EFFECTS OF THERMAL SPRAY COATING COMPOSITION AND MICROSTRUCTURE ON COATING RESPONSE AND SUBSTRATE PROTECTION AT HIGH-TEMPERATURES

Authors
BLUNI ST MARDER AR
Citation
St. Bluni et Ar. Marder, EFFECTS OF THERMAL SPRAY COATING COMPOSITION AND MICROSTRUCTURE ON COATING RESPONSE AND SUBSTRATE PROTECTION AT HIGH-TEMPERATURES, Corrosion, 52(3), 1996, pp. 213-218
Citations number
18
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Corrosion → ACNP
ISSN journal
00109312
Volume
52
Issue
3
Year of publication
1996
Pages
213 - 218
Database
ISI
SICI code
0010-9312(1996)52:3<213:EOTSCC>2.0.ZU;2-W
Abstract
Three thermal spray coatings were subjected to high-temperature corros ion experiments to characterize the operative corrosion mechanism(s) a nd to examine the effects of coating composition and microstructure. S amples were placed In air and sulfur dioxide (SO2) at 600 degrees C fo r exposure times up to 1,000 h. The ability of a thermal spray coating to protect its substrate effectively was found to depend upon its ten dency to form protective oxides and upon the cross-sectional distance from the coating surface to the substrate via fast diffusion paths suc h as splat boundaries and voids.