等离子喷涂纳米Al_2O_3-TiO_2-SiO_2-SiC涂层抗热震性能  

Thermal shock resistance of plasma-sprayed nano-Al_2O_3-TiO_2-SiO_2-SiC coatings

作　　者：孙海全[1] 张建新[1] 阎殿然[1] 赵春晓[1] 何继宁[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《金属热处理》2009年第5期46-49,共4页Heat Treatment of Metals

摘　　要：将纳米结构Al2O3、TiO2、SiO2、SiC粉体经液相喷雾造粒的方法,制备出适合等离子喷涂的球形复合粉体,采用等离子喷涂技术制备出含纳米结构的陶瓷涂层。通过水淬法,将涂层试样分别经500、700、900和1100℃加热并保温10min,然后投入冷水中以测量其抗热震能力,通过宏观和SEM照片加以观察,分析其失效的机理。试验结果表明,该纳米结构涂层在较低温度(<700℃)具有优良的抗热震性能。The spheroidal particles powder was fabricated by fog spraying particle forming from nanostructure Al2O3,TiO2,SiO2 and SiC powder and the nanostructure coatings on steel substitute were made by plasma spraying. The coating sample were heated and kept 10 min at the temperature of 500,700,900 and 1 100 ℃ respectively, and then quenched in water to check the property of the coatings against thermal shock by macroseopical and SEM observation. The results show that the nanostructure coatings have excellent thermal shock resistance at temperature lower 700℃

关 键 词：纳米结构 等离子喷涂 抗热震性能 

分 类 号：TG174.453[金属学及工艺—金属表面处理]