Materials Chemistry Applications in Support of the Nuclear Industry

核反应堆中使用的材料的热性能，无论是作为燃料的成分还是作为反应堆或安全壳系统的组件，在较高的温度或水环境中并不总是具有良好的特性。随着核电站将反应堆推向更高的功率输出，从而推动设计极限，燃料的温度也越来越高。当材料超出其设计功能时，这将对安全分析产生影响。这项研究计划将： 1)调查核燃料燃烧过程中形成的金属系统，以确定其热性质； 2)发展实验方法，以提高用于模拟模型的热力学数据的准确性； 3)开发用于先进核燃料循环的新材料； 4)建造了研究高温(100℃以上)水体系和测量金属-水体系热力学性质的实验设备； 5)发展对用于制氢技术的材料特性的基本了解； 6)培养具有与核和能源部门有关的热化学知识的高素质人员。 该研究计划将涉及以下四个项目： 一)检查核燃料中的金属系统； 二)研制一种在高温下测量氧分压的传感器； 三)测量与铜-氯循环产生氢气有关的材料的热化学性质。 IV)高温Pourbai x图的实验测定

The thermal properties of materials used in nuclear reactors, either as constituents of fuel or as components in the reactor or containment systems, are not always well characterized at higher temperatures or in aqueous environments. As nuclear power plants push the design envelopes by taking the reactors to higher power outputs, the fuel is running hotter. This has implications for safety analysis when the materials are taken outside their designed function. This research program will: 1) Investigate metallic systems that form during nuclear fuel burn-up to determine their thermal properties; 2) Develop the experimental methodologies to improve the accuracy of thermodynamic data for use in simulation models; 3) Develop novel materials for use in advanced nuclear fuel cycles; 4) Construct test equipment to study high temperature (above 100 °C) aqueous systems and measure thermodynamic properties of metal-water systems; 5) Develop fundamental understanding of materials properties for use in hydrogen generation technologies; 6) Develop Highly Qualified Personnel with a knowledge of thermochemistry as it relates to the nuclear and energy sectors. The research program will involve the following four projects: i) Examine metallic systems in nuclear fuel; ii) Develop a sensor for measuring the oxygen pressure at high temperatures; iii) Measure thermochemical properties of materials in connection with hydrogen generation from the copper-chlorine cycle. iv) Experimental Determination of High Temperature Pourbaix Diagrams