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Thermal analysis of coatings and substrate materials during a disruption in fusion reactors

机译：聚变反应堆破裂期间涂层和基材的热分析

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Abstract: In a tokamak fusion reactor, the frequency of occurrence and the severity of a plasma disruption event will determine the lifetime of the plasma facing components. Disruptions are plasma instabilities which result in rapid loss of confinement and termination of plasma current. Intense energy fluxes to components like the first wall and the diverter plate are expected during the disruptions. This high energy deposition in short times may cause severe surface erosion of these components resulting from melting and vaporization. Coatings and tile materials are proposed to protect and maintain the integrity of the underneath structural materials from both erosion losses as well as from high thermal stresses encountered during a disruption. The coating thickness should be large enough to withstand both erosion losses and to reduce the temperature rise in the substrate structural material. The coating thickness should be minimized to enhance the structural integrity, to reduce potential problems from radioactivity, and to minimize materials cost. !15
机译：摘要：在托卡马克聚变反应堆中，等离子体破坏事件的发生频率和严重程度将决定面向等离子体的组件的寿命。破坏是等离子体的不稳定性，其导致约束的迅速丧失和等离子体电流的终止。在破坏过程中，预计会向第一壁和分流板等组件发出强烈的能量通量。短时间内的这种高能量沉积可能会由于熔化和汽化而导致这些组件的严重表面腐蚀。建议使用涂料和瓷砖材料来保护和维持下面的结构材料的完整性，以免受到侵蚀损失以及在破坏过程中遇到的高热应力的影响。涂层厚度应足够大，以承受侵蚀损失并减少基材结构材料中的温度升高。涂层厚度应最小化，以增强结构完整性，减少放射性带来的潜在问题，并使材料成本最小化。 ！15

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