Journal
CURRENT APPLIED PHYSICS
Volume 12, Issue 1, Pages 284-290Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2011.06.023
Keywords
Micro-arc oxidation; Titanium alloy; Thermal emission; Bonding strength; Thermal shock resistance
Ask authors/readers for more resources
Ceramic thermal protection coatings on Ti6Al4V alloy were achieved by micro-arc oxidation (MAO) in the presence of Co(CH3COO)(2). The morphology, crystallographic structure and chemical composition of the coating were characterized by various techniques. The thermal emission of the coating was measured by Fourier transform spectrometer apparatus. The bonding strength between the coating and substrate was studied, together with the thermal shock resistance of the coating. The results indicate that the content of Co in the coating layer significantly affects its thermal emissivity. Higher concentration of Co(CH3COO)(2) in electrolytes leads to more Co ions into the coating, which enhances the emissivity of the coating. All the coatings show bonding strength higher than 10 MPa. In addition, the coating remains stable over 40 cycles of thermal shocking. The coating formed at 4 g/L Co(CH3COO)(2) displays an average spectral emissivity value more than 0.9 and bonding strength about 10.4 MPa. (C) 2011 Elsevier B. V. All rights reserved.
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