Phase relationships in the La-Fe-Sb system at 773 K
- 1. Institute of Materials Science, Guangxi University, Nanning, Guangxi 530004 (China) and Key Laboratory of Nonferrous Metal Materials and New Processing Technology, Guangxi University, Ministry of Education, Nanning, Guangxi 530004 (China)
- 2. Key Laboratory of Nonferrous Metal Materials and New Processing Technology, Guangxi University, Ministry of Education, Nanning, Guangxi 530004 (China)
- 3. Institute of Materials Science, Guangxi University, Nanning, Guangxi 530004 (China)
- 4. Shenzhen Key Laboratory of Special Functional Materials, Shenzhen 518060 (China)
- 5. College of Material and Engineering, Shenzhen University, Shenzhen 518060 (China)
Description
The isothermal section of the phase diagram of the La-Fe-Sb ternary system at 773 K has been investigated mainly by X-ray powder diffraction with the aid of metallographic analysis and electron probe microanalysis techniques. Two ternary compounds Fe4LaSb12 and LaFe2Sb2 have been confirmed and LaFe2Sb2 is a new ternary compound which was found in this system at 773 K. This isothermal section consists of 12 single-phase regions, 23 two-phase regions and 12 three-phase regions. According to the results of experiment, the homogeneity range of ε(FeSb) phase extended from about 44 to 46 at.% Sb, the maximum solid solubility of La in ε phase is about less than 1 at.% La at 773 K. The solubilities for the other single-phase regions were not observed. The structure type for LaFe2Sb2 is Ga2S3-type (sp. gr. Cc (No. 9), a = 0.45518 nm, b = 0.77737 nm, c = 0.84207 nm, β = 128.3946 deg.). FeLaSb2 and La3Sb2 have not been observed at this isothermal section
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2007.02.026Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2007.02.026;
- PII
- S0925-8388(07)00394-5;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 456
- Journal Issue
- 1-2
- Journal Page Range
- p. 135-138
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40011701
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIMONY ALLOYS; ELECTRON MICROPROBE ANALYSIS; IRON ALLOYS; LANTHANUM ALLOYS; METALLOGRAPHY; PHASE DIAGRAMS; PHASE STUDIES; SOLUBILITY; TEMPERATURE RANGE 0400-1000 K; THERMOELECTRIC MATERIALS; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIAGRAMS; DIFFRACTION; INFORMATION; MATERIALS; MICROANALYSIS; NONDESTRUCTIVE ANALYSIS; RARE EARTH ALLOYS; SCATTERING; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.