Sintering of Mullite-Containing Materials: I, Effect of Composition

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Journal of the American Ceramic Society (Online)

DOI:https://doi.org/10.1111/j.1151-2916.1982.tb10359.x· OSTI ID:1109097

Sacks, Michael D. ^[1]; Pask, Joseph A. ^[1]

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1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering and Materials and Molecular Research Division

Sintering behavior of mullite-containing powders was studied over a range of chemical compositions (Al₂0₃/Si0₂ ratio). Densification measurements were made for both liquid phase-containing and solid state systems. Small amounts of liquid phase were observed to have a significant effect on densification rate. A linear relationship was obtained between the percent of theoretical density and the logarithm of time for compositions in the range 73-75 wt% Al₂O₃. Currently available models for intermediate stage sintering kinetics were considered to be inadequate for these systems. Lastly, grain boundary transport or diffusion appeared to be the primary mechanism of densification.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• DOE Contract Number: AC02-05CH11231; AC03-76SF00098
• OSTI ID: 1109097
• Report Number(s): LBL--11857part1/2
• Journal Information: Journal of the American Ceramic Society (Online), Journal Name: Journal of the American Ceramic Society (Online) Journal Issue: 2 Vol. 65; ISSN 1551-2916
• Publisher: American Ceramic Society
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE