기계적 밀링과 플라즈마 활성 소결법에 의한 TiB2 분산Cu기 복합재료 제조
Synthesis of TiB2 Dispersed Cu Matrix Composite Material by the Combination of the Mechanical Milling and Plasma Activated Sintering Process
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Abstract
The present study was focused on the synthesis of a TiB2 dispersed copper matrix composite material by the combination of the mechanical milling and plasma activated sintering processes. The Cu/TiB2 mixed powder was prepared by the combination of the mechanical milling and reduction processes using the copper oxide and titanium diboride powder as the raw material. The synthesized Cu/TiB2 mixed powder was sintered by the plasma activated sintering process. The hardness and electric conductivity of the sintered bodies were measured using micro vickers hardness and four probe method, respectively. The relative density of Cu/TiB2 composite material sintered at 800℃ showed about 98% of theoretical density. The Cu-1vol%TiB2 composite material has a hardness of about 130 Hv and an electric conductivity of about 85% IACS. The hardness and electric conductivity of Cu-3vol%TiB2 composite material were about 140 Hv and about 45% IACS, respectively.
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