Kinetics and diffusion studies in CA2 formation

✍ Scribed by M.M. Ali; S.J. Raina; V.K. Singh

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 237 KB
• Volume: 19
• Category: Article
• ISSN: 0008-8846
• DOI: 10.1016/0008-8846(89)90064-1

✦ Synopsis

The formation of CA 2 in the molar mix of CA and A occurs by diffusion of A into the CA matrix. The reaction is phase boundarycontrolled. The activation energy for CA,~ formation in the temperature range of 1350-1450 C is 33.40 Kcal mole "1. The activation ~'ree energy and activation entropy is found to be 83.26 Kcal mole "1 and 29.80 cal mole "1 K "1. Tl~e coefficients of interdiffusion have been calculated and the temperature dependence of diffusion coefficients obeys the relationship D = 49.562 x 10 -6 (-28 400 , ~ cm 2 sec-1

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