Improvement of solid particle erosion and corrosion resistance using TiAlSiN/Cr multilayer coatings
Improvement of solid particle erosion and corrosion resistance using TiAlSiN/Cr multilayer coatings
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DOI：
10.1016/j.surfcoat.2020.126270
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发表时间：
2020-11-26
影响因子：
5.4
通讯作者：
Zhang, Peipei
中科院分区：
文献类型：
--
作者：
Gu, Jiabin;Li, Liuhe;Zhang, Peipei
采用高功率脉冲磁控溅射（HiPIMS）和直流磁控溅射（DCMS）设计制备了不同铬（Cr）层厚度的TiAlSiN/Cr多层涂层，以提高其耐固体颗粒冲蚀和腐蚀性能。通过系统表征这些涂层的微观结构、硬度、杨氏模量、韧性、耐固体颗粒侵蚀性和腐蚀性能，研究了结构-性能关系。结果表明TiAlSiN层由TiN晶相和非晶相组成。随着Cr层厚度的增加，Cr层的晶粒生长呈柱状，具有较强的Cr(110)择优取向。与TiAlSiN涂层相比，TiAlSiN/Cr多层涂层的韧性和腐蚀性能显着提高。当Cr层厚度增加到21 nm时，TiAlSiN/Cr多层涂层的韧性、H/E比、90°冲击角抗冲蚀性和耐腐蚀性首先增加，然后随着Cr层厚度的进一步增加而降低。结果表明，Cr层厚度为21 nm的TiAlSiN/Cr多层涂层表现出增强的韧性、优异的抗冲蚀性和耐腐蚀性以及高硬度。
The TiAlSiN/Cr multilayer coatings with different thicknesses of chromium (Cr) layers were designed and prepared by high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS) for the improvement of their solid particle erosion and corrosion resistance. The structure-property relationship was investigated by the systematic characterization of the microstructure, hardness, Young's modulus, toughness, solid particle erosion resistance, and corrosion properties of those coatings. The results reveal that the TiAlSiN layers consisted of the TiN crystalline phase and amorphous phase. As the Cr layers thickness increased, the grain growth of the Cr layers was columnar with a strong Cr (110)-preferred orientation. Compared with the TiAlSiN coating, the TiAlSiN/Cr multilayer coatings showed significantly improved toughness and corrosion performance. The toughness, H/E ratio, erosion resistance at impact angle of 90 degrees, and corrosion resistance of the TiAlSiN/Cr multilayer coatings firstly increased when the Cr layer thickness increased up to 21 nm, before decreasing with a further increase of Cr layer thickness. Our results show that the TiAlSiN/Cr multilayer coatings with the Cr layer thickness of 21 nm exhibit enhanced toughness, excellent erosion resistance, and corrosion resistance together with high hardness.