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Tracer diffusion of .sup.65./sup.Zn, .sup.110m./sup.Ag and .sup.88./sup.Y in QE22 metal matrix composite
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SYSNO ASEP 0322041 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Tracer diffusion of 65Zn, 110mAg and 88Y in QE22 metal matrix composite Title Difúze 65Zn, 110mAg and 88Y in QE22 kompozitu Author(s) Stloukal, Ivo (UFM-A)
Čermák, Jiří (UFM-A) RID, ORCIDSource Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 471, 1-2 (2009), s. 83-89Number of pages 7 s. Publication form WWW - WWW Language eng - English Country NL - Netherlands Keywords composite materials ; metal matrix composite ; diffusion Subject RIV BJ - Thermodynamics R&D Projects GA106/05/2115 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000265086300032 DOI 10.1016/j.jallcom.2008.03.085 Annotation Tracer diffusion of 65Zn, 110mAg and 88Y in QE22 metal matrix composite was measured by serial sectioning method in the temperature interval 646–728 K. In the case of the reinforced alloy, the effective diffusion coefficients Deff were obtained and interface diffusion coefficients D i in the interface boundaries were estimated. Both temperature dependences of Deff and D i were not Arrhenius-type. This feature was explained by the large difference in coefficients of the thermal expansion of the metal matrix and the reinforcement. In the case of 88Y diffusion in un-reinforced QE22 alloy, it was found that yttrium diffuses along dislocations that act as paths of rapid diffusion. Diffusivity of 88Y along dislocations, a2sDd, was estimated. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2009
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