TiAlC 陶瓷的超快热冲击评估

Ultra-Fast Thermal Shock Evaluation of TiAlC Ceramic.

作者信息

Ding Wei, Hu Baotong, Fu Shuai, Wan Detian, Bao Yiwang, Feng Qingguo, Grasso Salvatore, Hu Chunfeng

机构信息

Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.

State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100000, China.

出版信息

Materials (Basel). 2022 Oct 3;15(19):6877. doi: 10.3390/ma15196877.

DOI:10.3390/ma15196877

PMID:36234218

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9572080/

Abstract

In this work, the rapid thermal shock behavior of TiAlC ceramics was studied using induction heating. The present evaluation method possesses the merits of very rapid heating within tens of seconds and fast quenching in water of less than 0.1 s, removing the shortcomings of traditional thermal shock. For comparison, the samples were also quenched in the air to investigate the thermal shock mechanisms. The results showed that the abnormal shock occurred in the samples when quenching in water, ascribed to the formed oxide layer on the surface of TiAlC ceramic inhibited the water penetration into the substrate. The quenched TiAlC samples still had a high residual flexural strength above 167 MPa up to 1150 °C, exhibiting promising applications in the high-temperature fields.

摘要

在这项工作中，采用感应加热研究了TiAlC陶瓷的快速热冲击行为。目前的评估方法具有在几十秒内快速加热和在小于0.1秒的时间内于水中快速淬火的优点，消除了传统热冲击的缺点。为了进行比较，还将样品在空气中淬火以研究热冲击机制。结果表明，在水中淬火时样品发生了异常冲击，这归因于TiAlC陶瓷表面形成的氧化层抑制了水渗入基体。淬火后的TiAlC样品在高达1150℃时仍具有高于167MPa的高残余弯曲强度，在高温领域显示出良好的应用前景。