A simple method for the preparation of plasma-sprayable powders based on ZrO2 |
| |
Authors: | Parvati Ramaswamy S Seetharamu K B R Varma K J Rao |
| |
Affiliation: | (1) Materials Technology Division, Central Power Research Institute, 560 094 Bangalore, India;(2) Materials Research Centre, Indian Institute of Science, 560 012 Bangalore, India |
| |
Abstract: | Plasma-sprayable powders of calcia, magnesia and yttria-stabilized zirconia have been prepared by using polyvinyl alcohol binders. The powders have been characterized for sprayability by spray coating on steel plates previously coated with an NiAl bond coat. The suitability of these coatings for thermal barrier applications have been examined. Thermal barrier and related properties, along with phase stability and mechanical properties, have been found to be good. Failure of the thermal barrier coating has been observed to occur at the interface between the bond coat and the substrate, due to the formation of a pile-up layer consisting of Fe-Zr-Al-O compound. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|