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Improved Mechanical Properties and Corrosion Resistance of Mg-Based Bulk Metallic Glass Composite by Coating with Zr-based Metallic Glass Thin Film
| Content Provider | MDPI |
|---|---|
| Author | Tsai, Pei-Hua Lee, Chung-I Song, Sin-Mao Liao, Yu-Chin Li, Tsung-Hsiung Jang, Jason Shian-Ching Chu, Jinn P. |
| Copyright Year | 2020 |
| Description | Mg-based bulk metallic glass (BMG) and its composite (BMGC) can be excellent candidates as lightweight structure materials, but lack of anti-corrosion ability may restrict their application. In order to enhance the natural weak point of Mg-based BMGC, a 200-nm thick Zr-based metallic glass thin film (MGTF) ((Zr53Cu30Ni9Al8)99.5Si0.5) was applied and its mechanical properties as well as its corrosion resistance were appraised. The results of a 3-point bending test revealed that the flexural strength of the Mg-based BMGC with 200-nm thick Zr-based MGTF coating can be greatly enhanced from 180 to 254 MPa. We propose that the Zr-based MGTF coating can help to cover any small defects of a substrate surface, provide a protecting layer to prevent stress concentration, and cease crack initiation from the specimen surface during bending tests. Moreover, the results of anti-corrosion behavior analysis revealed a similar trend between the Mg-based BMG, Mg-based BMGC, and Mg-based BMGC with Zr-based MGTF coating in 0.9 wt.% sodium chloride solution. The readings show a positive effect with the Zr-based MGTF coating. Therefore, the 200-nm thick Zr-based MGTF coating is a promising solution to provide protection for both mechanical and anti-corrosion behaviors of Mg-based BMGC and reinforce its capability as structure material in island environments. |
| Starting Page | 1212 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings10121212 |
| Journal | Coatings |
| Issue Number | 12 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-12-12 |
| Access Restriction | Open |
| Subject Keyword | Coatings Coatings and Films Mg Alloy Bulk Metallic Glass Composites Thin Film Coating Mechanical Properties |
| Content Type | Text |
| Resource Type | Article |
