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The e.m.f. measurements were made on the cell,(This article is not displayable. Please see full text pdf.) \ oindentby using a Co-B alloy containing about 20 at%B. The e.m.f. values were used in calculation of the thermodynamic properties of Co3B and Co2B. The calculated thermodynamic properties are as follows:(This article is not displayable. Please see full text pdf.) \ oindentand(This article is not displayable. Please see full text pdf.) \ oindentIn the diagram of the e.m.f. vs temperature, the intersection of a line for the system Co+Co3B with a line for the system Co+Co2B yielded a eutectoidal temperature of 845°C.
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Ômori et al. (1976) studied this question.
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