本文選題：鋯鹽 + 化學(xué)轉(zhuǎn)化　； 參考：《表面技術(shù)》2017年08期

【摘要】：鋯鹽轉(zhuǎn)化膜技術(shù)是一種十分重要的環(huán)境友好型鋼鐵表面處理技術(shù),有望完全取代磷酸鹽和鉻酸鹽轉(zhuǎn)化技術(shù)。鋯鹽轉(zhuǎn)化膜的耐蝕性與磷酸鹽和鉻酸鹽轉(zhuǎn)化膜接近,對有機(jī)涂層和鋼鐵基體有著優(yōu)異的附著力。從純鋯鹽轉(zhuǎn)化基本原理、鋯鹽體系選擇、制備方法、轉(zhuǎn)化工藝參數(shù)控制、膜層形貌與結(jié)構(gòu)、膜層耐蝕行為、膜層與后續(xù)涂層的附著力等方面,對國內(nèi)外鋼鐵表面純鋯鹽轉(zhuǎn)化膜技術(shù)的研究進(jìn)展和成果進(jìn)行了綜述。純鋯鹽轉(zhuǎn)化技術(shù)采用的轉(zhuǎn)化液以氟鋯酸及其鹽為主,制備方法主要是浸漬法。為了獲得質(zhì)量穩(wěn)定的純鋯鹽轉(zhuǎn)化膜,需要控制工藝參數(shù):Zr~(4+)體積分?jǐn)?shù)3%~5%,pH值3.5~4.5,轉(zhuǎn)化時(shí)間90 s左右,溫度20~35℃。鋯鹽轉(zhuǎn)化膜一般為100~350 nm厚的雙層結(jié)構(gòu),由納米顆粒、小結(jié)節(jié)和聚集體構(gòu)成,這種結(jié)構(gòu)發(fā)揮的錨固作用會(huì)顯著增加基體與后續(xù)涂層的結(jié)合強(qiáng)度。但是,鋯鹽轉(zhuǎn)化成膜機(jī)理不夠成熟,工藝欠穩(wěn)定,在實(shí)際工業(yè)生產(chǎn)應(yīng)用中仍面臨挑戰(zhàn)。所以,成膜機(jī)制和工藝穩(wěn)定性的深入探究是未來鋯鹽轉(zhuǎn)化膜的重點(diǎn)研究方向。
[Abstract]:Zirconium salt conversion membrane technology is a very important environmental friendly surface treatment technology for iron and steel, which is expected to completely replace phosphate and chromate conversion technology. The corrosion resistance of zirconium salt conversion film is close to that of phosphate and chromate conversion film, and it has excellent adhesion to organic coating and steel substrate. The basic principles of pure zirconium salt conversion, the selection of zirconium salt system, the preparation method, the control of conversion process parameters, the morphology and structure of the film, the corrosion resistance of the film, the adhesion between the film and the subsequent coating, etc. The research progress and achievements of pure zirconium salt conversion membrane on iron and steel surface at home and abroad are reviewed. The conversion solution of pure zirconium salt is mainly fluorozirconic acid and its salt. In order to obtain the pure zirconium salt conversion film with stable quality, it is necessary to control the technological parameter: 1: ZrO4). The volume fraction of 3% Zirconium is 3%, the pH value is 3. 5%, the conversion time is about 90 s, and the temperature is 2035 鈩，

本文編號(hào)：1887562