| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thin Films and Coatings: Properties, Processing and Applications
|
| Presentation Title |
Ultra-fast Synthesis of Superhard Borides of W, Re, and WRe (20%Re) Alloys Using Electrochemical Boriding |
| Author(s) |
Merve Uysal Komurlu, Cafer Melik Ensar Acemi, Bibhu Sahu, Ali Erdemir, Ibrahim Karaman |
| On-Site Speaker (Planned) |
Merve Uysal Komurlu |
| Abstract Scope |
Several boriding processes, such as pack, paste, and plasma boriding, create thick boride layers on ferrous and non-ferrous metals but are often slow, wasteful, and costly. Ultrafast boriding in a borax-based molten salt overcomes these issues by diffusing boron into the workpiece to form thick layers quickly. We used this process to synthesize thick (i.e., 12 and 62 µm) boride layers on Re, W, and a WRe (20% of Re) alloy at 1000°C for 1 hour. Structural, chemical, and mechanical characterization of the boride layers produced on these metals and their alloy confirmed that resultant boride layers were structurally very dense, uniform, and stochiometric. The mechanical hardness of the boride layer formed on Re was 26 GPa, while on W 33 GPa. The boride layer formed on WRe alloy exhibited a duplex layer consisting of mostly of WB4 and ReB2 phases with hardness values of as high as 44 GPa. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Surface Modification and Coatings, Characterization |