Posco

Research Institute of Industrial Science & Technology

Korea Advanced Institute of Science and Technology

Kyungpook National University Industry-academic Cooperation Foundation

Seong Hoon Yi

Sang-Wook Ha

Gab-Sik Byun

Young-Geun Son

Seung-Dueg Choi

Sang-Hoon Yoon

Eon-Byeong Park

Sang-Won Kim

Seong Tae Kim

Oh Joon Kwon

Sang-Ho Yi

Seung Dueg Choi

Oh-Joon Kwon

Gi Tae Park

Chan Won Jung

Pyuck Pa Choi

Disclosed is a method for producing a Heusler-based phase thermoelectric material using an amorphous phase precursor. More specifically disclosed is a method for producing a powder or bulk thermoelectric material having a microstructure including a Heusler-based phase with a thermoelectric effect by crystallization of an amorphous phase precursor prepared by a non-equilibrium processes. Also disclosed is a device using a Heusler-based phase thermoelectric material produced by the method. The method largely avoids the efficiency problems of conventional methods, including low productivity in scaling up caused by long annealing time, high annealing temperature, and contamination during nanopowder production, achieving improved process efficiency. In addition, the method enables efficient production of a thermoelectric material having a nano-sized microstructure that is difficult to produce by a conventional method.

Method for producing Heusler-based phase thermoelectric material using an amorphous phase precursor and device using Heusler-based phase thermoelectric material produced by the method

A method for manufacturing an amorphous alloy by using liquid pig iron is described. An exemplary embodiment provides a method for manufacturing an amorphous alloy, including providing liquid pig iron, adding an alloy material to the liquid pig iron, and solidifying the liquid pig iron.

Method for manufacturing amorphous alloy by using liquid pig iron

Provided is an iron-based amorphous alloy and a method of manufacturing the same. More particularly, provided is an high carbon iron-based amorphous alloy expressed by a general formula FeCSi&#x3b3;BxPyCrz, wherein &#x3b1;, &#x3b2;, &#x3b3;, x, y and z are atomic % of iron (Fe), carbon (C), silicon (Si), boron (B), phosphorus (P), and chrome (Cr) respectively, wherein &#x3b1; is expressed by &#x3b1;=100&#x2212;(&#x3b2;+&#x3b3;+x+y+z) atomic %, &#x3b2; is expressed by 13.5 atomic %&#x2266;&#x3b2;&#x2266;17.8 atomic %, &#x3b3; is expressed by 0.30 atomic %&#x2266;&#x3b3;&#x2266;1.50 atomic %, x is expressed by 0.1 atomic %&#x2266;x&#x2266;4.0 atomic %, y is expressed by 0.8 atomic %&#x2266;y&#x2266;7.7 atomic %, and z is expressed by 0.1 atomic %&#x2266;z&#x2266;3.0 atomic %.

High-carbon iron-based amorphous alloy using molten pig iron and method of manufacturing the same

Provided is an iron-based amorphous alloy and a method of manufacturing the same. More particularly, provided is an high carbon iron-based amorphous alloy expressed by a general formula Fe&#x3b1;C&#x3b2;Si&#x3b3;BxPyCrz, wherein &#x3b1;, &#x3b2;, &#x3b3;, x, y and z are atomic % of iron (Fe), carbon (C), silicon (Si), boron (B), phosphorus (P), and chrome (Cr) respectively, wherein &#x3b1; is expressed by &#x3b1;=100&#x2212;(&#x3b2;+&#x3b3;+x+y+z) atomic %, &#x3b2; is expressed by 13.5 atomic %&#x2266;&#x3b2;&#x2266;17.8 atomic %, &#x3b3; is expressed by 0.30 atomic %&#x2266;&#x3b3;&#x2266;1.50 atomic %, x is expressed by 0.1 atomic %&#x2266;x&#x2266;4.0 atomic %, y is expressed by 0.8 atomic %&#x2266;y&#x2266;7.7 atomic %, and z is expressed by 0.1 atomic %&#x2266;z&#x2266;3.0 atomic %.

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Daegu, South Korea

Seong Hoon Yi