材料科学
微观结构
溶解
尖晶石
熔渣(焊接)
腐蚀
骨料(复合)
冶金
磨细高炉矿渣
高炉
图层(电子)
化学工程
复合材料
水泥
工程类
作者
Jun Ma,Huizhong Zhao,Yichong Li,Jun Yu,Han Zhang,Lida Shi,Yufan Zhao,Jun He
标识
DOI:10.1016/j.ceramint.2022.03.326
摘要
In this study, three types of commercial tabular alumina aggregates with different microstructural characteristics were selected for corrosion tests on blast furnace slags with varying basicities. A corrosion mechanism with different microstructural characteristics is proposed, and the dominant microstructures in high- and low-basicity environments are evaluated. The pore structure was found to have a crucial influence on the dissolution of tabular alumina aggregates in the blast furnace slag. Under low-basicity (0.5–0.7) conditions, a small amount of clustered pore structure was beneficial for obtaining the maximum thickness (40–60 μm) of the isolation layer between the tabular alumina aggregate and slag. Under high-basicity (0.9–1.1) conditions, the circular pore structure tended to form a uniform and stable double-layer isolation structure of calcium hexaaluminate and MgAl2O4 spinel.
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