高频热等离子体法合成纳米ZrC粉体及其表征

以炭黑和甲烷分别作为碳源,四氯化锆作为锆源,采用高频热等离子体法合成了超细ZrC粉体。分别采用XRD、高频红外燃烧、SEM、化学重量法对实验产物进行了表征,分析了超细ZrC粉体的物相、纯度、粒径与碳源及进气量之间的影响规律。研究表明:采用不同碳源所合成的ZrC粉体粒径均在100 nm以下,相比较炭黑为碳源,甲烷作为碳源合成的产品纯度高,氧含量低,产率大,因此,甲烷作为碳源更适于批量制备超细ZrC粉体。

Synthesis and Characterization of Ultra-Fine ZrC Powder Via RF Thermal Plasma Method

RF thermal plasma(RFTP) had been utilized for synthetizing ultra-fine ZrC powders with different carbon sources, such as carbon black and methane. The products of the experiment were characterized by XRD, IR absorption, SEM, and chemical analysis. The results demonstrated that the ZrC powders which were less than 100 nm in the average diameter could be obtained with both carbon sources. However, methane played a better role than carbon black in the purity, the oxygen content and the productivity of ZrC powders. So, as a carbon source, methane was more applicable for batch preparation of ultra-fine ZrC powders.