THE BORON-CARBON SYSTEM. Final Technical Report, May 1, 1960-April 30, 1961 | Zendy

Rodney P. Elliott | Zendy

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THE BORON-CARBON SYSTEM. Final Technical Report, May 1, 1960-April 30, 1961

Author(s) -

Rodney P. Elliott

Publication year - 1961

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/4003641

Subject(s) - eutectic system , boron , boron carbide , carbon fibers , solubility , materials science , carbide , metallurgy , chemistry , microstructure , composite material , organic chemistry , composite number

The boron--carbon equilibrium diagram was determined by x-ray, metallographic, and thermal analysis of sintered and arc-cast alloys. A single carbide having a range of solubility from approximately 9 to 20 at.% carbon and melting congruently exists in the system. The terminal solubility of carbon in boron is 0.1-0.2 at.%. The freezing reaction between boron and the carbide is a degenerate peritectic --eutectic reaction at the composition and melting temperature of elemental boron; there is a eutectic reaction at 29 at.% carbon and 2375 deg C. No allotropy of boron was observed. (auth

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