摘要
当陶瓷材料受到温度骤变时产生的热应力超过其强度时,材料会发生开裂、剥落甚至断裂,进而失效,因此研究陶瓷材料的抗热震性成为热点。简述了陶瓷材料抗热震性评价理论以及抗热震性的测试与表征方法,综述了提高抗热震性的方法,包括补强增韧、提高热导率、降低热膨胀系数、降低弹性模量等,总结了影响抗热震性的外部因素,提出了今后提高陶瓷材料抗热震性的发展方向。
When the thermal stress caused by sudden temperature change of ceramic materials exceeds its strength, materials will happen to crack, peel and even fracture, and then failure. Therefore, the study of thermal shock resistance of ceramic materials becomes a hot spot. The evaluation theory of thermal shock resistance of ceramic materials and the methods for testing and characterizing are described. The methods of improving thermal shock resistance, including strengthening and toughening, improving thermal conductivity, reducing thermal expansion coefficient, and reducing elastic modulus, are reviewed. The external influencing factors of thermal shock resistance are summarized. The development direction of improving thermal shock resistance of ceramic materials in future is proposed.
作者
赵婷婷
范立坤
黎阳
ZHAO Tingting;FAN Likun;LI Yang(Shanghai Key Laboratory of Engineering Materials Application and Evaluation,Shanghai Research Institute of Materials,Shanghai 200437,China;School of Environmental and Materials Engineering,Shanghai Polytechnic University,Shanghai 201209,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2022年第12期1-8,共8页
Materials For Mechanical Engineering
关键词
陶瓷材料
抗热震性
热应力断裂
影响因素
ceramic material
thermal shock resistance
thermal stress fracture
influence factor
