| 引用本文: | 李加林,赵学书,宋宏甲,钟向丽,王金斌.过渡层TiAlN的力学性能与微观结构对AlCrSiN涂层宏观力学性能的影响∗[J].中国表面工程,2021,34(2):41~48 |
| Li Jialin,Zhao Xueshu,Song Hongjia,Zhong Xiangli,Wang Jinbin.Effect of Mechanical Properties and Microstructure of Interlayer TiAlN on Macroscopic Mechanical Properties of AlCrSiN Coating[J].China Surface Engineering,2021,34(2):41~48 |
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| 摘要: |
| AlCrSiN 多元硬质涂层具有优异的力学性能,在刀具领域有广泛应用前景。 然而,如何在基底上制备出力学性能优异的 AlCrSiN 涂层有待进一步研究。 基于电弧离子镀技术,在硬质合金基底上沉积了不同 Ti / Al 原子比的 TiAlN 过渡层,并在其上沉积了 AlCrSiN 涂层,研究了过渡层 TiAlN 的微观结构(晶面取向、晶粒尺寸、致密度等)对功能层 AlCrSiN 力学性能的影响。 Ti-Al-N 固溶相的择优取向为(200)。 随着 Ti 含量的增加,(200)衍射峰宽化,晶粒细化,致密程度提高,硬度增加。 Ti / Al 原子比为 2. 75 时,TiAlN 晶粒尺寸为 9. 549 nm,其上制备的 AlCrSiN 硬度值达到 3 139. 6 HV,并且涂层与基底间的结合力高达 92 N。 细化(200)取向的 TiAlN 过渡层晶粒可以有效提高其上 AlCrSiN 涂层的硬度以及涂层与硬质合金基底的结合力。 研究成果对提高功能层 AlCrSiN 的力学性能及涂层刀具的寿命有一定的指导意义。 |
| 关键词: Ti / Al 原子比 TiAlN/ AlCrSiN 涂层 晶粒尺寸 过渡层 结合力 |
| DOI：10.11933/j.issn.1007-9289.20210121001 |
| 分类号:TG156;TB114 |
| 基金项目:国家自然科学基金资助项目(51872251,11875229,51902275) |
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| Effect of Mechanical Properties and Microstructure of Interlayer TiAlN on Macroscopic Mechanical Properties of AlCrSiN Coating |
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Li Jialin, Zhao Xueshu, Song Hongjia, Zhong Xiangli, Wang Jinbin
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School of Materials Science and Engineering, Xiangtan University, Xiangtan 411100 , China
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| Abstract: |
| AlCrSiN multiple hard coating has excellent mechanical properties and has a wide application prospect in the tool field. However, how to prepare AlCrSiN coatings with excellent mechanical properties on the substrate needs to be further studied. The tran- sition layer between the substrate and AlCrSiN coating has an important effect on the mechanical properties of AlCrSiN. The effects of the microstructure (crystal orientation, grain size, relative density, etc) of the interlayer TiAlN on the mechanical properties of the function layer AlCrSiN were studied. TiAlN transition layers with different Ti / Al atomic ratios were deposited on cemented carbide sub- strates by arc ion plating, and AlCrSiN coating was deposited on TiAlN transition layer. The experiment results show that the preferred orientation of Ti-Al-N solid solution phase is (200). With the increase of Ti content, the (200) diffraction peaks broadens, the grain refines, the density and the hardness increases. When Ti / Al atomic ratio is 2. 75, TiAlN grain size is 9. 549 nm, and the hardness of AlCrSiN prepared on it reaches 3 139. 6 HV, and the adhesion force between coating and substrate is up to 92 N. Refining the grains of the TiAlN interlayer with ( 200) orientation can effectively improve the hardness of the AlCrSiN function layer and the adhesion strength between the function layer and the cemented carbide substrate. The research result has a guiding significance to improve the mechanical properties of functional layer AlCrSiN and increasing the life of coating tools. |
| Key words: Ti / Al atomic ratio TiAlN/ AlCrSiN coating grain size interlayer adhesion force |
