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An evaluation of Acacia mearnsiiAcacia mearnsii tannin as an aluminum corrosion inhibitor in acid, alkaline, and neutral media

机译:评估 金合欢mearnsii 金合欢mearnsii 单宁作为酸,碱性和中性介质中的铝腐蚀抑制剂

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Abstract > The electrochemical behavior of aluminum in tannin from Acacia mearnsii bark was evaluated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) in media under three different pH conditions: acid, alkaline, and neutral. A relationship among pH, polymerization grade (PG), zeta potential, surface, and electrochemical properties was observed in the inhibition performance of the tannin. At high pH, the oligomer structure of the tannin was affected, resulting in a low PG (4) and high zeta potential (?75?mV), and consequently, the inhibition efficiency decreased (68%) in comparison with that in acid (99%) and neutral media (96%). The <mat:math altimg="urn:x-wiley:09475117:media:maco201911407:maco201911407-math-0001" wiley:location="equation/maco201911407-math-0001.png"> <mat:msubsup> <mat:mrow> <mat:mi mathvariant="normal">Δ</mat:mi> <mat:mi>G</mat:mi> </mat:mrow> <mat:mrow> <mat:mi mathvariant="normal">a</mat:mi> <mat:mi mathvariant="normal">d</mat:mi> <mat:mi mathvariant="normal">s</mat:mi> </mat:mrow> <mat:mn>0</mat:mn> </mat:msubsup> </mat:math> values obtained indicate a physisorption mechanism for the aluminum corrosion inhibition in the studied conditions. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译:</span><Abstract Type =“Main”XML:Lang =“en”> <标题类型=“main”>抽象</ title> > 铝中铝的电化学行为 金合欢mearnsii </ i> 通过在三种不同pH条件下的培养基中的电位显微偏振曲线和电化学阻抗光谱(EIS)评估吠叫:酸,碱性和中性。在单宁的抑制性能下观察到pH,聚合级(PG),Zeta电位,表面和电化学性质之间的关系。在高pH下,丹宁的低聚物结构受到影响,导致低pg(4)和高Zeta电位(α75≤mV),因此,与酸中的抑制效率降低(68%)( 99%)和中性介质(96%)。这 <MAT:MATH ALTIMG =“URN:X-Wiley:09475117:MACO201911407:MACO201911407-MATH-0001”WIley:Location =“等式/ MACO201911407-MATH-0001.PNG”> <mat:msubsup> <MAT:MROW> <mat:mi mathvariant =“正常”>δ</ mat:mi> <MAT:MI> G </ MAT:MI> </ mat:MROW> <MAT:MROW> <mat:mi mathvariant =“正常”> a </ mat:mi> <mat:mi mathvariant =“正常”> d </ mat:mi> <mat:mi mathvariant =“正常”> s </ mat:mi> </ mat:MROW> <MAT:MN> 0 </ MAT:MN> </ mat:msubsup> </ mat:math> 所获得的值表明了研究病症中铝腐蚀抑制的理由机制。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-24514/'>《Materials and Corrosion》</a> <b style="margin: 0 2px;">|</b><span>2020年第7期</span><b style="margin: 0 2px;">|</b><span>共15页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/7194.html" title="金属腐蚀与保护、金属表面处理">金属腐蚀与保护、金属表面处理;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=aluminum&option=203" rel="nofollow">aluminum;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=corrosion&option=203" rel="nofollow">corrosion;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=EIS&option=203" rel="nofollow">EIS;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=MALDI–TOF MS&option=203" rel="nofollow">MALDI–TOF MS;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=pH effect&option=203" rel="nofollow">pH effect;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=tannin&option=203" rel="nofollow">tannin;</a> </p> <div class="translation"> 机译:铝;腐蚀;EIS;MALDI-TOF MS;pH效果;单宁; 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