Tailorable thermal expansion in leucite‐pollucite materials derived from geopolymers for environmental barrier coatings
Abstract
The K[AlSi2O6]‐Cs[AlSi2O6] pseudo‐binary system was synthesized by geopolymer crystallization. The thermal expansion properties of these materials were studied by in situ high‐temperature X‐ray diffraction to characterize thermal expansion behavior for potential application as environmental barrier coatings. Tailorable thermal expansion through changing cation stoichiometry allowed reduced thermal expansion mismatch with SiCf/SiC composites compared to rare‐earth‐based coatings.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 02, 2021
- Source ID
- 10.1111/jace.17630
Entities
People
- Andrew J. Steveson
- Waltraud M. Kriven
Organizations
- Air Force Office of Scientific Research
- University of Illinois Urbana–Champaign