Surface hardened carbon material and process of manufacturing

Details Surface hardened carbon material and process of manufacturing Surface hardened carbon material and process of manufacturing

2005-05-17

2005-05-17

Turner, Archene (Department: 1775)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Limited to treatment of surface or coated surface

C264S430000, C264S434000, C264S447000

Reexamination Certificate

active

06893601

ABSTRACT:
A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of oxides of boron and boron nitride in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material that is resistant to oxidation to temperatures of 900° C., enabling machined components to be utilized for weeks at that temperature. The carbon material is also stable in inert or vacuum environments to temperatures in the range of 1500 to 2000° C., enabling its use as aluminum evaporative boats and the like.

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English abstract of KR 20902051101 published Jun. 2002.

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