CAJ | 학술논문

目的：研究钢制安全壳内外壁面无机富锌涂层在极限设计基准事故工况下的特性,为设计验证和非能动安全壳冷却系统热工水力试验边界条件的确定提供数据支持。方法参照大破口失水事故工况下可能形成的物理环境设计试验：试件置于恒温炉加热至160℃,待整体温度均匀后,迅速浸入20℃冷水中冷却,待冷却至常温后,再浸入100℃沸水中加热60 min。测试涂层经过事故工况前后的导热性、干膜厚度、表面形貌和附着力,分析事故工况对这些性能的影响。结果模拟事故工况前后,涂层的干膜厚度在70~130μm范围,附着力在8.5~13.5 MPa范围,热导率升高了6.8%,表面形貌无明显变化。结论模拟事故工况前后,涂层的干膜厚度、表面形貌和附着力无明显变化,涂层热导率有微升趋势。
목적：연구강제안전각내외벽면무궤부자도층재겁한설계기준사고공황하적특성,위설계험증화비능동안전각냉각계통열공수력시험변계조건적학정제공수거지지。방법삼조대파구실수사고공황하가능형성적물리배경설계시험：시건치우항온로가열지160℃,대정체온도균균후,신속침입20℃랭수중냉각,대냉각지상온후,재침입100℃비수중가열60 min。측시도층경과사고공황전후적도열성、간막후도、표면형모화부착력,분석사고공황대저사성능적영향。결과모의사고공황전후,도층적간막후도재70~130μm범위,부착력재8.5~13.5 MPa범위,열도솔승고료6.8%,표면형모무명현변화。결론모의사고공황전후,도층적간막후도、표면형모화부착력무명현변화,도층열도솔유미승추세。
Objective To investigate the characteristics of IOZ coating for passive containment after design basis accident, so as to provide data support to the design of passive containment. Methods The physical environment of test was designed refer to the working condition of the DBA:specimen in the thermostatic oven heated to 160 ℃ until temperature uniformity, then immersed in 20 ℃ water. After cooling to room temperature, the samples were immersed in 100℃ water for 60 minutes. The impact of DBA for coating was studied, and the main characteristics of the IOZ coating were thermal conductivity, dry film thickness, surface mor-phology, adhesion, etc. Results After the test, the DFT of the coating was 70~130 microns, the adhesion was 8. 5~13. 5 MPa, and thermal conductivity increases by 6. 8%, but the surface morphology was unchanged. Conclusion After DBA, the DFT, sur-face morphology and adhesion was unchanged, but the thermal conductivity was edge up.