-
摘要：本文采用脉冲电镀法在耐高温镍基上制备Ni-Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al -Gd、Ni-Mo-Al-Pr、Ni-Mo-Al-Sm复合镀层，研究了不同浓度下Er、La、Gd、Pr、Sm几种稀土分别对Ni-Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al-Gd、Ni-Mo-Al-Pr、Ni-Mo-Al-Sm复合镀层的形貌及其镀层中Al、Mo及稀土本身含量的影响，且用扫描电镜对及电子能谱仪对Ni-Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al-Gd、Ni-Mo-Al-Pr、Ni-Mo-Al-Sm复合镀层的形貌、组成及组分含量进行了表征。结果表明，在Ni-Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al-Gd、Ni-Mo-Al-Pr、Ni-Mo-Al-Sm复合镀层中Ni-Mo-Al-La镀层中的Al含量较高，且在当镀液中La浓度为0.3g/L时，得到的Ni-Mo-Al-La镀层中Al含量达到2.24%的最高值；在Ni- Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al-Gd、Ni-Mo-Al-Pr、Ni-Mo-Al-Sm复合镀层中Ni-Mo -Al-La镀层中Mo的含量较高，且在当镀液中La浓度为0.2g/L时得到的Ni-Mo-Al-La镀层中Mo含量达到70.21%的最高值；分别在Ni-Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al-Gd、Ni-Mo-Al-Pr、Ni-Mo- Al-Sm复合镀层中Er、La、Gd、Pr、Sm的含量都随着该稀土自己本身在镀液中浓度的增加而增加；在Ni-Mo-Al-Er、Ni-Mo-Al-La、Ni-Mo-Al-Gd、Ni-Mo -Al-Pr、Ni-Mo-Al-Sm复合镀层中Ni-Mo-Al-Pr镀层最平整，其次依次是Ni-Mo-Al-La、Ni-Mo-Al-Sm、Ni-Mo-Al-Er、Ni-Mo-Al-Gd镀层。22999
- 上一篇：邻炔酰胺基苯甲酸酯的合成研究
- 下一篇：UV固化水性聚氨酯树脂的合成与固化研究
毕业论文关键词：热障涂层 耐高温 复合镀层 电沉积 脉冲电镀
Abstract：Preparation of Ni-Mo-Al-Er resisting nickel base paper in the pulse plating , Ni-Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo-Al-Pr, Ni-Mo-Al- Sm composite coatings were studied at different concentrations Er, La, Gd, Pr, Sm , respectively, for several rare Ni-Mo-Al-Er, Ni-Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo -Al-Pr, Ni-Mo-Al-Sm composite coating morphology and coating influence of Al , Mo , and rare-earth content itself , and by scanning electron microscopy and electron spectroscopy of Ni-Mo-Al-Er, Ni-Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo-Al-Pr, morphology of Ni-Mo-Al-Sm composite coating composition and component content were characterized . The results show that the Ni-Mo-Al-Er, Ni-Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo-Al-Pr, Ni-Mo-Al-Sm composite coating Ni-Mo- Al-La Al content in the coating layer is higher, and La in the bath when the concentration of 0.3g / L , the resulting Ni-Mo-Al-La Al content of the coating of 2.24% of the highest value ; the Ni-Mo -Al-Er, Ni-Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo-Al-Pr, Ni-Mo-Al-Sm composite coating of Ni-Mo-Al-La coating of Mo higher levels , and La in the bath when the concentration is the highest value of Mo content of 70.21% 0.2g / L obtained when the Ni-Mo-Al-La coating ; respectively Ni-Mo-Al-Er, Ni- Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo-Al-Pr, Ni-Mo-Al-Sm composite coating Er, La, Gd, Pr, Sm as the rare earth content are themselves increasing the concentration of the bath increases; Ni-Mo-Al-Er, Ni-Mo-Al-La, Ni-Mo-Al-Gd, Ni-Mo-Al-Pr, Ni-Mo-Al-Sm composite coating Ni-Mo-Al-Pr coating the formation , followed by followed by Ni-Mo-Al-La, Ni-Mo-Al-Sm, Ni-Mo-Al-Er, Ni-Mo-Al-Gd coating.
Keywords: Thermal barrier coatings Temperature Composite coating Electrodeposition Pulse plating
目 录
1 引言 1
1.1 Ni-Mo合金 1
1.1.1 机械合金化 1
1.1.2 离子束技术 1
1.1.3 电沉积法 1
1.1.4 电沉积法制备 Ni-Mo 合金镀层的发展现状 2
1.2稀土在脉冲复合镀中的应用 2
1.3 Al在粘结层中的应用 3
1.4 脉冲复合镀的介绍 3
1.4.1 脉冲复合镀的电沉积机理 3
1.4.2 影响复合镀层性能的因素 4
1.5脉冲复合镀的分类及工艺研究现状 4
1.5.1 高硬度耐磨性复合镀层 4