文献类型：期刊文献

中文题名：6061铝合金硅烷-氟钛酸盐复合膜的最佳制备工艺及耐蚀性

英文题名：Optimized Process Technology and Corrosion Resistance for Silane and Hexafluorotitanate Composite Film on 6061 Aluminum Alloy

作者：张伟娜[1];李春玲[1];娄淑芳[1];李红玲[2]

第一作者：张伟娜

机构：[1]商丘医学高等专科学校基础部;[2]新乡学院化学化工学院

第一机构：商丘医学高等专科学校基础部,河南商丘476000

年份：2018

卷号：51

期号：1

起止页码：67-71

中文期刊名：材料保护

外文期刊名：Materials Protection

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：河南省科技发展计划项目(1521023102122);新乡学院科技创新基金(15ZC16)资助

语种：中文

中文关键词：6061铝合金;硅烷.氟钛酸盐复合膜;正交试验;中性盐雾试验;极化曲线

外文关键词：6061 aluminum alloys; silane and hexafluorotitanate composite film; orthogonal test; neutral salt spray test; polarization curve

摘要：为了增强6061铝合金基体的耐蚀性,以盐雾试验后试样腐蚀面积作为评价指标,采用正交试验优选出以钛盐和H2O2为促进剂的铝合金氟钛酸盐协同硅烷复合膜的最佳制备工艺条件:钛盐5 g/L,氟化钠6 g/L,H2O210 m L/L,pH值为4,常温下浸涂60 min。在该工艺条件下制备出的复合膜具有较好的耐蚀性。通过极化曲线、中性盐雾试验分析比较了硅烷-氟钛酸盐复合膜和单一硅烷膜的耐蚀性能,并通过扫描电镜观察了膜层的表面形貌。结果表明:硅烷-氟钛酸盐复合膜可以降低6061铝合金的腐蚀速率,对铝合金基体有较好的保护作用。
In order to enhance the corrosion resistance of 6061 aluminum alloy, the optimal formula and technological parameters of hexafluo- rotitanate-synergetic silane composite film were obtained through orthogonal tests, with the corrosion area of samples after salt spray test as evaluation index. Results showed that the optimized process technology was as follows： 5 g/L hexafluorotitanium salt, 6 g/L NaF, 10 mL/L H2O2, pH value of 4, room temperature and processing time of 60 min. The prepared composite film had good corrosion resistance. Besides, the corrosion resistance of the hexafluorotitanate-synergetic silane composite film and the single silane film was analyzed and compared by means of polarization curve and neutral salt spray test and surface SEM morphology observation, which illustrated that the corrosion rate of the 6061 aluminum alloy was reduced and the corrosion resistance was improved due to the formation of silane and hexafluorotitanate composite film.