Zirconium-based coatings in highly stressed rolling contacts as alternative solution to DLC and ta-C coatings
Zirconium-based coatings in highly stressed rolling contacts as alternative solution to DLC and ta-C coatings
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高应力滚动接触中的锆基涂层作为 DLC 和 ta-C 涂层的替代解决方案
DOI：
10.1016/j.wear.2010.08.004
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发表时间：
2010
期刊：
影响因子：
5
通讯作者：
M. Woydt
中科院分区：
文献类型：
--
作者：
C. Manier;H. Ziegele;J. Barriga;J. Goikoetxea;M. Woydt
DLC、a- c和ta-C薄膜涂层的抗滑滚性能在过去几年中有了很大的提高，但在(a)温度稳定性和(b)沉积后的初始表面粗糙度方面仍有改进的空间。本文提出了一种新的涂层-衬底系统，与最近开发的DLC涂层相比，在液体润滑剂存在的情况下，在基准测试程序中施加滑动滚动条件。其中一种zr基薄膜涂层可以在初始赫兹接触压力高达P0max=3500MPa和混合/边界条件下至少120°C的低摩擦系数油温下承受至少100万次循环，或者在P0max=2940MPa下承受1000万次循环。相比之下，在Pmax=2600/2940MPa的赫兹接触压力下，一些新开发的DLC涂层在RT下（其中一些也在120°C油温下）至少具有1000万次的抗滑滚性能。一般来说，Zr基薄膜涂层不需要特殊的油配方，并且Zr（C，N）具有适合批量生产纳米层的直线涂层结构。
The slip-rolling resistance of DLC, a-C and ta-C thin film coatings was improved considerably in the last years, but there is still room for improvements in relation to (a) the temperature stability and (b) initial surface roughness after deposition. This paper presents a novel coating-substrate system in comparison to recently developed DLC coatings in a bench-mark test procedure exerting slip-rolling conditions in the presence of liquid lubricants. One of the Zr-based thin film coatings can withstand at least 1 million cycles under initial Hertzian contact pressures of up to P0max=3500MPa and oil temperatures of at least 120°C associated with low coefficients of friction under mixed/boundary conditions or ten million of cycles under P0max=2940MPa. In comparison, some of the newly developed DLC coatings are slip-rolling resistant for at least up to 10 million cycles at RT (some of them also at 120°C oil temperature) under Hertzian contact pressures of Pmax=2600/2940MPa. In general, Zr-based thin film coatings do not require special formulated oil formulations and Zr(C,N) bear on a straight coating architecture suited for mass production with nanosized layers.