[1]孟维,马成良,葛铁柱,等.稳定性锆镁白云石合成材料的制备、结构和性能研究[J].郑州大学学报(工学版),2016,37(04):40-43.[doi:10.13705/j.issn.1671-6833.2016.04.009]
　Meng Wei,Ma Chengliang,Ge Tiezhu,et al.Preparation and Investigation on the Microstructure and Properties of Stabilized magnesium Dolomite Zirconium Refractory Materials[J].Journal of Zhengzhou University (Engineering Science),2016,37(04):40-43.[doi:10.13705/j.issn.1671-6833.2016.04.009]
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稳定性锆镁白云石合成材料的制备、结构和性能研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
37
期数:
2016年04期
页码:
40-43
栏目:
出版日期:
2016-08-31

文章信息/Info

Title:
Preparation and Investigation on the Microstructure and Properties of Stabilized magnesium Dolomite Zirconium Refractory Materials
作者:
孟维; 马成良; 葛铁柱; 赵飞; 钟香崇
郑州大学高温材料研究所河南省高温功能材料重点实验室
Author(s):
Henan Provincial Key Laboratory of High Temperature Functional Materials, Institute of High Temperature Materials, Zhengzhou University
关键词:
稳定性锆镁白云石; 锆英石; 抗水化性; 物相组成; 显微结构
Keywords:
Stable zirconium magnesium dolomite;  Zircon stone;  Resistance to hydration;  Phase composition;  Microstructure
DOI:
10.13705/j.issn.1671-6833.2016.04.009
文献标志码:
A
摘要:
以白云石、菱镁矿、硅石和锆英石为原料,采用二步煅烧和消化工艺制备出了CaO含量为35%,C/S比(CaO/SiO2分子比)为2.5,ZrO2含量分别为2%、4%、6%、8%的稳定性锆镁白云石合成材料.研究了烧成过程中材料的物相变化,测定了1 500℃、1 550℃、1 600℃、1 650℃烧后材料的体积密度、显气孔率,线收缩率和抗水化性,并采用SEM分析了材料的显微结构.结果表明:1 000℃时,锆英石分解生成CaZrO3,1 100℃后硅酸钙开始生成,1 300℃后CaO完全反应;随烧成温度提高,材料的致密度提高,1 600℃烧后材料的体积密度增加到3.113.16g/cm3;1 650℃烧后材料的水化增重为0.03%0.07%,f-CaO转变为稳定的硅酸钙和CaZrO3等物相,材料的抗水化性显著改善.
Abstract:
Using dolomite, magnesite, silica and zircon as raw materials, a stable zircon magnesite dolomite composite with CaO content of 35%, C/S ratio (CaO/SiO2 molecular ratio) of 2.5, and ZrO2 content of 2%, 4%, 6%, and 8% was prepared by two-step calcination and digestion process, The microstructure of the material was analyzed using SEM. The results showed that at 1000 ℃, zircon decomposed into CaZrO3, and calcium silicate began to form at 100 ℃. After 1300 ℃, CaO completely reacted; As the firing temperature increases, the density of the material increases, and the bulk density of the material increases to 3.113.16g/cm3 after firing at 1600 ℃; After firing at 650 ℃, the hydration weight gain of the material was 0.03% 0.07%, and f-CaO transformed into stable calcium silicate and CaZrO3 phases, significantly improving the material’s hydration resistance
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