Telmenbayar, L. Spark plasma sintering method on the fabrication of tungsten based hard alloy [] / L. Telmenbayar, T. Yadamragchaa, M. Delgermaa // Проблемы механики современных машин : материалы 7 международной научной конференции (25 – 30 июня 2018 г.) / отв. ред. В. С. Балбаров ; Восточно-Сибирский государственный университет технологий и управления. - Улан-Удэ : Издательство ВСГУТУ, 2018. - Т. 3. - С. 10-13. - Библиогр. в конце ст.
Рубрики: Машиностроение--Обработка материалов--Монголия Технология металлов--Порошковая металлургия Монголия Кл.слова (ненормированные): обработка металлов -- металлообработка -- плазменное спекание -- порошковая металлургия -- сплавы Аннотация: In this work, the effect of the sintering temperature, pressure, holding time and WC:Co weight ratio on optimization of tungsten carbide based hard alloys were investigated. And alloys with good properties were successfully prepared by spark plasma sintering method. The result show that sintering temperature, pressure, holding time and WC:Co weight ratio are critical factors affecting the densification and mechanical properties of the alloys. Pure tungsten carbide (99.99%) and cobalt (99.99%) powder mixed 24 h with mixing speed of 60 rpm. Mixtures heated up 1000-12000С, under pressure of 30-70 MPa, during 15-30 min in the Spark plasma sintering furnace. ). Sample is measured by Rockwell hardness testing machine and density measurement method. When the sintered for 30 min under 70 MPa, the nearly fully densified alloys are produced. And when the sintering temperature increases to 10000C, alloys have the best hardness. Therefore, the WC-Co cemented carbide sintered at 10000C for 30 min under 70 MPa with weight ratio of 87.5:12.5 exhibits the optimum densification and mechanical properties. Перейти к внешнему ресурсу: полный текст Доп.точки доступа: Балбаров, В. С. \отв. ред.\; Yadamragchaa, T.; Delgermaa, M. |