Debye temperature of nanocrystalline Fe-Cr alloys obtained by mechanical alloying

被引：6

作者：

Dubiel, S. M. ^{[1
]}

Costa, B. F. O. ^{[2
]}

Cieslak, J. ^{[1
]}

Batista, A. C. ^{[2
]}

机构：

[1] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland

[2] Univ Coimbra, Dept Phys, CFisUC, P-3004516 Coimbra, Portugal

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 649卷

关键词：

Fe-Cr alloys; Mechanical alloying; Debye temperature; Mossbauer spectroscopy; X-ray diffraction; SIGMA-PHASE; MOSSBAUER SPECTROMETRY; TRANSFORMATIONS;

D O I：

10.1016/j.jallcom.2015.07.067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series on nanocrystalline Fe100-xCrx alloys prepared by mechanical alloying was investigated with Xray diffraction (XRD), scanning electron microscopy (SEM) and Mossbauer spectroscopy (MS) techniques. XRD was used to structurally characterize the samples whereas MS permitted phase analysis as well as determination of the Debye temperature, theta(D). Concerning the latter, an enhancement relative to bulk theta(D)-values was revealed in the range of similar to 40 <= x <= similar to 50. In a sample of Fe55.5Cr44.5 two phases were detected viz. (1) crystalline and magnetic with theta(D) = 572 (56) K and (2) amorphous and paramagnetic with theta(D) = 405 (26) K. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1246 / 1252

页数：7

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