ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A process for production of near-net-shape mullite-matrix ceramic composites at ≤1300°C has been achieved by reaction-bonding Al2O3, silicon, mullite seeds, and eutectics of Al2O3–SiO2–mixed-rare-earth oxide. The fusion temperature of the eutectic composition utilized is 1175°C. This liquid phase facilitates silicon oxidation, mullitization, and sintering. Mullite phase develops with low residual Al2O3 when 7.5 wt% mixed-rare-earth oxide and 5 wt% mullite seeds are used. The final sinter is 〉90% of theoretical density, 〉90% mullite (by quantitative XRD), and suffers 2.2% sintering shrinkage.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.2002.tb00343.x
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