Abstract

In this paper, we study the effect of temperature and time of annealing on the structural-phase state and tribomechanical properties of Ni–Cr–Al (40%–10%–50%)-based coatings deposited by the high-speed metallization method. The annealing of the coatings is shown to lead to the precipitation of intermetallic phases NiAl, Ni₂Al₃, Ni₃Al, and Al₃Ni, an increase in the hardness and wear resistance of the coatings, and an increase in their porosity. We developed a mathematical model that describes the dependence of the intensity of mass wear of coatings during friction without lubricant on the temperature and time of annealing. The maximal wear resistance of coatings was established after annealing at 630–640°C and an exposure time of 40–50 min.

中文翻译：

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温度和退火时间对高速金属化沉积Ni-Cr-Al基伪合金涂层耐磨性的影响

摘要

在本文中，我们研究了温度和退火时间对高速金属化方法沉积的Ni-Cr-Al（40％–10％–50％）基涂层的结构相态和摩擦力学性能的影响。涂层的退火表明会导致金属间相NiAl，Ni ₂ Al ₃，Ni ₃ Al和Al ₃的析出Ni，增加涂层的硬度和耐磨性，并增加其孔隙率。我们开发了一个数学模型，该模型描述了在没有润滑剂的摩擦过程中涂层的整体磨损强度与退火温度和退火时间的关系。涂层在630–640°C退火和40–50分钟的暴露时间后，具有最大的耐磨性。