Processing and Deposition of Nanocrystalline Oxide Composites for Thermal Barrier Coatings
Abstract
This report describes the synthesis and thermal stability of nanocrystalline oxide composites for thermal barrier coating applications. Nanocomposite powders were coated onto nickel-based substrates using alumina gel both as an interlayer and as an adhesive additive in subsequent Al2O3-Y2O3-ZrO2 coatings. Prior to coating of the nanocomposite powders, bond coats were applied to the nickel substrates by plasma spraying. The effects of alumina content and pretreatment conditions on the thermal stability of the coatings were investigated. Thermal gravimeric analysis and optical microscopy experiments were performed to better understand the mechanism of failure in the thermal barrier coatings and determine the optimal coating composition and pretreatment conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2001
- Accession Number
- ADA392792
Entities
People
- Jackie Y. Ying
- Justin T. Mccue
Organizations
- Massachusetts Institute of Technology