Control of crystallographic texture and grain size in bulk thermoelectric materials through constrained deformation
US8551441B1 · kind B1 · utility
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Key dates
| Filing date | May 11, 2012 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | May 11, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/766
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
New methods for improving thermoelectric properties of bismuth telluride based materials are described. Constrained deformation, such as by canned/sandwich, or encapsulated, rolling and plane strain channel die compression, particularly at temperatures above 80% of the melting point of the material on an absolute temperature scale, changes the crystallographic texture and grain size to desirably increase the values of both the thermoelectric power factor and the thermoelectric figure of merit ZT for the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.