Growth of a layer of W6Co7 phase in systems with participation of phases containing cobalt |
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| Authors: | V V Skorokhod V P Titov M M Churakov |
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| Affiliation: | 1. Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev
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| Abstract: | Growth kinetics for a layer of W6Co7 at the interfaces tungsten-cobalt and tungsten-melts based on copper and tin containing cobalt at 1200 °C are studied. It is established that rate constant for growth of this layer in the system with participation of tin (kSn) is much greater than in the system with copper (kCu). Dependences are determined for these constants on cobalt activity in the melt (aCo): kCu(m2/sec) = = 1.72 · 10?15(aCo ? 0.221) + 2.99 · 10?14 (aCo ? 0.221)2; kSn(m2/sec) = 1.8 · 10?14 (aCo ? 0.221) + + 9.077 · 10?12 (aCo ? 0.221)3. |
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