钛合金表面耐冲蚀Zr(AlCu)N涂层的结构与性能

为了提高钛合金TC6的耐冲蚀性能,采用磁控溅射技术在钛合金上沉积不同Zr(A1Cu)N涂层,考察了涂层的硬度、韧性和耐冲蚀性能,采用场发射扫描电镜(FESEM),X射线衍射(XRD)和X射线光电子能谱(XPS)分析其微观结构.结果发现:向ZrN涂层中加入20at％Cu后(Zr0.8Cu0.2N),显著提高了涂层的韧性,...

Research on Structure and Properties of Zr(AlCu)N Erosion-resistant Coatings on Titanium Alloy Surface

Different Zr(AlCu)N coatings are deposited onto titanium alloy TC6 substrates by reactive magnetron sputtering in order to improve the erosion resistance.The morphology and microstructure are studied by using field emission scanning electron microscopy(FSEM),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).The coatings hardness and toughness are measured by using nano-indentation method and Vickers indentation method,respectively.The erosion rates are measured and the characteristic damage features are identified.The results show that ZrN coating alloyed with Al and Cu can improve the erosion resistance of TC6 effectively.ZrCuN with 20at%Cu can increase the coating toughness by 2 times,whereas because of low hardness,the erosion resistance of ZrCuN can not be improved effectively.ZrAlN with 23at% Al has higher hardness and better toughness,resulting in better erosion resistance than ZrCuN,ZrAlN coating shows brittle erosion feature in erosion test.ZrAlCuN coating with 19at%Al and 2at% Cu has the highest hardness and best toughness,and shows the best erosion resistant performance.