Thermodynamic Domains of the Various Solid Deposits in the B‐C‐H‐Cl Vapor System

1 January 1976

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 123 (1) , 136-140
https://doi.org/10.1149/1.2132747

Abstract

Calculations have been made of the equilibrium conditions under which chemical deposition of from mixtures takes place. Pure is mainly obtained for gas‐phase mixtures in which and. The maximum yield is obtained in the range 1675°–2075°K for the initial composition , , . The dependence of the hydrogen partial pressure on the equilibrium composition is discussed. At high temperatures with a large excess of hydrogen, the tendency is to form gaseous and instead of condensed species. With decreasing the amount of hydrogen, graphite begins to deposit under ratios. At lower temperatures the equilibrium content of increases as the ratio falls. The results of the calculations are confirmed by experimental data.

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