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阐述了反应等离子喷涂 (RPS)方法的基本思想 .利用气体隧道等离子喷枪 ,通过RPS方法在Q2 35钢基底上成功制备了氮化钛涂层 .检测了TiN涂层在不同载荷下的显微硬度 ,结果显示TiN涂层具有明显的硬度压痕尺寸效应 ,在高载荷下加工硬化效应较弱 .XRD ,TEM及HRTEM等分析表明 ,通过RPS方法制备得到了纳米TiN涂层 ,涂层由直径约为 5 0— 70nm的TiN晶粒及非晶TiN所组成 .
The basic idea of the reactive plasma spray (RPS) method is described.The titanium nitride coating was successfully prepared on the Q235 steel substrate by gas plasma spraying gun using RPS method.The microhardness , The results show that the TiN coating has obvious indentation size effect and the work hardening effect is weak under high load.The analysis of XRD, TEM and HRTEM shows that the nano TiN coating is prepared by RPS method, 5 0- 70nm TiN grains and amorphous TiN composition.