Effect of Metallic Zn Powder on Oxidation Resistance of Al2O3-C Refractories

被引：0
作者：
LI Youqi
机构：
来源：
China'sRefractories | 2006年 / 04期
关键词：
Corrosion mechanism; MgO-CaO Refractory; Antioxidant; Oxidation resistance;
D O I：
暂无
中图分类号：
TQ175 [耐火材料工业];
学科分类号：
0805 ; 080502 ;
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.
引用
收藏
页码：29 / 33
页数：5
相关论文
共 8 条
[1]  
Carbon Composites Refractories. Zhang W J,Li N. . 1990
[2]  
A theoretical evaluation of the stability of SiA- LON-bonded silicon carbide in the blast Furnace environ- ment. Gunn D A. Journal of the European Ceramic Society . 1993
[3]  
Manuals of colored metallurgy. Zh TC. . 1992
[4]  
Mechanics of blocking pores during the course of oxidation of Al2O3-C production. Tian S X,CH ZH Y. Naihuo Cail- iao . 1989
[5]  
Actuality and prospect in research of oxidation resistant properties for carbon-carbon composites. Wang HJ,Wang Q H,Gu X J. Journal of Materials Science and Engineering . 2003
[6]  
Research on oxidation re- sistance of Al2O3-ZrO2-C. Jin C J,Qiu W D,Sun J L et al. Naihuo Cailiao . 2000
[7]  
Recent advances in organic re- actions using Zinc metal as reductant. Li G P,Jiang HF,Li J H. Chinese Journal of Organic Chemistry . 2002
[8]  
Influence of antioxidant on unfired carbonaceous refractories. Tang Q H. Foreign Refractories . 1990
1