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研究了用自蔓延高温合成技术获得的碳化铬金属陶瓷熔覆层在两体干摩擦状态下的磨料磨损性能。结果表明,该熔覆层具有致密的网状碳化物结构,在硬性磨料的切削作用下,磨屑自碳化物网间的软基体组织开始形成,而以撕裂方式终止于碳化物网壁处,因而其磨损机制为显微切削+微观撕裂。据此,本文提出将撕裂形成功作为磨料磨损能量的第4分量的建议,对试验结果作出了合理的解释。
The abrasive wear behavior of chromium carbide cermet coating obtained by self-propagating high temperature synthesis technique under dry friction condition of two bodies was studied. The results show that the cladding layer has a dense network of carbide carbides. Under the action of hard abrasive, the wear debris begins to form from the soft matrix between the carbide network and ends with the tear of the carbide network Department, so its wear mechanism for micro-cutting + micro-tearing. Based on this, the paper proposes that the tearing force should be the fourth component of abrasive wear energy, and the test results should be reasonably explained.