不同鋼材在儲(chǔ)罐沉積水中的電化學(xué)腐蝕行為
發(fā)布時(shí)間：2018-10-24 13:54
【摘要】：目前,鮮有多種鋼材在儲(chǔ)罐沉積水中腐蝕機(jī)制的研究報(bào)道。采用電化學(xué)阻抗譜(EIS)和動(dòng)電位極化曲線測試技術(shù)研究碳鋼Q235,管線鋼X65、X80,不銹鋼316L等4種鋼材在原油儲(chǔ)罐沉積水中的電化學(xué)腐蝕行為,并結(jié)合掃描電鏡(SEM)、電子能譜(EDS)和X射線衍射譜(XRD)對鋼材腐蝕形貌和腐蝕產(chǎn)物成分進(jìn)行分析。結(jié)果表明:Q235鋼、X65鋼和X80鋼浸泡24 d后表面生成疏松腐蝕產(chǎn)物,316L鋼表面沒有明顯腐蝕現(xiàn)象發(fā)生;Q235(3.462μA/cm~2)、X65鋼(4.122μA/cm~2)和X80鋼(5.848μA/cm~2)在原油沉積水中極化曲線自腐蝕電流密度遠(yuǎn)大于316L(0.118μA/cm~2),316L鋼極化曲線有明顯的鈍化區(qū);隨著浸泡時(shí)間延長,Q235鋼、X65鋼、X80鋼的EIS譜阻抗模值緩慢增加,隨后阻抗模值降低,而316L鋼的阻抗模值沒有明顯變化。
[Abstract]:At present, there are few reports on corrosion mechanism of steel in storage tank. The electrochemical corrosion behavior of carbon steel Q235, pipeline steel X65TX 80 and stainless steel 316L in sedimentary water of crude oil tank was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curve test. The corrosion morphology and corrosion product composition of steel were analyzed by scanning electron microscope (SEM) (SEM), electron spectroscopy (EDS) and X-ray diffraction (XRD). The results show that after immersion in Q235, X65 and X80 steels for 24 days, loose corrosion products are formed on the surface of 316L steel, and no obvious corrosion occurs on the surface of 316L steel, and the self-corrosion current density of Q235 (3.462 渭 A/cm~2), X65 steel (4.122 渭 A/cm~2) and X80 steel (5.848 渭 A/cm~2) in crude oil deposition water is much higher than that of 316L (0.118 渭 A/cm~2) and 316L steel. The polarization curve has obvious passivation zone. With the prolongation of soaking time, the EIS impedance mode values of Q235, X65 and X80 steels increase slowly, then decrease, but the impedance modulus values of 316L steel do not change obviously.
【作者單位】： 中國科學(xué)院海洋新材料與應(yīng)用技術(shù)重點(diǎn)實(shí)驗(yàn)室浙江省海洋材料與防護(hù)技術(shù)重點(diǎn)實(shí)驗(yàn)室中國科學(xué)院寧波材料技術(shù)與工程研究所;浙江海洋大學(xué)船舶與機(jī)電工程學(xué)院;蕪湖春風(fēng)新材料有限公司;隆泰源工貿(mào)有限公司;
【基金】：國家自然科學(xué)基金(41506098)資助 中國博士后基金和第九批特等資助(2015M580528,2016T90553) 浙江省博士后科研項(xiàng)目擇優(yōu)資助(BSH1502160) 寧波市自然科學(xué)基金(2016A610261)資助
【分類號(hào)】：TG172
本文編號(hào)：2291598
[Abstract]:At present, there are few reports on corrosion mechanism of steel in storage tank. The electrochemical corrosion behavior of carbon steel Q235, pipeline steel X65TX 80 and stainless steel 316L in sedimentary water of crude oil tank was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curve test. The corrosion morphology and corrosion product composition of steel were analyzed by scanning electron microscope (SEM) (SEM), electron spectroscopy (EDS) and X-ray diffraction (XRD). The results show that after immersion in Q235, X65 and X80 steels for 24 days, loose corrosion products are formed on the surface of 316L steel, and no obvious corrosion occurs on the surface of 316L steel, and the self-corrosion current density of Q235 (3.462 渭 A/cm~2), X65 steel (4.122 渭 A/cm~2) and X80 steel (5.848 渭 A/cm~2) in crude oil deposition water is much higher than that of 316L (0.118 渭 A/cm~2) and 316L steel. The polarization curve has obvious passivation zone. With the prolongation of soaking time, the EIS impedance mode values of Q235, X65 and X80 steels increase slowly, then decrease, but the impedance modulus values of 316L steel do not change obviously.
【作者單位】： 中國科學(xué)院海洋新材料與應(yīng)用技術(shù)重點(diǎn)實(shí)驗(yàn)室浙江省海洋材料與防護(hù)技術(shù)重點(diǎn)實(shí)驗(yàn)室中國科學(xué)院寧波材料技術(shù)與工程研究所;浙江海洋大學(xué)船舶與機(jī)電工程學(xué)院;蕪湖春風(fēng)新材料有限公司;隆泰源工貿(mào)有限公司;
【基金】：國家自然科學(xué)基金(41506098)資助 中國博士后基金和第九批特等資助(2015M580528,2016T90553) 浙江省博士后科研項(xiàng)目擇優(yōu)資助(BSH1502160) 寧波市自然科學(xué)基金(2016A610261)資助
【分類號(hào)】：TG172
【相似文獻(xiàn)】
相關(guān)期刊論文 前2條
1 周永璋;韓棟j;曾建民;魏無際;顧伯勤;;影響油罐沉積水腐蝕行為的因素[J];腐蝕科學(xué)與防護(hù)技術(shù);2009年03期
2 周永璋;婁菲菲;朱啟武;何蓮;顧伯勤;;油罐沉積水中幾種離子濃度對孔蝕的影響[J];南京工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年06期
相關(guān)會(huì)議論文 前1條
1 周永璋;韓棟j;魏無際;顧伯勤;;油罐沉積水腐蝕行為的因素研究[A];2008年全國腐蝕電化學(xué)及測試方法學(xué)術(shù)交流會(huì)論文摘要集[C];2008年
相關(guān)碩士學(xué)位論文 前1條
1 黃世海;CI～-對原油罐底板腐蝕分析與防護(hù)[D];蘭州理工大學(xué);2006年
，本文編號(hào)：2291598
本文鏈接：http://sikaile.net/kejilunwen/jiagonggongyi/2291598.html
最近更新
教材專著
