以往将等离子喷涂层用于介电性能的研究较少.采用大气等离子喷涂在石墨表面制备了一系列Fe/Al2O3陶瓷涂层.采用表面分析技术研究了不同Fe/Al2O3含量涂层的微观结构和在8.2～12.4 GHz频率范围的介电性能,探讨了Fe含量对涂层相组成和微观结构以及介电性能的影响.结果表明:Fe/Al2O3陶瓷涂层中Fe粉和气孔分布均匀;随着Fe粉量的增加,颗粒热导率变大,涂层中未熔融颗粒减少,γ-Al2O3随之增加,气孔率逐渐下降;涂层的复介电常数随着Fe粉含量的增加而增大.
参考文献
| [1] | Yin, ZJ;Tao, SY;Zhou, XM;Ding, CX .Microstructure and mechanical properties of Al2O3-Al composite coatings deposited by plasma spraying[J].Applied Surface Science,2008(6):1636-1643. |
| [2] | Bartuli, C;Cipri, F;Valente, T .Thermal spraying and the fabrication of coatings with tailored electromagnetic properties[J].Inorganica Chimica Acta,2008(14/15):4077-4088. |
| [3] | F. Cipri;C. Bartuli;T. Valente;F. Casadei .Electromagnetic and Mechanical Properties of Silica-Aluminosilicates Plasma Sprayed Composite Coatings[J].Journal of Thermal Spray Technology,2007(5/6):831-838. |
| [4] | Begard, M;Bobzin, K;Bolelli, G;Hujanen, A;Lintunen, P;Lisjak, D;Gyergyek, S;Lusvarghi, L;Pasquale, M;Richardt, K;Schlafer, T;Varis, T .Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications[J].Surface & Coatings Technology,2009(20/21):3312-3319. |
| [5] | Bolelli G;Rauch J;Cannillo V et al.Microstructural and Tribological Investigation of High-Velocity Suspension Flame Sprayed (HVSFS) Al2O3 Coatings[J].Journal of Thermal Spray Technology,2009,18(01):35-48. |
| [6] | Yugeswaran, S;Selvarajan, V;Seo, D;Ogawa, K .Effect of critical plasma spray parameter on properties of hollow cathode plasma sprayed alumina coatings[J].Surface & Coatings Technology,2008(1/2):129-136. |
| [7] | 范群波,王鲁,王富耻.等离子喷涂金属/陶瓷颗粒的瞬态碰撞压力研究[J].北京理工大学学报,2003(02):168-171,193. |
| [8] | Thorpe M L;Richter H J.A pragmatic analysis and comparison of the HVOF proceas[A].Orlando Florida,USA,1992:137-146. |
| [9] | R. C. Dykhuizen;M. F. Smith;D. L. Gilmore;R. A. Neiser;X. Jiang;S. Sampath .Impact of high velocity cold spray particles[J].Journal of Thermal Spray Technology,1999(4):559-564. |
| [10] | 李鹏,周万城,李玉琴,徐洁,罗发.Ni/ZrO2复合材料力学及介电性能研究[J].稀有金属材料与工程,2008(11):1934-1937. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%