| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Advanced Coatings for Wear and Corrosion Protection
|
| Presentation Title |
Metallurgical and Mechanical Bonding of Al2O3 on Mold Steel and Wear Behavior: Laser Cladding vs. Thermal Spray |
| Author(s) |
Sumin Song, Taebum Kim, Sungjin Kim, Kyuntaek Cho |
| On-Site Speaker (Planned) |
Sumin Song |
| Abstract Scope |
As ceramics are considered as one of the most significant materials because of its electrical and thermal properties, the interest in ceramic-metal bonding technology has been highlighted. In plastic injection industry, “Rapid Heating” technique is a useful way to improve the productivity by reducing process cycle time, so stacking ceramics on the injection mold is necessary. For this technique, processes such as thermal spray and laser cladding have been usually used to build ceramic coatings on metals. In this study, an experimental study was carried out to find out the differences in bonding mechanisms and its following mechanical and tribological properties. Ceramic hardness of laser cladding was over 2400Hv and that of thermal spray was 1100Hv. Diverse microstructures were distinguished by OM and SEM and “Dilution” was observed by EPMA analysis. Wear test showed that laser cladded ceramic layer had lower wear rate which could be attributed to higher hardness. |