采用国产和进口两种大气等离子体喷涂设备,在不同功率下喷涂制备了ZrO2-8%(质量分数)Y2O3纳米结构热障涂层.在大气环境箱式电阻炉中1100～1250℃下对涂层进行了高温煅烧处理,采用扫描电子显微镜观察分析了涂层煅烧前后的微观组织变化,通过X射线衍射分析了涂层煅烧前后的相组成变化.结果表明:涂层经高温煅烧后,熔化团聚体大颗粒中新形成的纳米晶发生了明显长大,但临界熔化状态的团聚大颗粒中的小颗粒无明显变化;采用国产设备较低功率制备的纳米结构氧化锆涂层相组成为四方相和立方相,以四方相为主,经高温煅烧后四方相向立方相转变,且随煅烧温度和时间的增加而增加;采用进口设备较高功率制备的涂层全部为立方相,煅烧前后无相变发生.
参考文献
| [1] | Chen H.;Ding CX. .Nanostructured zirconia coating prepared by atmospheric plasma spraying[J].Surface & Coatings Technology,2002(1):31-36. |
| [2] | 张玉娟,孙晓峰,金涛,赵乃仁,管恒荣,胡壮麒.大气等离子喷涂的YSZ纳米热障涂层的微观结构[J].金属学报,2003(04):395-398. |
| [3] | 宫文彪,孙大千,孙喜兵,刘威.等离子喷涂纳米团聚体粉末的熔化特性研究[J].材料热处理学报,2007(04):125-129. |
| [4] | R. Soltani;E. Garcia;T. W. Coyle;J. Mostaghimi;R. S. Lima;B. R. Marple;C. Moreau .Thermomechanical Behavior of Nanostructured Plasma Sprayed Zirconia Coatings[J].Journal of Thermal Spray Technology,2006(4):657-662. |
| [5] | Liang B;Ding CX;Liao HL;Coddet C .Phase composition and stability of nanostructured 4.7 wt.% yttria-stabilized zirconia coatings deposited by atmospheric plasma spraying[J].Surface & Coatings Technology,2006(14/15):4549-4556. |
| [6] | LIU Chun-bo,YU Lian-sheng,JIANG Xian-liang.Particle growth mechanism of nanocrystalline zirconia powder during high temperature heat treatment[J].中国有色金属学会会刊（英文版）,2007(05):1022-1027. |
| [7] | Wang Na;Zhou Chungen;Gong Shengkai et al.[J].Ceramics International,2007,33:1075-1081. |
| [8] | Jaeyun M;Hanshin C;Hyungjun K et al.[J].Surface and Coatings Technology,2002,155:1-10. |
| [9] | Zhou Chungen;Wang Na;Xu Huibin .[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2007,452-453:569-574. |
| [10] | 周春根,王娜,宫声凯,徐惠彬.热处理对纳米氧化锆热障涂层热物性的影响[J].北京航空航天大学学报,2004(10):949-952. |
| [11] | Brandon J R;Tayor R .[J].Surface and Coatings Technology,1991,46:75-90. |
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