Inter-American Materials Collaboration (CIAM): Stability, Durability and Crystallization of Iron Phosphate Glasses

非技术描述：密苏里州大学罗拉分校（UMR）、巴西圣卡洛斯联邦大学（UFSCar）和阿根廷圣卡洛斯德巴里洛什国家原子能委员会（CNEA）的巴里洛切原子能中心的材料研究小组正在进行一项多年国际研究计划。 该计划将侧重于铁磷酸盐基玻璃和熔体的特性。 这些玻璃是感兴趣的高水平核废料固定，生物可吸收的医疗植入物，和其他几个用途。 合作研究将调查这些玻璃的抗结晶性、抗腐蚀性和对辐照的反应。 该计划还将涉及美国和巴西学生的交流，他们将在两个机构进行研究，并参与教育机会。技术装备：在UFSCar，这些玻璃的结晶动力学将被测量，使用一系列新的热分析技术在UMR和UFSCar开发。 在CNEA，这些玻璃的耐腐蚀性将在各种流体中进行测量，并对玻璃进行辐照。 将在UFSCar（结晶动力学）、UMR（结构）和CNEA（腐蚀、结构）评估辐照对玻璃性能的影响。 在UMR，对这些体系相平衡的研究将确定液相线温度和平衡晶相。 人员交流将使学生和教师能够学习每个机构开发的研究技术。这项工作由国际科学与工程办公室和材料研究部联合支持。

NON-TECHNICAL DESCRIPTION: A multi-year international research program is under-way between materials research groups from the University of Missouri - Rolla (UMR), the Universidade Federal do Sao Carlos of Sao Carlos, Brazil (UFSCar), and the Centro Atomico Bariloche of the Comision Nacional Energia Atomico of San Carlos de Bariloche, Argentina (CNEA). The program will focus on the characteristics of iron phos-phate-based glasses and melts. These glasses are of interest for high-level nuclear waste fixation, bioresorbable medical implants, and several other uses. Cooperative research will investigate the resistance to crystallization, corrosion resistance, and response to irradiation of these glasses. The program will also involve the interchange of American and Brazilian students, who will conduct research at both institutions as well as partici-pating in educational opportunities.TECHNICAL DETAILS: At UFSCar, the crystallization kinetics of these glasses will be measured, using a series of new thermal-analysis techniques developed at UMR and UFSCar. At CNEA the corrosion resistance of these glasses will be measured in a variety of fluids, and the glasses will be irradiated. The impact of irradiation on glass properties will be assessed at UFSCar (crystallization kinetics), UMR (structure), and CNEA (corrosion, structure). At UMR, an investigation of phase equilibria in these systems will de-termine liquidus temperatures and equilibrium crystalline phases. The exchange of personnel will allow students and faculty alike to learn research techniques developed at each institution.This work is jointed supported by the Office of International Science and Engineering and the Division of Materials Research.