【摘要】：鎂合金是21世紀(jì)最富開發(fā)和應(yīng)用潛力的優(yōu)異綠色工程材料之一,但耐蝕性差成為制約其廣泛應(yīng)用的瓶頸。選擇和開發(fā)合適的表面防護(hù)涂層可以有效提高鎂合金表面的耐蝕性能。溶膠-凝膠涂層技術(shù)憑借其工藝簡單、膜層成分結(jié)構(gòu)可控、耐蝕性能優(yōu)良等優(yōu)點(diǎn)近年來在鎂合金表面的腐蝕防護(hù)應(yīng)用中得到重視。將用溶膠-凝膠技術(shù)在鎂合金表面制備防腐蝕涂層的研究成果按照有機(jī)/無機(jī)雜化涂層、緩蝕因子/雜化涂層、電化學(xué)氧化/雜化涂層、化學(xué)轉(zhuǎn)化/雜化涂層的分類方法進(jìn)行了分析總結(jié)。這些涂層體系各具特色,其中含緩蝕因子的雜化涂層具備自修復(fù)能力,化學(xué)轉(zhuǎn)化和電化學(xué)氧化雜化涂層的附著力突出,而單一涂層更容易破壞。在未來,鎂合金表面溶膠-凝膠防護(hù)涂層的研究工作仍以有效結(jié)合現(xiàn)有的表面處理技術(shù)開發(fā)長效高耐蝕復(fù)合涂層為重心。
[Abstract]:Magnesium alloy is one of the most promising green engineering materials in the 21st century, but its poor corrosion resistance is the bottleneck of its wide application. The corrosion resistance of magnesium alloy surface can be improved by selecting and developing suitable surface protective coating. Sol-gel coating technology has been paid attention to in recent years in the application of corrosion protection of magnesium alloy surface due to its simple process, controllable composition of film, excellent corrosion resistance and so on. The results of the preparation of corrosion resistant coatings on magnesium alloys by sol-gel technology are as follows: organic / inorganic hybrid coatings, corrosion inhibition factors / hybrid coatings, electrochemical oxidation / hybrid coatings, The classification methods of chemical conversion / hybrid coatings were analyzed and summarized. The hybrid coatings with corrosion inhibition factor have self-repairing ability. The adhesion of chemical conversion and electrochemical oxidation hybrid coatings is prominent, while the single coating is more easily destroyed. In the future, the research work of sol-gel protective coating on magnesium alloy surface is still focused on the development of long-effect and high-corrosion resistant composite coating effectively combined with the existing surface treatment technology.
【作者單位】： 重慶科技學(xué)院冶金與材料工程學(xué)院;重慶市計(jì)量質(zhì)量檢測研究院/國家鋁鎂合金及制品質(zhì)量監(jiān)督檢測中心;重慶交通大學(xué)機(jī)電與車輛工程學(xué)院;
【基金】：重慶市基礎(chǔ)與前沿研究計(jì)劃項(xiàng)目(cstc2015jcyjA 50003) 重慶市教委科學(xué)技術(shù)研究項(xiàng)目(KJ1401314;KJ1401310) 重慶科技學(xué)院院士專家工作站合作項(xiàng)目(CKYS2014Z03);重慶科技學(xué)院重點(diǎn)項(xiàng)目培育基金(CK2014Z22);重慶科技學(xué)院第八屆大學(xué)生科技創(chuàng)新訓(xùn)練計(jì)劃項(xiàng)目(No.35)資助 重慶市南川區(qū)科技計(jì)劃項(xiàng)目(CX201407)
【分類號】：TG174.4

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