高温真空钎焊WC-Co-NiP功能复合涂层的滑动磨损行为

Sliding Wear Behavior of High-Temperature Vacuum-Brazed WC-Co-NiP Functional Composite Coatings.

作者信息

Muntean Roxana, Pascal Dragoș-Toader, Kazamer Norbert, Mărginean Gabriela, Șerban Viorel-Aurel

机构信息

Department of Materials and Manufacturing Engineering, University Politehnica of Timișoara, Piața Victoriei 2, 300006 Timisoara, Romania.

Westphalian Energy Institute, Westphalian University of Applied Sciences Gelsenkirchen Bocholt Recklinghausen, Neidenburgerstr. 43, 45897 Gelsenkirchen, Germany.

出版信息

Materials (Basel). 2021 Dec 23;15(1):88. doi: 10.3390/ma15010088.

DOI:10.3390/ma15010088

PMID:35009231

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8746236/

Abstract

The present study aimed to investigate the tribological behavior of high-temperature vacuum-brazed WC-Co-NiP functional coatings deposited on 16MnCr5 case hardening steel. Dry sliding wear resistance was evaluated using a non-conformal ball-on-disk arrangement, at room temperature against 100Cr6 and WC-Co static partners, respectively. Morphological, microstructural, and chemical composition analyses showed a complex, phased structure composed of tungsten carbide, nickel, and hard cobalt-based η-structure. In the testing conditions, the coefficient of friction against 100Cr6 and WC-Co counterparts entered a steady-state value after approximately 1000 m and 400 m, respectively. The wear track analysis revealed phenomena of particles trapped between the sliding bodies, as well as gradual removal of asperities. The calculations of the wear rates proved that the values were strongly influenced by properties of the sliding system, such as crystal structure, stress discontinuities, hardness, and material homogeneity.

摘要

本研究旨在研究高温真空钎焊在16MnCr5渗碳钢上的WC-Co-NiP功能涂层的摩擦学行为。采用非共形球-盘装置分别在室温下与100Cr6和WC-Co静态配对材料进行干滑动磨损试验，评估其耐磨性能。形态、微观结构和化学成分分析表明，涂层具有由碳化钨、镍和硬钴基η结构组成的复杂相结构。在测试条件下，与100Cr6和WC-Co配对材料的摩擦系数分别在大约1000 m和400 m后进入稳态值。磨损轨迹分析揭示了滑动体之间存在颗粒截留现象以及微凸体逐渐被去除的现象。磨损率计算结果表明，这些值受到滑动系统性能的强烈影响，如晶体结构、应力不连续性、硬度和材料均匀性。