Alumina-mullite-zirconia composites .1. Colloidal processing and phase-formation characteristics
SCIE
SCOPUS
- Title
- Alumina-mullite-zirconia composites .1. Colloidal processing and phase-formation characteristics
- Authors
- Jang, HM; Cho, SM; Kim, KT
- Date Issued
- 1996-10-01
- Publisher
- CHAPMAN HALL LTD
- Abstract
- A boehmite-silica-zirconia precursor powder with a uniform spatial distribution of constitutive phases was prepared from the corresponding ternary sol by compressing the electrical double layer (EDL) without altering the magnitude of the surface potential at a pH of 3.5. Both the rheological data and the calculated potential energy of interaction indicated that the mixed ternary sol formed weakly coagulated units in a shallow potential energy well after the compression of EDL at a pH of 3.5. The effects of alpha-Al2O3 seeding on the phase-formation characteristics were then systematically examined. It was observed that the alpha-Al2O3 seeding facilitated the formation of alpha-Al2O3 but that it suppressed the growth of mullite in the alumina-mullite-zirconia composite. These observations were attributed to the epitaxial effect of alpha-Al2O3 seeds which preferentially induced the formation of corundum phase over mullite formation.
- Keywords
- POLYCRYSTALLINE MULLITE; TRANSFORMATION; DENSIFICATION; CERAMICS; CREEP; GELS; SIZE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21477
- DOI
- 10.1007/BF00355909
- ISSN
- 0022-2461
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS SCIENCE, vol. 31, no. 19, page. 5083 - 5092, 1996-10-01
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- There are no files associated with this item.
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