Self-diffusion of carbon in NbC (in Japanese)
Journal Article
·
· Nippon Kinzoku Gakkai Kaiho, v. 37, no. 10, pp. 1065-1068
OSTI ID:4407086
Self-diffusion coefflcients of carbon in a carbide of niobium was measured in the temperature range 1800 to 2200 deg C, using radioactive tracer techniques. The self-diffusion coefficients can be expressed by D* = 0.56 exp (-- 87,500/RT) (cm/sup 2/sec). Comparing the present results with the chemical diffusivities obtained by the carbide layer growth method, it is shown that the relations between self-diffusivities and chemical diffusivities of carbon in the carbides of transition metals can be explained qualitatively on the assumption that carbon diffuses in the carbide by a vacancy mechanism. (auth)
- Research Organization:
- Osaka Univ.
- NSA Number:
- NSA-29-010632
- OSTI ID:
- 4407086
- Journal Information:
- Nippon Kinzoku Gakkai Kaiho, v. 37, no. 10, pp. 1065-1068, Journal Name: Nippon Kinzoku Gakkai Kaiho, v. 37, no. 10, pp. 1065-1068; ISSN NKNKA
- Country of Publication:
- Japan
- Language:
- Japanese
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