镁合金热喷涂Al_2O_3纳米陶瓷涂层性能研究Properties of Al_2O_3 based nanostructured ceramic coatings on magnesium alloy surface by thermal spraying
马壮;邹积峰;李智超;
摘要(Abstract):
采用氧乙炔火焰喷涂技术,在镁合金AZ31B表面制备Al2O3纳米陶瓷涂层。采用X射线衍射(XRD)、扫描电镜(SEM)分析复合陶瓷涂层的组成及组织形貌,并对其热震性能、致密性、耐磨性和耐蚀性进行测试。结果表明,热喷涂纳米陶瓷涂层中有AlTi3、Al2TiO5等新相生成,组织更为致密,颗粒熔化程度较高,涂层热震性能、致密性、耐磨性和耐蚀性明显优于热喷涂微米陶瓷涂层。热喷涂纳米陶瓷涂层热震次数可达40次,说明涂层结合强度较高,清漆封孔后,孔隙率为0,致密性和耐蚀性都达到最好。
关键词(KeyWords): 镁合金;热喷涂;纳米陶瓷涂层
基金项目(Foundation): 辽宁省教育厅创新团队项目(2009T044)
作者(Author): 马壮;邹积峰;李智超;
Email:
DOI: 10.14024/j.cnki.1004-244x.2010.04.019
参考文献(References):
- [1]侯根良,王汉功,杨晖,等.冷喷涂技术制备纳米涂层[J].兵器材料科学与工程,2003,26(2):49-51.
- [2]Cell M,Jordan E H,Sohn Y H,et a1.Development and imple-mentation of plasmas prayed nanostructured ceramic coatings[J].Surface and Coatings Technology,2001(146/147):48-54.
- [3]Song E P,Ahn J,Lee S,et al.Microstructure and wear resis-tance of nanostructured Al2O3-8wt%TiO2 coatings plasma-sprayed with nanopowders[J].Surface and Coatings Technolo-gy,2006,201(314):1309-1315.
- [4]魏璐,李京龙,李贺军.热喷涂纳米结构涂层的研究[J].焊接,2007(3):17-23.
- [5]周立忠,阎殿然,何继宁,等.热喷涂纳米陶瓷涂层的制备及性能[J].材料导报,2004,18(4):42-48.
- [6]Goberman D,Sohn Y H,Shaw L,et al.Microstructure devel-opment of Al2O3-13wt.%TiO2 plasma sprayed coatings derivedfrom nanocrystalline powders[J].Acta Materials,2002,50:1141-1152.
- [7]Luo H,Goberman D,Shaw L,et al.Indentation fracture be-havior of plasma sprayed nanostructured Al2O3-13wt.%TiO2coatings[J].Materials Science and Engineering:A,2003,346:237-245.
- [8]唐艳红,王继辉,等.一种新型无机耐烧蚀复合材料固化机理的研究[J].新材料新工艺,2005(4):25-28.
- [9]李广海,江安全,张立德.添加纳米A12O3陶瓷增韧和增强的影响[J].金属学报,1996,32(12):1286-1288.
- [10]时海芳,吕文涛,马壮,等.镁合金表面纳米Al2O3基陶瓷涂层的制备及其性能研究[J].材料保护,2008,41(8):49-51.
- [11]何臣,侯书恩.纳米材料在纳米热喷涂中的应用[J].湖北汽车工业学院学报,2005,19(1):27-29.
- [12]Kear B H,Strutt P R.Chemical processing and application of nanostructured materials[J].Nanostruct Material,1995(6):227-236.
- [13]刘润,赵剑锋,黄因慧,等.纳米复合陶瓷涂层激光熔覆的组织与耐磨性能[J].中国表面工程,2003,16(5):39-42.