本文選題：銅合金　切入點：溶膠-凝膠涂層　出處：《中國腐蝕與防護(hù)學(xué)報》2016年01期 　論文類型：期刊論文

【摘要】：以巰基丙基三甲氧基硅烷(MPTMS)為有機(jī)前驅(qū)體,以正硅酸四乙酯(TEOS)為無機(jī)前驅(qū)體,鹽酸為催化劑,經(jīng)水解-縮合反應(yīng)在Cu合金H62表面制備了高固含量的有機(jī)-無機(jī)雜化溶膠-凝膠涂層。利用紅外光譜儀、動態(tài)光散射粒度分析儀對涂層的化學(xué)成分和溶膠粒子的平均直徑進(jìn)行表征,利用SEM觀察涂層的表面和截面形貌,利用拉脫法附著力測試儀和電化學(xué)工作站對涂層的附著力和耐蝕性進(jìn)行表征。結(jié)果表明:TEOS的加入有利于提高涂層的熱穩(wěn)定性。隨著TEOS含量的增加,溶膠粒子的尺寸呈上升趨勢,過量的TEOS會使涂層表面和內(nèi)部產(chǎn)生孔洞和裂紋等缺陷。當(dāng)TEOS和MPTMS的摩爾比為0.6時,涂層的交聯(lián)密度較大且涂層缺陷較少,涂層的耐蝕性最佳。
[Abstract]:Using mercapto propyl trimethoxy silane as organic precursor, tetraethyl orthosilicate as inorganic precursor, hydrochloric acid as catalyst, Organic inorganic hybrid sol-gel coatings with high solid content were prepared on the surface of Cu alloy H62 by hydrolysis-condensation reaction. The chemical composition of the coating and the average diameter of the sol particles were characterized by dynamic light scattering particle size analyzer. The surface and cross-section morphology of the coating were observed by SEM. The adhesion and corrosion resistance of the coatings were characterized by a tensile and desorption adhesion tester and an electrochemical workstation. The results showed that the addition of 1: TEOS was beneficial to improve the thermal stability of the coatings. With the increase of TEOS content, the size of the sol particles increased. When the molar ratio of TEOS and MPTMS is 0.6, the cross-linking density of the coating is higher and the coating defect is less, the corrosion resistance of the coating is the best.
【作者單位】： 中北大學(xué)材料科學(xué)與工程學(xué)院;中國科學(xué)院寧波材料技術(shù)與工程研究所中國科學(xué)院海洋新材料與應(yīng)用技術(shù)重點實驗室浙江省海洋材料與防護(hù)技術(shù)重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃項目(2014CB643305) 國家自然科學(xué)基金項目(51202263和51335010) 浙江省“海洋防護(hù)材料與工程技術(shù)”科技創(chuàng)新團(tuán)隊項目(2011R50006) 寧波市自然科學(xué)基金項目(2014A610132)資助
【分類號】：TG174.4

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