Abstract

In this paper, we studied the wear of a plasma thin-film coating (PTFC) of the Si–O–N–C system deposited on high-speed steel of the W6Mo5Cr4V2 type. The tests were performed using a friction machine according to the “disk-indenter” scheme under dry friction conditions by the adhesive and abrasive wear mechanism. A steel indenter was used to simulate adhesive wear and a corundum indenter was employed to simulate abrasive wear. The positive effect of the coating on the wear resistance of the sample surface was established. The obtained positive effect has been shown to be achieved as a result of a combination of four factors: high coating hardness, phase hardening of the base material, reduction of surface roughness, and partial prevention of adhesion bonding of contacting bodies. Within the depth of the material hardening zone formed upon the PTFC deposition, the wear resistance of W6Mo5Cr4V2 steel was shown to increase by 3.2 times when paired with a steel indenter and 2.4 times when paired with a corundum indenter. We concluded that a PTFC thickness of 0.8–1 μm is sufficient to increase the wear resistance of high-speed steel products and to provide an acceptable level of coating adhesion.

中文翻译：

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高速钢上等离子薄膜涂层的磨损特性

摘要

在本文中，我们研究了沉积在W6Mo5Cr4V2型高速钢上的Si–O–N–C系统的等离子薄膜涂层（PTFC）的磨损。在“干式摩擦”条件下，通过粘合剂和磨料磨损机制，使用根据“盘压头”方案的摩擦机进行测试。使用钢压头模拟粘合剂的磨损，使用刚玉压头模拟磨料的磨损。建立了涂层对样品表面耐磨性的积极影响。通过四个因素的组合，已经显示出获得的积极效果：高涂层硬度，基材的相硬化，表面粗糙度的减小以及部分防止接触体的粘合。在PTFC沉积时形成的材料硬化区的深度内，与钢压头配对时，W6Mo5Cr4V2钢的耐磨性提高了3.2倍，与刚玉压头配对时，耐磨性提高了2.4倍。我们得出的结论是，PTFC厚度为0.8–1μm足以增加高速钢产品的耐磨性并提供可接受水平的涂层附着力。