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Title: Half-heusler alloys with enhanced figure of merit and methods of making

Patent ·
OSTI ID:1183343

Thermoelectric materials and methods of making thermoelectric materials having a nanometer mean grain size less than 1 micron. The method includes combining and arc melting constituent elements of the thermoelectric material to form a liquid alloy of the thermoelectric material and casting the liquid alloy of the thermoelectric material to form a solid casting of the thermoelectric material. The method also includes ball milling the solid casting of the thermoelectric material into nanometer mean size particles and sintering the nanometer size particles to form the thermoelectric material having nanometer scale mean grain size.

Research Organization:
GMZ Energy, Inc., Waltham, MA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-00ER45805
Assignee:
GMZ Energy, Inc. (Waltham, MA)
Patent Number(s):
9,048,004
Application Number:
13/719,966
OSTI ID:
1183343
Resource Relation:
Patent File Date: 2012 Dec 19
Country of Publication:
United States
Language:
English

References (57)

Method for producing thermoelectric elements patent December 1991
Thermoelectric material patent September 1993
Apparatus for bonding a particle material to near theoretical density patent November 1999
Thermoelectric semiconductor material and method of manufacturing the same patent August 2002
Thermoelectrically cooling electronic devices patent February 2004
Magnetic sensing element including magnetic layer composed of Heusler alloy disposed on underlayer having {111}-oriented fcc structure patent December 2007
Magnetic sensing element including pinned layer and/or free layer composed of [110] crystal planes-oriented Heusler alloy patent February 2008
Nanocomposites with high thermoelectric figures of merit patent December 2008
Thermoelectric material and thermoelectric module using the thermoelectric material patent February 2010
Thermoelectric material and thermoelectric device patent June 2010
Production method of thermoelectric semiconductor alloy, thermoelectric conversion module and thermoelectric power generating device patent December 2010
Thermoelectric material, thermoelectric conversion module and thermoelectric power generating device using the same patent December 2010
Thermoelectric material and thermoelectric element patent November 2011
Flexible thermoelectric circuit patent-application May 2003
Thermoelectric Material Using Zrnisn-Based Half-Heusler Structures patent-application June 2004
Thermoelectric Material and Thermoelectric Element patent-application August 2005
Thermoelectric material and method for producing same patent-application March 2006
Waste heat recovery system and thermoelectric conversion system patent-application July 2006
Methods for High Figure-of-Merit in Nanostructured Thermoelectric Materials patent-application August 2008
Composite Material of Complex Alloy and Generation Method Thereof, Thermoelectric Device and Thermoelectric Module patent-application July 2010
Reduced Grain Size and Improved Thermoelectric Properties of Melt Spun (Hf,Zr)NiSn Half-Heusler Alloys journal December 2009
Synthesis and thermoelectric properties of (Ti,Zr,Hf)(Co,Pd)Sb half-Heusler compounds journal November 2009
Enhancement in Thermoelectric Figure-Of-Merit of an N-Type Half-Heusler Compound by the Nanocomposite Approach journal May 2011
Enhanced Thermoelectric Figure of Merit of p-Type Half-Heuslers journal February 2011
Effect of substitutions on the thermoelectric figure of merit of half-Heusler phases at 800 °C journal January 2006
(Zr,Hf)Co(Sb,Sn) half-Heusler phases as high-temperature (>700°C) p-type thermoelectric materials journal July 2008
Transport properties of pure and doped M NiSn ( M =Zr, Hf) journal April 1999
Enhancement of thermoelectric figure-of-merit at low temperatures by titanium substitution for hafnium in n-type half-Heuslers Hf0.75−xTixZr0.25NiSn0.99Sb0.01 journal January 2013
Magneto-optical properties of metallic ferromagnetic materials journal August 1983
Ternary transition metal antimonides and bismuthides with MgAgAs-type and filled NiAs-type structure journal May 1997
Bandgap features and thermoelectric properties of Ti-based half-Heusler alloys conference January 1999
Thermoelectric properties of half-Heusler phases: ErNi/sub 1-x/Cu/sub x/Sb, YNi/sub 1-x/Cu/sub x/Sb and Zr/sub x/Hf/sub y/Ti/sub z/NiSn conference January 1999
Hyperfine Fields of Non-Magnetic Atoms in Ferromagnetic Heusler Alloys: Co 2 TiAl and Co 2 TiGa journal January 1984
Electronic phase diagram of the XTZ (X=Fe, Co, Ni; T=Ti, V, Zr, Nb, Mn; Z=Sn, Sb) semi-Heusler compounds journal January 2000
Effects of various grain structure and sizes on the thermal conductivity of Ti-based half-Heusler alloys conference January 2001
Thermoelectric properties of semimetallic (Zr, Hf)CoSb half-Heusler phases journal August 2000
Efficient dopants for ZrNiSn-based thermoelectric materials journal January 1999
Study of the 18-electron band gap and ferromagnetism in semi-Heusler compounds by non-spin-polarized electronic band structure calculations journal August 2000
Enhanced thermoelectric properties in CoSb3-xTex alloys prepared by mechanical alloying and spark plasma sintering journal November 2007
Fast preparation and thermal transport property of TiCoSb-based half-Heusler compounds journal November 2007
Electrical transport properties of TiCoSb half-Heusler phases that exhibit high resistivity journal December 2000
Structural stability of Ni-containing half-Heusler compounds journal November 2000
Advances in solar thermal electricity technology journal January 2004
High-performance flat-panel solar thermoelectric generators with high thermal concentration journal May 2011
Effect of boundary scattering on the thermal conductivity of TiNiSn-based half-Heusler alloys journal May 2008
Cooling, Heating, Generating Power, and Recovering Waste Heat with Thermoelectric Systems journal September 2008
New Directions for Low-Dimensional Thermoelectric Materials journal April 2007
Enhancement of Thermoelectric Efficiency in PbTe by Distortion of the Electronic Density of States journal July 2008
Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit journal February 2004
Recent advances in thermoelectric nanocomposites journal January 2012
High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys journal May 2008
Low thermal conductivity and high thermoelectric figure of merit in n-type BaxYbyCo4Sb12 double-filled skutterudites journal May 2008
Crossover from semiconductor to magnetic metal in semi-Heusler phases as a function of valence electron concentration journal February 1998
Enhanced Thermoelectric Figure-of-Merit in Nanostructured p-type Silicon Germanium Bulk Alloys journal December 2008
High thermoelectric performance BiSbTe alloy with unique low-dimensional structure journal June 2009
Solubility study of Yb in n -type skutterudites Yb x Co 4 Sb 12 and their enhanced thermoelectric properties journal September 2009
Evaluation of Half-Heusler Compounds as Thermoelectric Materials Based on the Calculated Electrical Transport Properties journal October 2008