采用活性燃烧高速燃气(AC-HAVF)喷涂技术在AISI 1045低碳钢基体上制备了一种新型Fe40Cu8Cr15Mo14C15B6Y2非晶合金涂层,通过XRD、SEM、摩擦磨损试验机等研究了涂层的微观结构及其摩擦磨损行为.研究表明,Fe40Cu8Cr15Mo14C15B6Y2涂层的厚度可达400 μm,涂层基本由非晶相组成,且与基体结合良好,结构致密,孔隙率为1.2％.该Fe基非晶涂层具有较高的维氏硬度达1038 HV,极低的磨损量,约为基体AISI 1045低碳钢的1/4.在干摩擦条件下,涂层易发生层状剥落磨损.同时,摩擦界面的局部接触部位产生高的闪温,使涂层表面形成氧化膜,随着摩擦过程中氧化的不断进行,当氧化膜生长到某一临界厚度时,由于其本身脆性会最终破裂,形成氧化磨屑,进一步加剧涂层的磨损.
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