在 Na2 SiO 3电解液体系下,添加不同含量的H 2 O 2,在铸造铝合金表面制得微弧氧化陶瓷层.采用SEM、AFM 分析陶瓷层表面形貌及粗糙度,并研究了H 2 O 2加入对所获陶瓷层的厚度、相组成的影响.随着电解液中 H 2 O 2的加入量增加,微弧氧化陶瓷层厚度减小,致密性增加,Al2 O 3相随之增加.SEM 及 AFM结果表明 H 2 O 2的加入可以改善陶瓷层表面质量,降低其粗糙度.
The ceramic coatings were obtained on casting aluminum alloy surface in Na2 SiO 3 electrolyte system containing H 2 O 2 by micro-arc oxidation.Microstructure and roughness analyses in combination with microscopic examinations have been performed in detail through atomic force microscope (AFM)and scanning electric mi-croscopy (SEM).Characteristics of the coating such as thickness and phase composition which were influenced by H 2 O 2 were investigated.The results showed that with increasing the H 2 O 2 concentration in the Na2 SiO 3 electrolyte,the thickness decreased,the compactness and Al2 O 3 increased.It is found by AFM and SEM that the coating surface quality was improved and the roughness was decreased which were due to addition of H 2 O 2 .
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%