結構、力學以及摩擦學特性
(1. 重慶大學 材料科學與工程學院，重慶 400044；2. 重慶科技學院 冶金與材料工程學院，重慶 401331；
3. Teer Coatings Ltd., West Stone House, Berry Hill Industrial Estate, Droitwich, Worcestershire WR9 9AS, UK)
摘 要: 采用反應非平衡磁控濺射技術制備出一系列LY12鋁合金基CrTiAlN多層涂層，并通過X射線衍射儀、納米壓痕儀以及多功能摩擦磨損測試儀來研究CrTiAlN涂層的結構、力學以及摩擦學特性。結果表明：CrTiAlN涂層為以TiN0.9和CrN為主要組織取向的FCC結構，N2水平和襯底負偏壓對涂層的力學特性和粘附強度有顯著的影響。經(jīng)過優(yōu)化參數(shù)，在襯底偏壓−55V和中N2水平條件下，CrTiAlN涂層的結合強度為10 N，顯微硬度達到29.87 GPa。
關鍵字: CrTiAlN涂層；力學性能；結構特性；摩擦因數(shù)
CrTiAlN coatings on Al alloy deposited by sputtering
（1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;
2. School of Metallurgical and Materials Engineering,
Chongqing University of Science and Technology, Chongqing 400050, China;3. Teer Coatings Ltd., West Stone House, Berry Hill Industrial Estate, Droitwich, Worcestershire WR9 9AS, UK
）
Abstract:A series of CrTiAlN multi-layer coatings on LY12 Al alloy substrates were prepared using unbalanced reactive magnetron sputtering system. The structural, mechanical and tribological properties of coatings were studied by X-ray diffractometry, microhardness tester and multi-functional ball-on-disc tester. The results show that the CrTiAlN coatings belong to FCC structure consisting of TiN0.9 and CrN, and the N2 level and negative bias voltage have a significant effect on CrTiAlN multi-layer coatings. The adhesion strength of optimized CrTiAlN coatings is 10 N at −55 V and medium N2 level, and its microhardness value is about 29.87 GPa.
Key words: CrTiAlN coatings; mechanical property; structural property; friction coefficient
