HfB2 coatings on refractory composite substrates
Abstract
This project will focus on applying boride-based coatings (primarily HfB2 and secondarily ZrB2) onto heat sensitive substrates that consist of a C/SiC matrix. C/C is considered as a substrate of secondary interest. The coating process will be atmospheric plasma spraying of powders that display an appropriate particle size distribution. Technical challenges revolve around the mostappropriate powder specification and procurement for the specific substrate of interest. Sprayprocessing will be examined with diagnostic measurements of the particle characteristics; specifically: particle flux distribution in the plasma stream, and particle size temperature distributions during the spray process. Thus, an understanding of the essential manufacturingconditions that achieves boride-based coatings (e.g., HfB2, ZrB2) will be established.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 24, 2019
- Source ID
- FA23861814119
Entities
People
- Christopher C Berndt
Organizations
- Air Force Office of Scientific Research
- Swinburne University of Technology
- United States Air Force