Tribological Properties of Carbon Tool Steel after Plasma Electrolytic Nitrocarburizing

IF 3.3 Q2 ENGINEERING, MANUFACTURING Journal of Manufacturing and Materials Processing Pub Date : 2023-11-05 DOI:10.3390/jmmp7060197

Tatiana Mukhacheva, Sergei Kusmanov, Ivan Tambovskiy, Pavel Podrabinnik, Alexander Metel, Roman Khmyrov, Mikhail Karasev, Igor Suminov, Sergey Grigoriev

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Abstract

The effect of plasma electrolytic nitrocarburizing on the wear resistance of carbon tool steel in friction couples with hardened steel and lead-tin bronze is considered in order to study the mechanism and type of wear, as well as the influence of structural and morphological characteristics of the surface on them. The microgeometry of friction tracks and its change with an increasing duration of friction tests are analyzed. The equilibrium roughness is determined, which is optimal for the friction couple and ensures minimal wear. The optimal values of the plasma electrolytic nitrocarburizing parameters, which provide the lowest values of the friction coefficient and wear rate, have been determined. The phase and elemental composition of the surface layer was studied using X-ray diffraction analysis and EDX analysis. The relationship of the microstructure of the nitrocarburized layer of tool steel with the friction coefficient and weight wear is established.

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碳素工具钢等离子体电解氮碳共渗后的摩擦学性能

研究了淬硬钢与铅锡青铜摩擦副中等离子体电解氮碳共渗对碳素工具钢耐磨性的影响，研究了磨损机理、磨损类型以及表面组织形态特征对磨损的影响。分析了摩擦轨迹的微观几何形状及其随摩擦试验时间增加的变化规律。平衡粗糙度是确定的，这是最理想的摩擦副，并确保最小的磨损。确定了摩擦系数和磨损率最低的等离子体电解氮碳共渗参数的最佳值。利用x射线衍射分析和EDX分析研究了表面层的物相和元素组成。建立了工具钢氮碳渗层组织与摩擦系数和重量磨损的关系。

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