Composite article and related method

Details Composite article and related method Composite article and related method

2011-05-10

2011-05-10

Silverman, Stanley (Department: 1736)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S625000, C423S629000

Reexamination Certificate

active

07939050

ABSTRACT:
A method for making a composite includes combining a strengthening agent and an aluminum compound to form a first solution; precipitating an Al(OH)3gel from the first solution, wherein strengthening agent particles are dispersed within the gel; washing the Al(OH)3gel with an alcohol; contacting the Al(OH)3gel with a salt; drying the Al(OH)3gel to form a powder; calcining the powder to convert Al(OH)3to Al2O3; and sintering the powder to form a composite article comprising beta double prime alumina.

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Kaliszewski et al., “Alcohol Interaction With Zirconia Powders”, J. Am. Ceram. Soc., vol. 73, No. 6, pp. 1504-1509, 1990.
PCT International Search Report dated Aug. 20, 2009.

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