ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The mechanisms of formation of activated states upon diffusion of impurity interstitialatoms in metals have been identified, which allows formulation of the theoretical criterion forreliability of corresponding experimental data. This criterion is valid for almost all experimentalresults gained using precise techniques for bcc, fcc, and hcp metals. In case of hydrogen, oxygen,and nitrogen, most adequate are the models of potential diffusion barrier that are based on theelasticity theory. For carbon and boron, a less energy-taking mechanism is realized which involvesthe electron system rearrangement in a crystal during the diffusion jump. The accuracy of thetheoretical criterion is in line with the capacities of modern precision techniques
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.138.119.pdf
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