Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8012506 | Materials Letters | 2018 | 15 Pages |
Abstract
Practical applications of molybdenum (Mo) and Mo-based alloy have been limited for their weak oxidation resistance properties under oxidizing environments. Anti-oxidation coating technology is a major solution for the improvement of oxidation resistance of Mo. In this study, titanium diboride (TiB2) was deposited as an anti-oxidation coating on pure molybdenum substrate from a gas mixture of TiCl4, BCl3 and H2 at 1000â¯Â°C by chemical vapor deposition (CVD). The result shows that good quality TiB2 thin coating has been grown on pure molybdenum and the thickness of the coating deposited at 1000â¯Â°C for 2â¯h reached 13â¯Î¼m. The TiB2 coating was found to have a typically columnar particle structure and the length of the columnar particle is 1-2â¯Î¼m. Meanwhile, TiB2 crystal has a preferential orientation growth in the (0â¯0â¯1) direction. The results of oxidation test reveal TiB2 coating formed on Mo substrate exhibits better oxidation resistance in air at 900â¯Â°C.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Xiaoxiao Huang, Shuchen Sun, Shuaidan Lu, Kuanhe Li, Ganfeng Tu, Jianxun Song,