Al-based anti-corrosion and T-permeation barrier development for future DEMO blankets
Al-based anti-corrosion and T-permeation barrier development for future DEMO blankets
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DOI：
10.1016/j.jnucmat.2010.12.278
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发表时间：
2011-10
影响因子：
3.1
通讯作者：
W. Krauss;J. Konys;N. Holstein;H. Zimmermann
中科院分区：
文献类型：
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作者：
W. Krauss;J. Konys;N. Holstein;H. Zimmermann
在用于未来聚变发电厂的试验包层模块（TBM）的氦冷液铅（HCLL）设计中，Pb-15.7Li用作与结构材料（例如EUROFER钢）直接接触的液体增殖剂。相容性测试表明，出现了高腐蚀侵蚀，溶解的钢成分形成沉淀物，具有系统堵塞的高风险。可靠的操作需要涂层作为腐蚀屏障。早期开发的热浸镀铝（HDA）工艺表明，铝基氧化皮可以作为防腐蚀和防T渗透屏障。同时，成功地开发了两种先进的电化学沉积铝膜的工艺。第一种（ECA=电化学Al沉积）是用有机电解质进行的，第二种（ECX=电化学X金属沉积）是基于离子液体的。在μ m范围内的涂层沉积均匀，具有精确可控的厚度。冶金学研究表明成功生成了保护性氧化皮，相容性测试证明了屏障功能。
In the Helium-Cooled-Liquid-Lead (HCLL) design of Test-Blanket-Modules (TBM’s) for a future fusion power plant Pb–15.7Li is used as liquid breeder which is in direct contact with the structure material, e.g. EUROFER steel. Compatibility testing showed that high corrosion attack appears and that the dissolved steel components form precipitates with a high risk of system blockages. A reliable operation needs coatings as corrosion barriers. The earlier developed Hot-Dip Aluminisation (HDA) process has shown that Al-based scales can act as anti-corrosion as well as T-permeation barriers. Meanwhile two advanced electro-chemically based processes for deposition of Al-scales were successfully developed. The first (ECA=Electro-Chemical Al-deposition) is working with an organic electrolyte and the second one (ECX=Electro-Chemical-X-metal-deposition) is based on ionic liquids. Coatings in the μm-range were deposited homogeneously with exact controllable thicknesses. Metallurgical investigations showed the successful generation of protective scales and compatibility testing demonstrated the barrier function.