CAJ | 학술논문

室温下，以Ti（S04）22-6g／L，H2021-2g／L，NaF3-5g／L，EDTA2-6g／L为转化液的主要成分，加入1-2g／LCe（N03）3 ．6H20促进转化膜的致密性和均匀性，控制转化液pH4．0-4．5，转化处理10min，在样品表面制备一层化学转化膜．通过中性盐雾测试和电化学测试表征转化膜的耐蚀性，采用冷场发射扫描电镜（SEM）观察转化膜的微观形貌，X射线能谱仪（EDS）分析转化膜的化学成分．结果表明：该转化膜耐蚀性优艮，EDS能谱分析得出这层颗粒状物质主要由Na，A1，F元素和少量的Mg，Ti，O元素组成，推断转化膜的主要成分为Na3AIF6，铈盐起到促进转化膜致密性和均匀性的作用．
실온하，이Ti（S04）22-6g／L，H2021-2g／L，NaF3-5g／L，EDTA2-6g／L위전화액적주요성분，가입1-2g／LCe（N03）3 ．6H20촉진전화막적치밀성화균균성，공제전화액pH4．0-4．5，전화처리10min，재양품표면제비일층화학전화막．통과중성염무측시화전화학측시표정전화막적내식성，채용랭장발사소묘전경（SEM）관찰전화막적미관형모，X사선능보의（EDS）분석전화막적화학성분．결과표명：해전화막내식성우간，EDS능보분석득출저층과립상물질주요유Na，A1，F원소화소량적Mg，Ti，O원소조성，추단전화막적주요성분위Na3AIF6，시염기도촉진전화막치밀성화균균성적작용．
In order to form a chemical conversion film on aluminum alloy surface, a process was investigated with cereous nitrate as corrosion inhibitor, sodium fluoride as accelerant, and hydrogen peroxide as oxidant in the treating solution. The ph was adjusted to 4.0-4.5, and aluminum alloys were treated 10 rain. Corrosion performance was examined by salt spay and electrochemical test, micro-structure of the conversion film was shown by SEM, and EDS was used to analyze main components of the conversion film. The results show the conversion coating has high corrosion resistance; energy spectroscopy analysis indicates the conversion coating was mainly made up of F, A1, Na elements, with a trace of Mg, O, and Ti. The major components of conversion coating was chemical compound, Na3AIF6, and cerium salt makes conversion coating compacter and more homogeneous.