| Title |
The Effect of Ball-Milling on Ni-Al Based Intermetallics Coating by the Heat of Molten Aluminum |
| Authors |
이한영(Han Young Lee); 조용재(Yong Jae Cho) |
| DOI |
https://doi.org/10.3365/KJMM.2014.52.2.123 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
intermetallics; coating; microstructure; activation analysis; ball-milling |
| Abstract |
Ball-milled Ni-Al powder compacts were synthesized by the heat of molten aluminum at 1073 K and were coated on an aluminum casting. The effects of ball-milling on the microstructure of the intermetallic coatings are investigated. The experimental results showed that remelting the aluminum casting around the coating by the heat released during the intermetallic reaction could be prevented by the ball-milling for reactant powders. Further, the coating reaction was preferentially achieved by diffusion. This might be attributed to the fact that the heat released during the intermetallic reaction was dispersed over a prolonged reaction time by the ball-milling. †(Received December 6, 2012) |