發(fā)布時(shí)間：2018-05-07 13:15

  本文選題：Q鋼 + 直流雜散電流��； 參考：《材料保護(hù)》2015年09期

【摘要】：目前,國(guó)內(nèi)鮮見(jiàn)關(guān)于Q235鋼在直流雜散電流和酸性土壤聯(lián)合作用下腐蝕行為的報(bào)道。通過(guò)失重法、電化學(xué)阻抗譜、顯微鏡、掃描電鏡和X射線衍射法等,研究了直流雜散電流大小對(duì)Q235鋼在含水率為30%和40%的鷹潭酸性土壤中腐蝕特性的影響。結(jié)果表明:土壤含水率和直流雜散電流對(duì)Q235鋼的腐蝕行為有較強(qiáng)影響,其表面呈現(xiàn)局部腐蝕,電化學(xué)阻抗(EIS)譜為偏心的半圓;土壤的含水率相同時(shí),EIS譜的容抗弧隨著直流雜散電流的增加而減小,腐蝕速率和最大點(diǎn)蝕深度隨著直流雜散電流的增加而增大;Q235鋼在含水率為30%的土壤中的腐蝕快于在含水率為40%的土壤中的。
[Abstract]:At present, there are few reports on the corrosion behavior of Q235 steel under the combined action of DC stray current and acidic soil. By means of weightlessness, electrochemical impedance spectroscopy, microscope, scanning electron microscope and X-ray diffraction, the effect of DC stray current on the corrosion characteristics of Q235 steel in Yingtan acid soil with water content of 30% and 40% was studied. The results show that soil moisture content and DC stray current have a strong effect on the corrosion behavior of Q235 steel. The surface of Q235 steel exhibits local corrosion, and the electrochemical impedance spectroscopy (EIS) is eccentric semicircle. When the soil moisture content is the same, the capacitive resistance of EIS decreases with the increase of DC stray current. The corrosion rate and maximum pitting depth increase with the increase of DC stray current. The corrosion rate of Q235 steel in soil with water content of 30% is faster than that in soil with water content of 40%.
【作者單位】： 國(guó)網(wǎng)湖北省電力公司電力科學(xué)研究院;
【分類(lèi)號(hào)】：TG142.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 李曉;李言濤;蔣泓松;劉建國(guó);侯保榮;;交流雜散電流對(duì)埋地Q235鋼腐蝕行為的影響[J];材料保護(hù);2012年05期

2 陳旭;杜翠薇;李曉剛;梁平;;含水率對(duì)X70鋼在鷹潭酸性土壤中腐蝕行為的影響[J];石油化工高等學(xué)校學(xué)報(bào);2007年04期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張s，

本文編號(hào)：1857064