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Tribological Behavior of $Al_{2}O_{3}-MoO_{2}-SiO_{2}$ Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
| Content Provider | MDPI |
|---|---|
| Author | Zeng, Diping Liu, Zhiyi Zou, Lihua Wu, Haijiang |
| Copyright Year | 2021 |
| Description | In order to enhance wear properties of Al-Zn-Mg-Cu alloy parts, $Al_{2}O_{3}-MoO_{2}-SiO_{2}$ composite ceramic coatings are formed on Al-Zn-Mg-Cu alloy by the DC micro-arc oxidation (MAO) method in the silicate electrolyte with sodium molybdate. Effects of sodium molybdate concentration on the structure characteristics and wear resistance of the composite ceramic coatings are analyzed by scanning electron microscopy, X-ray diffraction and the wear test, respectively. Analyses indicate that the composite coating consists of different states of $Al_{2}O_{3}$, $MoO_{2}$ and mullite phase. With the addition of molybdate in the electrolyte, the morphology and structure are changed. The tribological behavior is greatly affected by the surface characteristics and hardness of the coatings. The composite coatings formed by adding 3 g/L of sodium molybdate electrolyte have the best wear resistance. |
| Starting Page | 915 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings11080915 |
| Journal | Coatings |
| Issue Number | 8 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-07-30 |
| Access Restriction | Open |
| Subject Keyword | Coatings Micro-arc Oxidation Composite Ceramic Coating Wear Property Tribological Behavior |
| Content Type | Text |
| Resource Type | Article |
