HOU Yanqing
,
XIE Gang
,
TAO Dongping
,
et al
钢铁研究学报(英文版)
Modified quasi-regular solution model has been got based on the sub-regular solution model and quasi-regular solution model in this article. The mixed energy parameter can be denoted a function of concentration and temperature. The three parameters of this model are fitted by the computer-assisted analysis based on the experiment data of activity at two different temperatures. Seven binary molten slag systems in the whole concentration are calculated with the application of the model and the average relative error is within 10%. That shows that the calculated result is agreement with the experiment data. Ten binary slag systems presenting saturation concentration are also calculated, but the average relative error is bigger. So the calculated result is not good agreement with the experiment data. But the calculated result is superior to regular solution model, sub-regular solution model and quasi-regular solution model.
关键词:
Activity;Binary molten slag;Modified model;Sub-regular solution
MI Fengyi
,
WANG Xiangdong
,
LIU Zhipu
,
WANG Bing
,
PENG Yun
,
TAO Dongping
钢铁研究学报(英文版)
The corrosion behavior of lowcarbon steel (CS), Pbearing steel (PS) and PRE weathering steel (PREWS) exposed for two years in Jiangjin of China was investigated. The results showed that during 2year exposure test, corrosion data of the experimental steels followed the bilogarithmic equation, and the average corrosion depth of PS and PREWS was decreased by 195% and 282% respectively compared with that of CS. Scanning electron microscope, electrochemical impedance spectroscope and Fourier transform infrared spectroscope were used to characterize the corrosion products. The research results showed that P in steel could promote the formation of an amorphous ferric oxyhydroxide layer near the substrate. The addition of RE could effectively increase the charge transportation resistance of rust.
关键词:
weathering steel
,
industrial atmosphere
,
rust layer
,
synergistic effect
