Process for producing .alpha.-alumina fibers

Details Process for producing .alpha.-alumina fibers Process for producing .alpha.-alumina fibers

1994-05-25

1996-11-12

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264 66, 501 95, B28B 100

Patent

active

055737188

ABSTRACT:
.alpha.-Alumina fibers are produced by a sol-gel process using aluminum nitrate as a starting material. A reaction mixture including aluminum nitrate, water and aluminum particles is refluxed until the aluminum particles are completely dissolved to obtain an aluminum hydroxide sol. The aluminum hydroxide sol is then aged to increase the viscosity thereof, spun, dried and sintered to obtain .alpha.-alumina crystalline fibers.

REFERENCES:
patent: 3322865 (1967-05-01), Blaze
patent: 3953561 (1976-04-01), Shin
patent: 3983197 (1976-09-01), Mirsche et al.

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