AFM and Mössbauer spectrometry investigation of the nanocrystallization process in Fe–Mo–Cu–B rapidly quenched alloy
作者： M Pavuk , M Miglierini , M Vujtek , M Mashlan , R Zboril
DOI: 10.1088/0953-8984/19/21/216219
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摘要: In this paper, the effect of heat treatment on development nanocrystallites in rapidly quenched Fe79Mo8Cu1B12 alloy is investigated. The surface morphology examined using non-contact mode atomic force microscopy (AFM). results are compared with those obtained by transmission Mossbauer spectroscopy (TMS), conversion electron spectrometry (CEMS) and x-ray diffraction (XRD). It was found that sample not fully amorphous even as-quenched state. Minor amounts bcc-Fe grains were detected wheel side ribbon-shaped samples while no indications crystalline phase observed bulk. crystallization onset after annealing at 410 ◦ C, when nanograins quite well developed. More intense evidenced higher temperatures, content increases progressively. second crystallization, discussed present characterized occurrence additional phases, appears 650 C. We suggest a model assuming drastic change size primarily formed temperature as proved XRD. increase induces formation number particles, which form large irregular agglomerates (80- 130 nm height), accordance AFM data. (Some figures article colour only electronic version)
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