以Fe为催化剂低温碳化反应合成SiC粉体
发布时间：2018-09-13 06:22
【摘要】：以单质硅粉和酚醛树脂为原料,以硝酸铁为催化剂前驱体,通过碳化反应的方法合成了β-SiC纳米粉体。研究了催化剂用量、反应温度及保温时间等工艺因素对合成SiC粉体的影响,采用XRD、SEM、TEM及EDS对合成产物进行了表征。结果表明:(1)当催化剂用量为1.5wt.%时,1250℃反应3 h后所得产物为单相的SiC;而不含催化剂的样品需经1350℃/3 h反应后才能制备出单相的SiC;(2)所合成的SiC颗粒平均粒径约为60 nm。
[Abstract]:The nano-sized 尾 -SiC powder was synthesized by carbonation reaction using silicon powder and phenolic resin as raw materials and ferric nitrate as catalyst precursor. The effects of the amount of catalyst, reaction temperature and holding time on the synthesis of SiC powder were studied. The synthesis products were characterized by XRD,SEM,TEM and EDS. The results show that: (1) when the amount of catalyst is 1.5wt.%, the product is single-phase SiC; after 3 h reaction at 1250 鈩，
本文编号：2240337
[Abstract]:The nano-sized 尾 -SiC powder was synthesized by carbonation reaction using silicon powder and phenolic resin as raw materials and ferric nitrate as catalyst precursor. The effects of the amount of catalyst, reaction temperature and holding time on the synthesis of SiC powder were studied. The synthesis products were characterized by XRD,SEM,TEM and EDS. The results show that: (1) when the amount of catalyst is 1.5wt.%, the product is single-phase SiC; after 3 h reaction at 1250 鈩，
本文编号：2240337
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