摘要
钢制安全壳是AP1000和CAP1400核电站的第三道防线,也是核电站的最外层防护,其作用尤为重要。因此安全壳上涂装的涂料,需要有效的提高抗腐蚀性能,延长服役寿命。对于采用非能动安全系统的核电站安全壳,除了要满足核电专用涂料的耐辐照、耐化学腐蚀、耐盐雾等性能要求外,还必须具备满足规定的传热性、附着力和润湿性等要求。本研究采用自然老化的方式研究涂料在自然老化前后的性能变化,自然老化在核电站附近的暴晒场进行,其环境因素与实际环境相同。本文较系统的研究了安全壳涂料经过自然老化后的微观结构、形貌、厚度、结合力、润湿性、热导率和电化学性能。
Steel containment plays an important role in the AP1000 and CAP1400 nuclear reactors.It is not only the third-line defense but also the outermost protection of reactors.The coatings on steel con-tainment should improve the corrosion resistance and prolong the service life of reactors at the same time.The coatings should also meet the Wrequirements of diathermancy,adhesive force and wettability besides the irradiation resistance,chemical resistance and salt spray resistance.The performance changes of coatings before and after natural aging were studied with the method of natural aging.The natural aging was carried out in the exposure field near the nuclear power plant,of which the environmental factors were the same as the actual environment.Microstructure,sur-face appearance,bonding strength,wettability,thermal conductivity and electrochemical perfor-mance after natural ageing were systematically analyzed in our study.
出处
《材料科学》
CAS
2019年第9期878-889,共12页
Material Sciences
基金
国核示范电站有限责任公司资助课题“安全壳涂料性能验证及加速老化评价研究”(SPDP-PZ-G80Y-20150022)。
