预应力的有效性，预计在瓷冷却过程中，在类似于850摄氏度开始积累。(C)2021年，日本陶瓷协会。All rights reserved.
Prestress in alumina-strengthened porcelain, caused by the mismatch in thermal shrinkage between the porcelain matrix and alumina particles during porcelain cooling, is estimated using Raman spectroscopy by monitoring the frequency shift of Raman band at 417 cm(-1), which is assigned to the A(1g) vibrational mode of alpha-alumina. This spectroscopic estimation supports the validity of prestress which is expected to accumulate during porcelain cooling beginning at similar to 850 degrees C. (C) 2021 The Ceramic Society of Japan. All rights reserved.