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홍희성(Huiseong Hong),이상필(Sangpill Lee),이진경(Jinkyung Lee),이문희(Moonhee Lee),김성원(Sungwon Kim),서병석(Seobyeong Seok),이서희(Seohee Lee) 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.12
In this study, the strength characteristics and microstructure of tungsten materials were investigated. Tungsten materials were fabricated using the combination of solid state sintering process and applied pressure. Tungsten powder was sintered at the sintering temperature of 1700 ℃ or less. Tungsten materials showed good flexural strength at ths sintering temperature of 1500 ℃, accompanying the creation of fine grain and the micro pore. However, tungsten materials fabricated at the sintering temperature above 1600 ℃ showed coarsening of tungsten grains and reduce flexural strength.