高频热等离子体合成超细ZrB_2和ZrC粉体材料

Production of Ultra-Fine ZrB_2 and ZrC Powders via RF Plasma

采用高频热等离子体工艺合成ZrB2和ZrC高温超细粉体材料,在热力学计算的基础上,采用XRD、FESEM、霍尔流量计表征产品的纯度、尺寸。结果显示,产品结晶较好纯度较高,平均粒径小于100 nm,松装密度分别为ZrB2 0.71 g/mL,ZrC 0.46 g/mL,实验室产量可以达到500 g/h。

RF thermal plasma had been employed to prepare ZrB2 and ZrC ultra-fine powder materials based on thermodynamic calculation.The products were characterized by XRD,FESEM,and Hall flowmeter.Results revealed that high-purity ZrB2 and ZrC powders with an average diameter less than 100 nm could be obtained,and the apparent density of ZrB2 and ZrC was 0.71 g/mL and 0.46 g/mL.The production capability in the laboratory can reach 500 g/h.