Reduction in thermal conductivity of Bi-Te alloys through grain refinement method
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Reduction in thermal conductivity of Bi-Te alloys through grain refinement method
|
|
| Creator |
Dutta, Soma
Shubha, V Ramesh, TG |
|
| Subject |
Metals and Metallic Materials
|
|
| Description |
Ternary alloys of thermoelectric materials Bi–Sb–Te and Bi–Se–Te of molecular formula, Bi0·5Sb1·5Te3 (p type) and Bi0·36Se0·064Te0·576 (n type), were prepared by mechanical alloying method. The preparation of materials by mechanical alloying method has effectively reduced the thermal conductivity by generating a large number of induced grain boundaries with required degree of disorder. The process of frequent milling was adapted for grain refinement. Substantial reduction in thermal conductivity was achieved due to nano-structuring of these alloys. Thermal
conductivity values were found to be very low at room temperature, 0·5W/mK and 0·8W/mK, respectively for
p and n type materials.
|
|
| Publisher |
Indian Academy of Sciences
|
|
| Date |
2013-10
|
|
| Type |
Journal Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://nal-ir.nal.res.in/12254/1/ja557.pdf
Dutta, Soma and Shubha, V and Ramesh, TG (2013) Reduction in thermal conductivity of Bi-Te alloys through grain refinement method. Bulletin of Materials Science, 36 (5). pp. 853-857. ISSN 0250-4707 |
|
| Relation |
http://nal-ir.nal.res.in/12254/
|
|