原子能科学技术2012，Vol.46Issue(8)：972-977,6.
Al-B4C复合材料在硼酸溶液中腐蚀机理研究
Corrosion Mechanism of Al-B4C Composite Materials in Boric Acid
摘要
Abstract
A boric acid solution was used to simulate the environment of actual spent fuel storage. The corrosion behaviors of A1-B4C composite materials in boric acid solutions were investigated. The microscopic morphology was observed by SEM and EDS. The phases of samples before and after the corrosion tests were measured by XRD and the dry weight of the samples was also measured. The results show that the corrosion is caused by aluminum in the A1-B4C composite; a dense layer of A1(OH)3 is formed after corrosion test in boric acid solution at 0 to 500 ppm and the samples gain weight after corrosion test; an amorphous A1(OH)3 sediments with wadding structure are found after corrosion in boric acid solution at 2 500 ppm and the samples also gain weight; some local areas appeared chapped and the corroded pits can be observed after corrosion in boric solution at 10 000 to 25 000 ppm and the samples lost weight. The corrosion resistance decreases with the increasing of concentration of boric acid. In order to improve the corrosion resistance, it is necessary to make a surface protection on A1-B4C composite.关键词
Al-B4C复合材料/硼酸/腐蚀/物相/干重Key words
A1-B4C composite materialj boric acid/ corrosion/ phase/ dry weight分类
矿业与冶金引用本文复制引用
石建敏,沈春雷,张玲,雷家荣,龙兴贵,周晓松..Al-B4C复合材料在硼酸溶液中腐蚀机理研究[J].原子能科学技术,2012,46(8):972-977,6.基金项目
中国工程物理研究院军民两用重大项目资助(JMZD200903) （JMZD200903）
2010年度四川省学术和技术带头人培养资金资助项目 （）
