| 引用本文: | 裴晨蕊， 孙德恩， Sam Zhang(新加坡)， 黄佳木.硬质陶瓷涂层增韧及其评估研究进展[J].中国表面工程,2016,29(2):1~9 |
| PEI Chenrui, SUN Deen, ZHANG Sam, HUANG Jiamu.Toughening and Toughness Evaluation of Hard Ceramic Coatings： A Critical Review[J].China Surface Engineering,2016,29(2):1~9 |
|
| 摘要: |
| 硬质陶瓷涂层一般硬度高，但韧性差，在受到较大外加冲击荷载作用时容易产生裂纹并引发失效，从而限制了硬质涂层在工程领域的应用。硬质涂层的增韧研究是当前硬质涂层研究的热点之一。常见硬质涂层增韧方法中，有些是以降低硬度为代价来提高涂层韧性，比如第二相增韧；有些是通过优化涂层结构设计，减小缺陷尺寸，在不损失涂层高硬度的前提下，提高韧性，获得兼具高硬度和高韧性的涂层；有些是通过相变（晶体结构转变）提高涂层的韧性。通过优化涂层结构设计，改变涂层晶粒尺寸、晶界尺寸与复杂程度等，使涂层致密化，从而提高涂层硬度与韧性，从而获得增韧效果，成为研究者越来越关注的焦点。单一增韧方法的局限性，可以通过多种增韧方法协同作用获得突破，协同增韧已成为硬质涂层增韧发展的趋势。目前硬质涂层的韧性评估还没有一个公认的方法，从简单实用出发，常用的有微悬臂梁弯曲法、划痕法和压痕法。 |
| 关键词: 韧性 硬度 多层膜结构 硬质涂层 |
| DOI：10.11933/j.issn.1007-9289.2016.02.001 |
| 分类号: |
| 基金项目: |
|
| Toughening and Toughness Evaluation of Hard Ceramic Coatings： A Critical Review |
|
PEI Chenrui, SUN Deen, ZHANG Sam, HUANG Jiamu1,2
|
|
1. School of Materials Science and Engineering, Chongqing University;2. Nanyang Technological University, Singapore
|
| Abstract: |
| Hard ceramic coatings are always brittle and lack of toughness. They are prone to crack and fail when in contact with large foreign impact. The low toughness limits the use of ceramic coatings in engineering. Toughening of hard ceramic coatings is one of the hot spots. In common ways, improving the toughness of hard ceramic coatings was usually at the cost of hardness, however, the design through optimization of coating architecture to reduce the defects (e.g., densification, etc.) can improve toughness without loss of the hardness. In other words, the coating with both high hardness and high toughness can be obtained by microstructure design or phase transformation. Currently, synergistic effect on several methods is becoming a trend. For toughness measurement, there is no common method, however, micro cantilever bending method,scratch method and indentation method are usually used for their simpleness and practicality. |
| Key words: toughness hardness multilayer structure hard coating |
