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采用阴极离子镀在H13钢表面制备了TiAlSiN涂层,通过扫描电镜、X射线衍射仪、原子力显微镜分析了涂层表面-界面形貌、物相和三维表面微观形貌。利用EDS面扫描分析了磨痕表面化学元素分布,讨论了高温对涂层摩擦磨损性能的影响。结果表明,TiAlSiN涂层表面主要元素由Ti、Al、Si和N组成,主要物相为(Ti,Al)N,未发现Si3N4相;高温氧化后生成的致密氧化膜Al2O3提高了涂层高温抗氧化性,Si O2降低了涂层表面摩擦因数,结构疏松的Ti O2易导致涂层破裂和剥落;TiAlSiN涂层表面粗糙度高于基体表面粗糙度,磨痕表面Ti和Al元素出现贫集区,表明涂层被磨穿;在700、800和900℃下,涂层表面摩擦因数均在0.3左右,在700℃时磨损机制主要为氧化磨损和粘着磨损,在800℃和900℃时主要为氧化磨损,伴随着少量粘着磨损和磨粒磨损。
TiAlSiN coating was prepared by cathodic ion plating on the surface of H13 steel. The surface morphology, phase morphology and three-dimensional surface morphology of the coating were analyzed by scanning electron microscopy, X-ray diffraction and atomic force microscopy. The distribution of chemical elements on the surface of wear scar was analyzed by EDS surface scanning. The effect of high temperature on the friction and wear properties of the coating was also discussed. The results show that the main elements on the surface of TiAlSiN coating are composed of Ti, Al, Si and N, the main phase is (Ti, Al) N and no Si3N4 phase is found. The dense oxide film Al2O3 formed after high temperature oxidation improves the high temperature resistance Oxidation and Si O2 reduce the friction coefficient of the coating surface. The loosely structured Ti O2 easily causes the coating to crack and peel off. The surface roughness of the TiAlSiN coating is higher than the surface roughness of the substrate. , Indicating that the coating is worn through. The friction coefficient of the coating surface is about 0.3 at 700, 800 and 900 ℃, and the wear mechanism is mainly oxidative wear and adhesive wear at 700 ℃. At 800 ℃ and 900 ℃, Oxidation wear, with a small amount of adhesive wear and abrasive wear.