Effect of Metallic Zn Powder on Oxidation Resistance of Al_2O_3-C Refractories

查看全文 作　　者：LI Youqi KE Changming LI Yousheng LI [1]Nan

机构地区：[1]The Hubei Province Key Laboratory of Ceramic and Refractories,Wuhan University of Science and Technology, Wuhan 430081, China

出　　处：《China's Refractories》索引2006年第15卷第4期,共5页

摘　　要：Al2O3-C specimens were prepared by using tabular corundum, flaky graphite, Al, Si, and Zn powder as starting materials and phenolic formaldehyde resin as binder. Keeping the mass ratios of tabular corundum, flaky graphite, Al and Si constant, different contents of Zn (0, 0.5%, 1%, 2% and 3%) were added respectively. The specimens were heat treated at 120-220℃ for 24h, and then fired at 1400℃ for 3h in air atmosphere. The mass change rate, thickness of decarburization layer, apparent porosity, bulk density and microstructure of the products were determined and observed by means of SEM and EDX. The results show that the specimen with 2% Zn was characterized by minimum in thickness of decarburization layer and in apparent porosity and maximum in bulk density. Consequently, the specimen with 2% metal Zn is supposed to perform the best oxidation resistance. 关键词：锌金属合金氧化性能耐火材料腐蚀机制

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Effect of Metallic Zn Powder on Oxidation Resistance of Al_2O_3-C Refractories

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