【摘 要】
：
The modified zinc phosphate conversion coatings(ZPC) were formed on hot-dip galvanized(HDG) steel when 1.0 g/L sodium molybdate were added in a traditional zinc
【机 构】
：
School of Materials Science and Engineering
论文部分内容阅读
The modified zinc phosphate conversion coatings(ZPC) were formed on hot-dip galvanized(HDG) steel when 1.0 g/L sodium molybdate were added in a traditional zinc phosphate solution. The growth performance and corrosion resistance of the modified ZPC were investigated by SEM, open circuit potential(OCP), mass gain, potentiodynamic polarization and electrochemical impedance spectroscopy(EIS) measurements and compared with those of the traditional ZPC. The results show that if sodium molybdate is added in a traditional zinc phosphate solution, the nucleation of zinc phosphate crystals is increased obviously; zinc phosphate crystals are changed from bulky acicular to fine flake and a more compact ZPC is obtained. Moreover, the mass gain and coverage of the modified ZPC are also boosted. The corrosion resistance of ZPI is increased with an increase in coverage, and thus the corrosion protection ability of the modified ZPC for HDG steel is more outstanding than that of the traditional ZPC.
其他文献
利用2种DNA提取方法获得了粗柄鸡枞菌(Termitomyces robustus)总DNA,并比较了两类方法之间的提取效果,利用分子生物学方法扩增并克隆出粗柄鸡枞菌长632bp的ITS区序列,为以后
目的 评价长脉冲激光对不同肤色脱毛的疗效和安全性.方法 用波长755 nm和1 064 nm的激光对607例不同肤色患者脱毛4次后观察疗效及出现的不良反应.结果 两种激光对女性唇部体
A series of W-type ferrites with the composition of Ba1-xLaxCo2Fe16O27 (where, x=0.0, 0.05, 0.10, 0.15, 0.20 and 0.25) were prepared by solid-state reaction met
吡喹酮作为当前治疗血吸虫病的首选药物,对所有种类的血吸虫均有疗效且副作用甚微,临床应用已达30余年,但其作用机制至今尚未完全阐明.研究表明吡喹酮抗血吸虫作用与Ca~(2+)
在高海拔的农牧交错地区建设肉羊养殖小区是农牧民脱贫致富的有效途径之一.临潭县在农业综合开发项目支持下,通过科学规划,选择典型农户,建设日光暖棚,实施围栏放牧和人工草
A cerium-based chemical conversion process was studied. First, zinc coating obtained from a free-cyanide alkaline bath, with derivative of imidazol with new bri
为了解决个性化搜索技术所潜在的用户隐私信息泄露的问题,提出了用户兴趣模型匿名化方法.首先根据用户兴趣模型之间的相似性将其聚类为满足p-链接性的等价组,然后计算聚类后
Gas chromatography-mass spectrometry(GC-MS)and the chemometric resolution method(alternative moving window factor analysis,AMWFA)were used for comparative analy
The isothermal section at 927 ℃ of the Cr-Ni-Ti system was established using a high-efficiency diffusion couple approach, supplemented with eight equilibrated
Ball mixing and electroless plating were respectively used as the adding methods of metallic phase to prepare Ni/(90NiFe2O4-10NiO) cermets for the inert anode i