Effect of Halogenation Agents on Preparation of Nano VC Whiskers AITranslate

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Chinese Library Classification Number:TB383[一般工业技术—材料科学与工程]

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Nano VC whiskers were prepared by using ammonium metavanadate,xylose,etc.as precursor materials with carbothermal reduction method.The effects of type and dosage of halogenation agents on the preparation of nano VC whiskers were studied by SEM,TEM and XRD.The results show that nano VC whiskers with about 100 nm diameter,smooth surface and good morphology can be prepared at 1000℃for 2 h by adding 10%NaF as the halogenation agent.NaF is the most ideal halogenation agent for preparing VC whiskers in six kinds of halogenation agents.The dosage of halogenation agents has an important influence on the preparation of nano VC whiskers.The optimal dosage of NaF is 10%.Too little NaF cannot promote the growth of VC whiskers,while too much NaF will inhibit the growth of VC whiskers.