本文主要研究内容
作者王美茹（2019）在《氨水和氢氧化钠污染粉土对X80钢的腐蚀试验研究》一文中研究指出：本文通过室内模拟试验,主要采用电化学阻抗谱（EIS）,极化曲线（PC）和扫描电镜等主要测试和研究手段,研究了氢氧化钠和氨水两种碱性污染粉土对X80钢的腐蚀行为,揭示了其腐蚀机理。通过X80钢的电化学阻抗谱（EIS）测试分析得到:在氨水污染粉土中X80钢腐蚀规律为:在测试通电01h时,随着浓度的增加低频段容抗弧半径逐渐减小;在324h,随浓度的增加,容抗弧半径逐渐增大;介质电阻Rs和电荷转移电阻Rct随氨水浓度的增加,总体呈现减小的趋势;电荷转移电阻Rct随通电腐蚀时间的增加总体呈现减小的趋势。在氢氧化钠污染粉土中的X80钢,在同一通电时间下,随氢氧化钠浓度的增加,低频段容抗弧半径逐渐减小;介质电阻Rs和电荷转移电阻Rct随氨水浓度的增加,总体呈现减小的趋势;电荷转移电阻Rct随通电腐蚀时间的增加总体呈现减小的趋势。由氨水污染粉土中X80钢的极化曲线（PC）测试可分析得出:极化曲线随着浓度的增加右移,在较高浓度时逐渐呈现随浓度增加左移的现象。拟合结果显示,随着腐蚀时间的增加,在低浓度时腐蚀速率逐渐加快,在高浓度时腐蚀速率在小范围内波动且小幅上升;由氢氧化钠污染土中X80钢的极化曲线测试分析可知,随着通电腐蚀时间的增加,在低浓度（0.5%）时极化曲线呈现右移的趋势,在较高浓度（0.7%）时极化曲线重合率较高,在1%时,通电腐蚀124h时呈现左移趋势;拟合结果显示,随着氢氧化钠浓度的增加,腐蚀速率总体呈现逐渐增大的规律。由X80钢的腐蚀宏微观图像可得出:在未污染土中X80钢的腐蚀面积较大,腐蚀产物堆积较厚,但不致密;在浓度为0.5%和0.7%的氨水污染土中,腐蚀产物面积较未污染土减小,腐蚀斑腐蚀程度不均匀,0.7%时仅有腐蚀斑中个别点出现较多松散的腐蚀产物,且出现裂纹;在浓度为1%的氨水污染粉土中埋置的X80钢腐蚀面积较小,但在腐蚀斑上腐蚀均匀且腐蚀产物致密,未出现脱落和突起现象。在浓度为0.5%的氢氧化钠污染土中,腐蚀坑相对较小,腐蚀产物较薄;0.7%时腐蚀坑更大,颜色更深,腐蚀产物堆积较多,但表面出现大量裂缝,不致密,没有明显的脱落迹象;在浓度为1%时,腐蚀产物较之前堆积更厚,且致密、平整,个别点出现轻微脱落、松散迹象。对两种碱性污染土进行对比分析可知:氨水污染土中的阻抗容抗弧半径大于氢氧化钠污染土中的阻抗容抗弧。氢氧化钠污染粉土中X80钢试件的极化曲线较氨水污染粉土中X80钢的极化曲线右移,氨水污染粉土对X80钢的腐蚀速率更快;在0.5%浓度时,腐蚀初期呈现与上述相同的规律,但当通电腐蚀时间不断增加时,两种污染物的阻抗谱半径逐渐接近于重合,极化曲线同样逐渐靠近直至重合。即在浓度为0.5%时,经过一段时间的通电腐蚀,氨水和氢氧化钠对X80钢的腐蚀速率基本保持一致。
Abstract
ben wen tong guo shi nei mo ni shi yan ,zhu yao cai yong dian hua xue zu kang pu （EIS）,ji hua qu xian （PC）he sao miao dian jing deng zhu yao ce shi he yan jiu shou duan ,yan jiu le qing yang hua na he an shui liang chong jian xing wu ran fen tu dui X80gang de fu shi hang wei ,jie shi le ji fu shi ji li 。tong guo X80gang de dian hua xue zu kang pu （EIS）ce shi fen xi de dao :zai an shui wu ran fen tu zhong X80gang fu shi gui lv wei :zai ce shi tong dian 01hshi ,sui zhao nong du de zeng jia di pin duan rong kang hu ban jing zhu jian jian xiao ;zai 324h,sui nong du de zeng jia ,rong kang hu ban jing zhu jian zeng da ;jie zhi dian zu Rshe dian he zhuai yi dian zu Rctsui an shui nong du de zeng jia ,zong ti cheng xian jian xiao de qu shi ;dian he zhuai yi dian zu Rctsui tong dian fu shi shi jian de zeng jia zong ti cheng xian jian xiao de qu shi 。zai qing yang hua na wu ran fen tu zhong de X80gang ,zai tong yi tong dian shi jian xia ,sui qing yang hua na nong du de zeng jia ,di pin duan rong kang hu ban jing zhu jian jian xiao ;jie zhi dian zu Rshe dian he zhuai yi dian zu Rctsui an shui nong du de zeng jia ,zong ti cheng xian jian xiao de qu shi ;dian he zhuai yi dian zu Rctsui tong dian fu shi shi jian de zeng jia zong ti cheng xian jian xiao de qu shi 。you an shui wu ran fen tu zhong X80gang de ji hua qu xian （PC）ce shi ke fen xi de chu :ji hua qu xian sui zhao nong du de zeng jia you yi ,zai jiao gao nong du shi zhu jian cheng xian sui nong du zeng jia zuo yi de xian xiang 。ni ge jie guo xian shi ,sui zhao fu shi shi jian de zeng jia ,zai di nong du shi fu shi su lv zhu jian jia kuai ,zai gao nong du shi fu shi su lv zai xiao fan wei nei bo dong ju xiao fu shang sheng ;you qing yang hua na wu ran tu zhong X80gang de ji hua qu xian ce shi fen xi ke zhi ,sui zhao tong dian fu shi shi jian de zeng jia ,zai di nong du （0.5%）shi ji hua qu xian cheng xian you yi de qu shi ,zai jiao gao nong du （0.7%）shi ji hua qu xian chong ge lv jiao gao ,zai 1%shi ,tong dian fu shi 124hshi cheng xian zuo yi qu shi ;ni ge jie guo xian shi ,sui zhao qing yang hua na nong du de zeng jia ,fu shi su lv zong ti cheng xian zhu jian zeng da de gui lv 。you X80gang de fu shi hong wei guan tu xiang ke de chu :zai wei wu ran tu zhong X80gang de fu shi mian ji jiao da ,fu shi chan wu dui ji jiao hou ,dan bu zhi mi ;zai nong du wei 0.5%he 0.7%de an shui wu ran tu zhong ,fu shi chan wu mian ji jiao wei wu ran tu jian xiao ,fu shi ban fu shi cheng du bu jun yun ,0.7%shi jin you fu shi ban zhong ge bie dian chu xian jiao duo song san de fu shi chan wu ,ju chu xian lie wen ;zai nong du wei 1%de an shui wu ran fen tu zhong mai zhi de X80gang fu shi mian ji jiao xiao ,dan zai fu shi ban shang fu shi jun yun ju fu shi chan wu zhi mi ,wei chu xian tuo la he tu qi xian xiang 。zai nong du wei 0.5%de qing yang hua na wu ran tu zhong ,fu shi keng xiang dui jiao xiao ,fu shi chan wu jiao bao ;0.7%shi fu shi keng geng da ,yan se geng shen ,fu shi chan wu dui ji jiao duo ,dan biao mian chu xian da liang lie feng ,bu zhi mi ,mei you ming xian de tuo la ji xiang ;zai nong du wei 1%shi ,fu shi chan wu jiao zhi qian dui ji geng hou ,ju zhi mi 、ping zheng ,ge bie dian chu xian qing wei tuo la 、song san ji xiang 。dui liang chong jian xing wu ran tu jin hang dui bi fen xi ke zhi :an shui wu ran tu zhong de zu kang rong kang hu ban jing da yu qing yang hua na wu ran tu zhong de zu kang rong kang hu 。qing yang hua na wu ran fen tu zhong X80gang shi jian de ji hua qu xian jiao an shui wu ran fen tu zhong X80gang de ji hua qu xian you yi ,an shui wu ran fen tu dui X80gang de fu shi su lv geng kuai ;zai 0.5%nong du shi ,fu shi chu ji cheng xian yu shang shu xiang tong de gui lv ,dan dang tong dian fu shi shi jian bu duan zeng jia shi ,liang chong wu ran wu de zu kang pu ban jing zhu jian jie jin yu chong ge ,ji hua qu xian tong yang zhu jian kao jin zhi zhi chong ge 。ji zai nong du wei 0.5%shi ,jing guo yi duan shi jian de tong dian fu shi ,an shui he qing yang hua na dui X80gang de fu shi su lv ji ben bao chi yi zhi 。
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论文作者分别是来自太原理工大学的王美茹，发表于刊物太原理工大学2019-07-26论文，是一篇关于氨水论文,氢氧化钠论文,污染粉土论文,电化学阻抗谱论文,极化曲线论文,太原理工大学2019-07-26论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自太原理工大学2019-07-26论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：氨水论文; 氢氧化钠论文; 污染粉土论文; 电化学阻抗谱论文; 极化曲线论文; 太原理工大学2019-07-26论文;