翟长生,王迎春,解芳,翟群智,郑志祥

• 1:河南汉工机械再制造技术有限公司
• 2:河南工业大学机电工程学院
• 3:南阳理工学院机械与汽车工程学院
• 4:西安交通大学钱学森学院

摘要(Abstract)：

在GCr15基体表面制备了感应熔涂-等温淬火镍基涂层,并对其微观组织及摩擦学行为进行了研究。结果表明:高能火焰喷涂层的颗粒明显扁平化,涂层存在着大量的孔洞、夹杂和界面缺陷,呈现机械结合特征,涂层组织的主要为γ-Ni固溶体及其与其它元素形成的共晶体为主,还存在少量碳化物和硼化物硬质相;感应熔涂层明显致密化,形成了紧密的界面冶金结合,生成了大量的碳化物和硼化物硬质相。等温淬火熔涂层进一步致密化,晶粒明显细化,生成更多的陶瓷性质的强化相。相对于淬火GCr15钢,感应熔涂层及随后等温淬火熔涂层在稳定摩擦阶段具有更低的摩擦系数,分别比前者小了38.0%和52.7%,相对耐磨性分别是前者的1.70和2.91倍。相对熔涂层,淬火GCr15钢有着更低的抗磨粒磨损和粘着磨损能力;感应熔涂层以微犁磨削为主,粘着磨损并存;经等温淬火后的熔涂层以磨粒磨损为主导,比前两者具有更优异的抗磨粒磨损和粘着磨损的能力。

关键词(KeyWords)： 感应重熔;等温淬火;镍基合金涂层;微观组织;摩擦学行为

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51605230,51201060,51775169)

作者(Author): 翟长生,王迎春,解芳,翟群智,郑志祥

DOI: 10.13289/j.issn.1009-6264.2019-0227

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