超音速等离子喷涂纳米结构Al_2O_3-TiO_2喂料涂层性能研究

Study on Properrties of Coatings Fabricated by Supersonic Plasma Spraying With Nanostructured Al_2O_3-TiO_2 Feedstock

采用特殊的工艺 ,制备了可用于热喷涂的纳米结构 Al2 O3- Ti O2 喂料 ,并采用超音速等离子喷涂技术制备了涂层。涂层的结合强度和显微硬度与美国产相同成分的 Nanox TM2 6 13P纳米喂料制备的涂层基本相同。喷涂过程中存在相的转变和晶粒长大现象。

With a kind of special process,nanostructured Al_2O_3-TiO_2 feedstock for thermal spray was developed,and coatings were fabricated by supersonic plasma spraying technology.Comparing these coatings with the coatings prepared with nanox^(TM)2613P nanostructured feedstock made in American,two coatings have similar bonding strength and microhardness.Change of phase and growth of grain occur during thermal spraying process.