Abstract

The article presents the results of tribological testing of a plasma-sprayed Al₂O₃, MgAl₂O₄ coating under sliding conditions without lubrication at a volume temperature of 20–600°C. The counterface materials were the alloys 316L(N)-IG, BrAZHNMts9-4-4-1 (aluminum bronze) used in the constriction of enhanced heat flux panels of the first wall and blanket module connectors of the ITER thermonuclear reactor. There was a significant increase in the friction coefficient and wear intensity at temperatures of T ≥ 250°C for both types of coatings. The main wear mechanism of oxide coatings was abrasive, which appeared after onset of brittle fracture and fatigue spalling areas on the surface coatings. Possible ways of reducing frictional forces in friction units with Al₂O₃, MgAl₂O₄ coatings are presented.

中文翻译：

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高温对无润滑滑动条件下等离子喷涂Al 2 O 3涂层摩擦学特性的影响

摘要

本文介绍了在20-600°C的体积温度下在无润滑条件下滑动条件下等离子喷涂的Al ₂ O ₃，MgAl ₂ O ₄涂层的摩擦学测试结果。相对材料是用于压缩ITER热核反应堆第一壁的热通板和毯式模块连接器的合金316L（N）-IG，BrAZHNMts9-4-4-1（铝青铜）。在T温度下，摩擦系数和磨损强度显着增加两种涂料的≥250°C。氧化物涂层的主要磨损机理是磨料，它是在表面涂层出现脆性断裂和疲劳剥落区域后出现的。提出了减少具有Al ₂ O ₃，MgAl ₂ O ₄涂层的摩擦装置中的摩擦力的可能方法。