基于相对法理论的陶瓷涂层常温与高温力学性能评价

项目名称： 基于相对法理论的陶瓷涂层常温与高温力学性能评价

项目编号： No.51472227

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 包亦望

作者单位： 中国建筑材料科学研究总院有限公司

项目金额： 86万元

中文摘要： 陶瓷涂层(如热障涂层、防腐涂层、耐磨涂层等）是不能从基体上分离出来进行测试的, 因此其力学性能的评价除硬度之外几乎没有测试方法和检测技术，只有越来越紧迫的需求。针对这种重要需求和关键问题，本项目提出相对法评价技术和计算模型，通过间接测试的方法获得陶瓷涂层的弹性模量和强度数据，并进一步推广到高温环境下的涂层性能测试以及多层复合涂层的各层模量的评价。其核心是在理论上建立涂层材料与基体材料和复合材料性能之关系，从而可以用基体和复合材料的测试数据算出涂层材料的性能。实验上则采用常规的激励法、弯曲法和十字交叉法等标准化技术来获得以往无法测得的涂层材料的弹性模量和强度以及涂层界面结合强度等性能，为陶瓷涂层材料的设计和可靠性评价提供有效手段。目标是要尽快结束陶瓷涂层材料的力学性能无法测试的历史，建立陶瓷涂层的常温弹性模量、断裂强度以及界面结合强度的评价方法并在国内外标准化。

中文关键词： 陶瓷涂层；力学性能；弹性模量；高温性能；相对法

英文摘要： Ceramic coatings, such as thermal barrier coating, wear-resistance coating and anti-corrosion coatings, are more and more widely used in modern industry. Since most brittle coatings are tightly bonded on substrates and hardly separated from the substrates, the mechanical properties of the coating on substrate are difficult to measure like monolithic materials. Except to hardness measurement, there is no mechanical property test available for ceramic coating.Over the years, the fast development of ceramic coatings yields great requirement for new approaches to measure mechanical properties of the coating. A new technique called relative method and related calculation model were proposed in this project to evaluate elastic modulus and strength of ceramic coatings through indirect approach, and further expand to high temperature testing environment as well asthe modulus of each layer in multilayer coatings. The key of this method is to establish the theoretical relationship among the properties of coating and properties of coating/substrate system and substrate properties. The properties of ceramic coating can be obtained simply by testing the substrate and coated sample. By this way, the elastic modulus, strength and interfacial bond strength of ceramic coatings are determined by impulse excitation technique, three point bending and cross-bonded method. Those methods never used for coatings properties before. The aim of this work is trying to end the history in which the properties of ceramic coatings hardly be tested, and to establish the evaluation methodology and standardization of mechanical properties of ceramic coatings.

英文关键词： ceramic coating;mechanical properties;elastic modulus;high temperature properties;relative method