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논문 기본 정보

자료유형
학술저널
저자정보
Mehdi Naghikhani (Islamic Azad University) Mohammad Ardestani (Islamic Azad University) Mohammad Moazami-Goudarzi (Islamic Azad University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.6
발행연도
2021.1
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1,639 - 1,648 (10page)

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Tungsten carbide reinforced brass matrix composites with 30 and 70 wt% brass were synthesized by mechanical milling anddensification of brass/tungsten carbide powder mixtures. Two different sintering methods included pressureless and sparkplasma sintering were applied for densification of the milled powders. The relative density of the spark plasma sinteredsamples was much higher than those of the pressureless sintered ones confirming higher microstructural densification duringspark plasma sintering. The hardness of the spark plasma sintered composites containing 30 and 70 wt% brass were 303 and175 Vickers, respectively which was about five times more than those of the pressureless sintered composites with similarweight percent of brass. In addition, the wear performance of the composites was investigated by the pin on disc method. The spark plasma sintered samples with 30 wt% brass showed the highest wear resistant among the processed samplesowing to their higher hardness. The microscopic observations revealed that delamination and adhesion were the dominantwear mechanisms for the pressureless and spark plasma sintered composites, respectively. The bending strength of the sparkplasma sintered samples with 30 and 70 wt% brass were 329 and 453 MPa, respectively.

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