本文選題：復(fù)合材料 + 脈沖電沉積　； 參考：《表面技術(shù)》2017年08期

【摘要】：目的制備具有良好電催化活性和耐腐蝕性能的Ti/Pb-WC-PANI復(fù)合材料,用作鋅電積過程中的電極材料,達到降低能耗的目的。方法在Ti基上采用脈沖電沉積法,以純鉛作為打底層,再沉積Pb-WC-PANI。通過對脈沖Pb-WC-PANI復(fù)合鍍層、直流Pb-WC-PANI復(fù)合鍍層、鉛銀合金以及純鉛的穩(wěn)態(tài)極化曲線、循環(huán)伏安曲線和電化學(xué)阻抗譜的對比分析,研究其析氧電催化活性,利用塔菲爾曲線研究其腐蝕性能。結(jié)果在電流密度2 A/dm~2,正向?qū)〞r間0.3 ms,周期1.5 ms,工作時間200 ms,磁力攪拌,25℃施鍍1.5 h的工藝條件下制備鉛底層,再在脈沖平均電流密度2 A/dm~2,脈寬0.3~0.5 ms,脈沖周期1.5 ms,25℃沉積1 h的工藝條件下鍍Pb-WC-PANI,得到Ti/Pb-WC-PANI復(fù)合材料。其開始析氧電位最低,在1.7 V左右,伏安電荷q~*=0.54 C/cm~2,腐蝕電位E_(corr)=-0.530 V(vs.SCE),腐蝕電流密度J_(corr)=6.90×10~(-4) A/cm~2。結(jié)論脈沖鍍Pb-WC-PANI復(fù)合材料可以有效地降低析氧電位,其伏安電荷最大,并且反應(yīng)阻抗較低,表面的電催化活性最好。同時,其腐蝕電位最高,腐蝕電流密度最低,耐腐蝕性能最好,在鋅電積模擬溶液中具有良好的綜合性能。
[Abstract]:Objective to prepare Ti / Pb-WC-PANI composite with good electrocatalytic activity and corrosion resistance, which can be used as electrode material in zinc electrodeposition process to reduce energy consumption. Methods Pb-WC-PANI was deposited on Ti substrate by pulse electrodeposition with pure lead as bottom layer. The electrocatalytic activity of Pb-WC-PANI composite coating, DC Pb-WC-PANI composite coating, Pb-WC-PANI composite coating, Pb-W@@ The corrosion performance of Taffel curve was studied. Results the lead substrate was prepared under the conditions of current density of 2 A / dm-2, forward conduction time of 0.3 Ms, period of 1.5 Ms, working time of 200 Ms and magnetic stirring at 25 鈩，

本文編號：2087408