摘要
近几年新兴陶瓷产业不断拓展,如芯片用高导热陶瓷基板等,推动着材料性能测试技术走向批量化和高效化.断裂韧性是陶瓷材料的一个重要力学性能指标,但现有测试技术存在测试结果误差较大、制样过程繁琐、效率低等问题,使其在工业研发设计及生产中受到一定程度的限制.笔者综述了材料韧性的相关测试技术及对应测试指标包括断裂韧性、断裂能、J积分、冲击韧性等,对比分析了常见陶瓷材料的断裂韧性及其相关力学性能指标,以寻求一种高效的准确的评价方法;考量了陶瓷材料的抗弯强度的适用依据和适用范围,并通过相关文献数据验证其准确性.而笔者将为批量化工业研发设计和陶瓷材料生产过程中的韧性评价提供新的思路.
Abstract
The rapid development of newly ceramic industries,such as high thermal conductive ceramic substrates for chips,have pushed the material performance testing technologies towards batch and high efficiency.Fracture toughness is an im-portant mechanical property of ceramic materials,but there existing some problems,such as large error in test results,cumbersome and inefficient sample preparation process,which limits its role in industrial R&D,design and production In this paper,the related testing techniques and corresponding testing indexes of material toughness are su mmarized,inclu-ding fracture toughness,fracture energy,J integral,impact toughness,etc.,and the fracture toughness and related me-chanical properties of co mmon ceramic materials are compared and analyzed in order to find an efficient and accurate evalu-ation method.The applicable basis and scope of bending strength of ceramic materials are considered,and the accuracy is verified by relevant literature data.This paper will provide a new idea for batch industrial R&D design and toughness evalu-ation in the production process of ceramic materials.
国家科技期刊平台
NSTL
维普
万方数据