Local corrosion of magnesia-chrome refractories driven by Marangoni convection at the slag-metal interface.

Local corrosion of magnesia-chrome refractories driven by Marangoni convection at the slag-metal interface.
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渣-金属界面处马兰戈尼对流驱动的镁铬耐火材料的局部腐蚀。

DOI:
10.1006/jcis.2002.8504
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发表时间:
2002
影响因子:
9.9
通讯作者:
K. Mukai
K. Mukai
中科院分区:
化学1区
文献类型:
--
作者:
Z. Yuan;W. Huang;K. Mukai

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采用浸渍试验研究了含镁铝尖晶石的镁铬耐火材料在熔渣-金属界面附近的局部腐蚀。随着熔渣中FeO、MgO和Al(2)O(3)含量的增加,熔渣-金属界面附近局部腐蚀程度减小。方形棱柱试样截面上对角线方向的局部腐蚀深度始终是侧面法向腐蚀深度的2倍,且在整个腐蚀过程中截面始终保持初始方形。局部腐蚀被认为是由马兰戈里对流驱动的,它加速了从耐火材料中溶解的成分的传质。
The local corrosion of magnesia-chrome refractories containing MgO-Al(2)O(3) spinel has been investigated near the slag-metal interface by immersion tests. The local corrosion extent near the slag-metal interface was found to decrease with the increase of FeO, MgO, and Al(2)O(3) contents in the slag. The local corrosion depths in the diagonal direction on the cross sections of the square prism specimens were always 2 times those in the normal direction of the lateral faces, and the cross sections maintained their initial square shape during whole the corrosion duration. The local corrosion is reckoned to be driven by the Marangori convection, which accelerated the mass transfer of the components dissolved from the refractories.
DOI: --
发表时间: 2002
期刊: J.Cryst.Growth 234
影响因子: --
作者:
G.Sazaki;S.Miyashita;M.Nokura;T.Ujihara;N.Usami;K.Nakajima
通讯作者: K.Nakajima