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Kinetics of precipitation of carbon in molybdenum at about 250°C

✍ Scribed by K Yoshioka; H Kimura

Publisher
Elsevier Science
Year
1975
Weight
995 KB
Volume
23
Category
Article
ISSN
0001-6160

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✦ Synopsis

Kinetics of the precipitition of carbon in molybdenum at about 250% are studied in detail by rcsistirity measurements. The rate of this prccipitstion stage is controlled by the diffusion of carbon atoms. The aotivation energy for carbon diffusion at this temper8tum range is determined to be 1.2 eV, which is 8pp~iably smaller than the activation energy reported so far for carbon diffusion measured at high temperatures, about 1.7 eV.

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Internal friction and electrical resistivity measurements associated with the removal of carbon from solution in iron have indicated that in irradiated specimens the carbon is trapped at defects before it precipitates. The binding energy of carbon to these defect traps was measured by calorimetry a