Back to Search
Start Over
Mechanical properties of (Bi,Sb)2Te3 solid solutions obtained by directional crystallization and spark plasma sintering
- Source :
- Technical Physics Letters. 42:105-107
- Publication Year :
- 2016
- Publisher :
- Pleiades Publishing Ltd, 2016.
-
Abstract
- We have studied the temperature dependence of the mechanical strength at uniaxial compression for solid solutions based on bismuth and antimony chalcogenides, which were prepared by three methods: (i) vertical zone melting (VZM), (ii) hot extrusion, and (iii) spark plasma sintering (SPS). In the samples of solid solutions obtained by VZM and extrusion, a brittle–ductile transition was observed in a wised temperature interval of 200–350°C. In nanostructured SPS samples, transition from brittle to plastic fracture was observed within 170–200°C. The room-temperature strength of nanostructured samples was eight to nine times as large as that of VZM samples, and the stress–strain curves of these materials were significantly different. At a temperature of about 300°C, the strength of nanostructured solid solutions decreases to nearly zero.
- Subjects :
- 010302 applied physics
Zone melting
Materials science
Physics and Astronomy (miscellaneous)
chemistry.chemical_element
Spark plasma sintering
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
law.invention
Bismuth
Brittleness
Antimony
chemistry
law
0103 physical sciences
Extrusion
Composite material
Crystallization
0210 nano-technology
Solid solution
Subjects
Details
- ISSN :
- 10906533 and 10637850
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Technical Physics Letters
- Accession number :
- edsair.doi...........2eb7f1e3067c74ec8028ce79e3330a53