Effect of substrate surface roughness on the characteristics of CrN hard film
Effect of substrate surface roughness on the characteristics of CrN hard film
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DOI：
10.1016/0254-0584(95)01636-9
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发表时间：
1996-03
影响因子：
4.6
通讯作者：
S. Lee;W. Ho;F. Lai
中科院分区：
文献类型：
--
作者：
S. Lee;W. Ho;F. Lai
采用无规则电弧物理气相沉积法在高速钢试样表面镀上CrN硬膜。通过浸渍和阳极极化腐蚀试验考察了基体表面粗糙度对腐蚀行为的影响。通过对试样进行高温加热，研究了氮化铬膜的抗氧化性能。并对其磨损和粘附性能进行了评价。结果表明，光滑的基体表面不仅可以提高涂层试样的附着力，降低摩擦系数，而且可以提高涂层试样的耐蚀性。涂层材料的耐磨性也比未涂层材料有所提高。CrN在700℃左右开始氧化转化为cr2o3，此时膜的硬度下降。
Specimens of high speed steel were coated with CrN hard film by the random arc physical vapor deposition process. The effect of surface roughness of substrates on the corrosion behavior was examined by immersion and anodic polarization corrosion tests. High temperature heating of test coupons was executed to study oxidation resistance of the chromium nitride film. Wear and adhesion behaviors were evaluated as well. The results revealed that a smooth substrate surface not only provided better adhesion as well as lower friction coefficient of the coated specimen but also improved its corrosion resistance. Wear resistance of coated material was also improved as compared with uncoated material. Oxidation and conversion of CrN to Cr2O3started at a temperature of about 700 °C, where film hardness deteriorated.