Journal
JOURNAL OF THERMAL SPRAY TECHNOLOGY
Volume 21, Issue 5, Pages 1091-1098Publisher
SPRINGER
DOI: 10.1007/s11666-012-9803-9
Keywords
bonding strength; cold spraying; magnesium coating; substrate preheating
Categories
Funding
- China Scholarship Council
- Northwestern Polytechnical University
- Ministry of Education of China [NECT-08-0463]
- Program for New Century Excellent Talents in University [B08040]
Ask authors/readers for more resources
A poor bonding strength between the magnesium coating and substrate limits magnesium coating's application. This paper aims at improving the bonding strength between the coating and substrate using substrate preheating. Aluminum substrates were heated to 100, 200 and 300 A degrees C by a flame nozzle prior to cold spraying. The effects of substrate preheating on the microstructure and bonding strength were studied. The deformation behavior of single particles was simulated by a commercial software ABAQUS, and observed using SEM. The results show that substrate preheating can increase the bonding strength significantly. The bonding strength increased from 3.3 +/- A 0.8 to 11.6 +/- A 0.5 MPa when the substrate temperature increased from room-temperature to 200 A degrees C. The fracture analyses show that the coating fracture occurred within the coating when the substrate was preheated at 200 A degrees C.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available