Process for microwave sintering boron carbide

Details Process for microwave sintering boron carbide Process for microwave sintering boron carbide

1993-03-18

1993-10-12

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 25, 264 56, C04B 3556

Patent

active

052522679

ABSTRACT:
A method of microwave sintering boron carbide comprises leaching boron carbide powder with an aqueous solution of nitric acid to form a leached boron carbide powder. The leached boron carbide powder is coated with a glassy carbon precursor to form a coated boron carbide powder. The coated boron carbide powder is consolidated in an enclosure of boron nitride particles coated with a layer of glassy carbon within a container for microwave heating to form an enclosed coated boron carbide powder. The enclosed coated boron carbide powder is sintered within the container for microwave heating with microwave energy.

REFERENCES:
patent: 4880578 (1989-11-01), Holcombe et al.
patent: 5164130 (1992-11-01), Holcombe et al.

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