航空材料学报2016，Vol.36Issue(5)：44-51,8.DOI:10.11868/j.issn.1005-5053.2016.5.008
激光快速制备Tix Aly-TiN复合涂层
Laser Rapid Preparation Tix Aly-TiN Composite Coating
摘要
Abstract
The Tix Aly-TiN composite coatings were in-situ synthesized on Ti-6Al-4V alloy surface by using laser nitriding method. The phase composition, microstructure and microhardness were invesitigated. The results show that the coating is mainly composed of TiN reinforced particles and Tix Aly intermetal matrix. With increase of the depth from the coating surface, the volume fraction of TiN phase decreased and that of Tix Aly intermetal matrix increased. Moreover, the size of the TiN phase and the microhardness value of the coat-ing decreased with increase of the depth from the coating surface. The microcracks and pores cannot be found in the coating. The thick-ness of coating is uniform, and forms a good metallurgical combination between coating and substrate. Along the direction of laser melt-ing depth, the elements of N and Al distribute evenly. The microhardness of coating increases significantly, and gradually reduces from coating to the substrate.关键词
激光气体氮化/Tix Aly-TiN/微观硬度/显微组织Key words
laser gas nitriding/Tix Aly-TiN/microhardness/microstructure分类
矿业与冶金引用本文复制引用
靳振西,张成成,邓国坚,张显程,王正东..激光快速制备Tix Aly-TiN复合涂层[J].航空材料学报,2016,36(5):44-51,8.基金项目
国家自然科学基金(51575183) （51575183）
