Isolation or corrosion of microporous alumina in contact with various CaO-Al2O3-SiO2 slags

Isolation or corrosion of microporous alumina in contact with various CaO-Al2O3-SiO2 slags
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微孔氧化铝与各种CaO-Al2O3-SiO2渣接触的隔离或腐蚀

DOI:
10.1016/j.corsci.2017.01.018
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发表时间:
2017-05
期刊:
影响因子:
8.3
通讯作者:
Gu Huazhi
Gu Huazhi
中科院分区:
材料科学1区
文献类型:
--
作者:
Fu Lvping;Huang Ao;Lian Pengfei;Gu Huazhi

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微孔结构是否能保护轻质氧化铝骨料免受各种熔渣的侵蚀?研究了熔渣成分和氧化铝骨料结构参数对其抗渣性能的影响,并提出了氧化铝在熔渣孔隙内溶解的速率模型。与显气孔率相比,孔径大小对轻质氧化铝骨料在熔渣中的溶解有着至关重要的影响。应实现氧化铝溶解速率和固相沉淀速率之间的平衡以形成隔离层。
Is the microporous structure able to protect lightweight alumina aggregates against corrosion of various molten slags? The effects of the slag compositions and structural parameters of alumina aggregates on their slag resistance behavior were investigated, and a dissolution rate model was proposed to describe the dissolution of alumina in the various molten slags inside the pores. Compared to the apparent porosity, the pore size has a crucial impact on dissolution of the lightweight alumina aggregates in the molten slags. A balance between the alumina dissolution rate and the solid phase precipitation rate should be achieved to form an isolation layer.
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