Abstract
Zirconia and hafnia based thermal barrier coating materials were produced by industrial prototype electron beam-physical vapor deposition (EB-PVD). Columnar microstructure of the thermal barrier coatings were modified with controlled microporosity and diffuse sub-interfaces resulting in lower thermal conductivity (20-30% depending up on microporosity volume fraction), higher thermal reflectance (15-20%) and more strain tolerance as compared with standard thermal barrier coatings (TBC). The novel processed coating systems were examined by various techniques including scanning electron microscopy (SEM), X-ray diffraction, thermal conductivity by laser technique, and hemispherical reflectance.
Original language | English (US) |
---|---|
Pages (from-to) | 1975-1985 |
Number of pages | 11 |
Journal | Journal of Materials Science |
Volume | 39 |
Issue number | 6 |
DOIs | |
State | Published - Mar 15 2004 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering