가스분무법에 의한 Fe계 비정질 분말의 제조와 볼밀링공정에 의한 연질 Cu 분말과의 복합화 및 SPS 거동 (I) − I. 가스분무 및 복합화 −
Production of Fe Amorphous Powders by Gas-atomization Process and Subsequent Spark Plasma Sintering of Fe Amorphous-ductile Cu Composite Powders Produced by Ball-milling Process (I) − I. Gas Atomization and Production of Composite Powders −
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Fe based (Fe68.2C5.9Si 3.5B6.7P9.6Cr2.1Mo2.0Al2.0) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The experiment results show that the as-prepared Fe amorphous powders less than 90 ㎛ in size has a fullly amorphous phase and its weight fraction was about 73.7%. The as-atomized amorphous Fe powders had a complete spherical shape with very clean surface. Differential scanning calorimetric results of the as-atomized Fe powders less than 90 ㎛ showed that the glass transition, Tg, onset crystallization, Tx, and super-cooled liquid range ΔT=Tx–Tg were 512, 548 and 36oC, respectively. Fe amorphous powders were mixed and deformed well with 10 wt.% Cu by using AGO-2 high energy ball mill under 500 rpm.
Abstract
Fe based (Fe68.2C5.9Si 3.5B6.7P9.6Cr2.1Mo2.0Al2.0) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The experiment results show that the as-prepared Fe amorphous powders less than 90 ㎛ in size has a fullly amorphous phase and its weight fraction was about 73.7%. The as-atomized amorphous Fe powders had a complete spherical shape with very clean surface. Differential scanning calorimetric results of the as-atomized Fe powders less than 90 ㎛ showed that the glass transition, Tg, onset crystallization, Tx, and super-cooled liquid range ΔT=Tx–Tg were 512, 548 and 36oC, respectively. Fe amorphous powders were mixed and deformed well with 10 wt.% Cu by using AGO-2 high energy ball mill under 500 rpm.
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