High Temperature Oxidation Resistant Coatings
Abstract
The feasibility of chemically vapor depositing hafnium oxide and zirconium oxide onto rhenium substrates as potential oxidation resistant materials was investigated. Deposition of the oxide directly is not feasible on materials which oxidize rapidly since direct deposition requires subjecting these materials to an oxidizing environment prior to deposition. Deposition of the oxide was accomplished by first depositing the metal carbide and then oxidizing it. Hard, dense continuous coatings of hafnium carbide which showed good bond strength were achieved. Post coating heat treatment results in a good metallurgical bond between the carbide and the substrate. It has been demonstrated that hafnium carbide/oxide is orders-of-magnitude more oxidation resistant that rhenium or tungsten. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1984
- Accession Number
- ADA143633
Entities
People
- J. T. Harding
- R. B. Kaplan
- R. H. Tuffias