Preparation of ultrafine tungsten carbide powder by CVD method from WCl 6 -C 2 H 2 - H 2 mixtures
作者： Chang-Whan Won , Byong-Sun Chun , H.Y. Sohn
关键词: Product (mathematics) 、 Chemical engineering 、 Reaction conditions 、 Specific surface area 、 Tungsten carbide 、 Particle size 、 Materials science 、 Mineralogy 、 Volumetric flow rate 、 Morphology (linguistics) 、 Partial pressure
摘要: The synthesis of ultrafine tungsten carbide powder from WCl6–C2H2-H2 mixtures was investigated. Under most experimental conditions, a mixture α–WC and β–W2C produced. specific surface area morphology the product prepared under various reaction conditions were determined. particle size increased with temperature up to 1373 K then decreased, went through minimum increasing WCl6 partial pressure, decreased H2 flow rate. showed opposite trend in all cases.
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sci-hub.se 参考文章(5)
Bernard Dennis Cullity, Elements of X-ray diffraction ,(1956)
H. E. EXNER, J. GURLAND, A REVIEW OF PARAMETERS INFLUENCING SOME MECHANICAL PROPERTIES OF TUNGSTEN CARBIDE–COBALT ALLOYS Powder Metallurgy. ,vol. 13, pp. 13- 31 ,(1970) , 10.1179/POM.1970.13.25.002
E. Lardner, Recent Progress in Cemented Carbide Powder Metallurgy. ,vol. 21, pp. 65- 80 ,(1978) , 10.1179/POM.1978.21.2.65
J. Hojo, T. Oku, A. Kato, Tungsten carbide powders produced by the vapor phase reaction of the WCl6-CH4-H2 system Journal of The Less Common Metals. ,vol. 59, pp. 85- 95 ,(1978) , 10.1016/0022-5088(78)90114-5
F. K. ROEHRIG, T. R. WRIGHT, Carbide Synthesis by Freeze‐Drying Journal of the American Ceramic Society. ,vol. 55, pp. 58- 58 ,(1972) , 10.1111/J.1151-2916.1972.TB13405.X