信阳师范学院学报（自然科学版）Issue(2)：259-262,4.DOI:10.3969/j.issn.1003-0972.2014.02.024
恐龙化石保护材料的耐蚀性能
Corrosion Properties of Protective Materials on Dinosaur Fossil
摘要
Abstract
The protective materials with nano silicon dioxide additives for dinosaur fossils were prepared by blend-ing and in-situ aggregation methods. Two protective materials were coated on steel discs, respectively. Then the discs were soaked and corroded in 3. 5% sodium chloride solution. Next, the corrosion potential and current, alternating current impedance and weightless corrosion rate were measured. The dispersibility and thermal degradation of the pro-tective materials were measured by SPM and DSC. The results showed that the corrosion current of the protective mate-rials prepared by blending and in situ aggregation method was 3. 481 × 10 -7 A/cm2 and 2. 332 × 10 -6 A/cm2 ,respec-tively. The corrosion current of nitrocellulose varnish was 4. 181 × 10 -6 A/cm2 . The corrosion rate of the protective materials prepared by blending method was one tenth of that of nitrocellulose varnish. The weightless corrosion rates of the three kinds of protective materials were 1. 18 g/(m2·h), 1. 19 g/(m2·h) and 1. 29 g/(m2·h), respectively. The corrosion resistance of the protective materials prepared by blending method was the best, which was surpported by the test results of alternating current impedance. When processing water soluble protective materials with 4% nano SiO2 , the heat resistance and dispersibility of the materials prepared by blending method were better than those of the materials prepared by in situ aggregation method. The coating adhesion of both kinds of materials is the first grade.关键词
恐龙化石/保护材料/纳米SiO2/耐蚀性Key words
dinosaur fossils/protective coating/nano-SiO2/anti-corrosion分类
化学化工引用本文复制引用
邓建国,刘东亮,余祖孝..恐龙化石保护材料的耐蚀性能[J].信阳师范学院学报（自然科学版）,2014,(2):259-262,4.基金项目
腐蚀与防护四川省重点实验室项目（2011CL12）；四川理工学院自然科学培养项目 （）
