脆性涂层材料断裂韧性和残余应力压痕表征技术综述

A Review of Vickers Indentation Measurements for Fracture Toughness and Residual Stress of Brittle Coating Systems

多种多样的脆性涂层材料已成为航天航空、国防科技领域的核心关键材料,在国民经济中发挥了巨大作用。断裂韧性和残余应力是评估脆性涂层材料的重要力学性能指标。维氏压痕法是表征脆性涂层材料体系力学性能指标的有效方法之一,得到了广泛的应用。从涂层特点、压痕测试方法、力学模型、实验装备等方面综述了脆性涂层断裂韧性和残余应力压痕测试的研究进展,讨论了力学模型的特点和适用性,并对今后脆性涂层材料压痕表征研究进行了分析展望。

The large variety of brittle coating materials have become crucial materials in the fields of aerospace and national de- lense science and technology, and have played a great role in national economy. Fracture toughness and residual stress are important mechanical criteria of brittle coating materials. Vickers indentation method is one of the effective methods to characterize the mechanical properties of brittle coating materials. In this paper, the research progresses in fracture toughness and residual stress of brittle coatings are reviewed from the aspects of coating characteristics, indentation testing methods, mechanical model and experimental equipment. The characteristics and applicability of indentation mechanics models are discussed in detail. The future development direction of Vickers indentation techniques is also pointed out.