Internally Oxidized Dispersion Strengthened Ag for High-Temperature Superconductor Composite Wires

9360646 Riley提出了使用内部氧化弥散强化银来强化高温超导复合线。目前制造最先进的高温超导复合线的方法是，由包裹在银(Ag)护套中的陶瓷超导长丝组成，削弱了银护套，导致高温超导复合强度降低。复合导线的低强度是开发高温超导导线的主要障碍，用于需要坚固导线的应用，如输电电缆、磁铁和电机。增加护套强度，同时保持银的化学兼容性和透氧性的一种方法是消耗臭氧层物质。由于无法使用商用的消耗臭氧层物质-银材料和工艺获得所需的强度，拟议的第一阶段研究将着眼于在高温超导复合加工的背景下使用新的加工技术评价新型消耗臭氧层物质-银材料。从而得到了该材料的工艺-性能-组织关系。此外，通过使用统计设计的实验技术，将得到与高温超导复合丝制造相关的工艺参数(温度、氧活度、时间和应变)的定量表达式。这一评价计划将能够确定与高温超导相结合的最佳消耗臭氧层物质-银材料(成分和工艺)。***

9360646 Riley The strengthening of High-Temperature Superconductor (HTS) composite wires using internally oxidized, dispersion strengthened (ODS) silver is proposed. Current methods manufacture of state-of-the-art HTS composite wires, that consist of ceramic superconductor filaments encased in a silver (Ag) sheath, weaken the Ag sheath, resulting in reduced HTS composite strengths. The low strength of the composite wires are a major obstacle in the development of HTS wires for applications requiring robust conductors such as power transmission cables, magnets, and motors. The one method of increasing the strength of the sheath, while maintaining the chemical compatibility and oxygen permeability of Ag is ODS. Because the required strengths cannot be obtained using commercially available ODS-Ag materials and processes, the proposed Phase I research will be directed towards evaluating novel ODS-Ag materials using novel processing techniques in the context of HTS composite processing. Process-property-microstucture relationships for the ODS-Ag materials will thusly be obtained. Moreover, by using statistically designed experimental techniques, a quantitative expression of the mechanical properties of the novel ODS-Ag materials as a function of the process parameters (temperature, oxygen activity, time and strain) relevant to HTS composite wire fabrication will result. This evaluation scheme will enable the identification of the optimum ODS-Ag material (composition and process) for integration with HTS in composite form. ***