Mechanical properties of TiNx/Cr1−xN thin films on plasma nitriding-assisted AISI H13 steel
Mechanical properties of TiNx/Cr1−xN thin films on plasma nitriding-assisted AISI H13 steel
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DOI：
10.1016/j.surfcoat.2004.08.142
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发表时间：
2005-04
影响因子：
5.4
通讯作者：
Sang-Yul Lee
中科院分区：
文献类型：
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作者：
Sang-Yul Lee
研究了离子渗氮和PVD硬质涂层复合处理对热作工具钢表面性能的影响。采用非平衡磁控溅射法在H13钢表面制备了TiN、CrN单层涂层和TiN/CrN多层涂层，并对其硬度、结合力和抗冲击性能等氧化性能和力学性能进行了对比研究。TiN/CrN复合涂层的硬度值为36 GPa（TiN为26 GPa，CrN为22 GPa），结合力为43 N，比其它涂层具有更好的上级结合力。根据冲击试验结果，所有试样在室温下显示出几乎相同的冲击特性，但值得注意的是，在550 °C下，双相TiN/CrN涂层比其他试样显示出相对较少的内聚和粘合失效，这表明双相TiN/CrN涂层似乎是所有测试的涂层方法中最合适的涂层方法。
In this paper, the effects of duplex treatment consisting of plasma nitriding and PVD hard coating on the surface properties of hot working tool steel were investigated. Three different coatings (TiN, CrN single layer coating and TiN/CrN multi-layer coating) were deposited on pre-plasma nitrided AISI H13 steel using unbalanced magnetron sputtering method and their oxidation and mechanical properties such as hardness, adhesion and impact resistance were comparatively examined. The duplex TiN/CrN coating showed the hardness value of 36 GPa (TiN: 26 GPa and CrN: 22 GPa) and much superior adhesion property (Lc=43 N) to other specimens. From the impact test results, all specimens displayed almost identical impact characteristics at room temperature, but it was noted that the duplex TiN/CrN coating showed comparatively less cohesive and adhesive failures than other specimens at 550 °C, suggesting that the duplex TiN/CrN coating seemed to be the most suitable coating method among all those tested.