Evaluation of erosive wear resistance of TiN coatings by a slurry jet impact test
Evaluation of erosive wear resistance of TiN coatings by a slurry jet impact test
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DOI：
10.1016/j.wear.2005.09.030
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发表时间：
2006-07
期刊：
影响因子：
5
通讯作者：
Y. Iwai;T. Miyajima;T. Honda;T. Matsubara;K. Kanda;S. Hogmark
中科院分区：
文献类型：
--
作者：
Y. Iwai;T. Miyajima;T. Honda;T. Matsubara;K. Kanda;S. Hogmark
本文提出使用新型固体颗粒冲击试验（浆料喷射）来快速评估薄、单层或多层涂层的磨损性能。通过浆料喷射，1.2μm 的氧化铝颗粒以垂直于在不同基材温度下沉积在高速钢基材材料上的 TiN 薄 PVD 涂层的高速冲击。由于涂层具有比基体材料高得多的耐磨性，因此当涂层被穿透时，磨损率显着增加至高速钢材料的较高水平。这用于涂层磨损评估的量化。给出并讨论了耐磨性的排序以及通过纳米压痕测试测量的涂层表面硬度的相关性，以及涂层的形态和结构。在最高基体温度下沉积的 TiN 被证明具有最高的耐磨性，尽管它的硬度相对较低。 TiN涂层的磨损率随晶粒取向的变化而变化，即在高温沉积中占主导地位的{111}取向比{100}取向表现出更高的耐磨性，这与解理断裂行为相对应。因此，在评估涂层和涂层材料时，可以推荐将其作为筛选测试。
In this paper, it is proposed to use a new type of solid particle impact test (slurry jet) to swiftly evaluate wear properties of thin, single layered or multilayered coatings. By the slurry jet, 1.2μm alumina particles were impacted at high velocity perpendicular to thin PVD coatings of TiN deposited on high speed steel substrate materials under various substrate temperatures. Since the coatings have a much higher wear resistance than the substrate material, the wear rate increases significantly to the higher level of the HSS material when the coatings are penetrated. This is utilized in the quantification of the assessment of coating wear. A ranking of wear resistance and correlations to the coating surface hardness measured by nano-indentation tests, and coating morphology and structures are given and discussed. The TiN deposited under the highest substrate temperature proved to have the highest wear resistance although it had a relatively low hardness. The wear rate of the TiN coatings varies with the orientation of grains, that is, the {111} orientation that dominates for the high temperature deposition shows a higher wear resistance than the {100} orientation, which corresponds with the cleavage fracture behavior. Thus, it can be recommended as a screening test when evaluating coatings and coated materials.