Study of the combustion synthesis process of nanostructured WC and WC–Co
Study of the combustion synthesis process of nanostructured WC and WC–Co
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DOI：
10.1016/j.matchemphys.2005.04.024
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发表时间：
2005-11
影响因子：
4.6
通讯作者：
H. Nersisyan;H. Won;C. Won;J. Lee
中科院分区：
文献类型：
--
作者：
H. Nersisyan;H. Won;C. Won;J. Lee
本研究开发了一种制备纳米WC和WC-Co粉末的新方法。以WO_3-NaN_3-C和WO_3-Co_3O_4-NaN_3-C为原料，以NaN_3为还原剂，合成了WC和WC-Co粉末。对原料初始浓度、样品直径和燃烧温度等参数进行了研究。最终产物首先经过洗涤，然后用X射线衍射仪和透射电子显微镜进行分析。结果表明，纳米WC和WC-Co的颗粒尺寸分别为50~100 nm和50~200 nm。
In this study, a new approach to synthesize nanostructured WC and WC–Co powders is developed. WC and WC–Co powders have been synthesized from WO3–NaN3–C and WO3–Co3O4–NaN3–C green mixtures in which NaN3was used as a reducing agent. Parametric study of the combustion process including initial concentration of starting materials, samples diameter and the combustion temperature were carried out under argon pressure. The final products are first washed and then examined by XRD and TEM analysis. As a result, phase pure nanostructured WC and WC–Co with the particle sizes of about 50–100 and 50–200nm were obtained.