Corrosion of Pt-electrodes in basalt glass

铂是一种耐腐蚀性很强的贵金属，用于生产特殊用途的玻璃，以及作为电极和喷嘴拉玻璃纤维。尽管其具有优异的耐腐蚀性，但高腐蚀性玻璃（如玄武岩玻璃）的熔化导致不期望的材料损坏，这意味着对工业的巨大经济损失。在本项目的背景下，它的目的是执行系统的腐蚀实验与铂电极作为各种参数的函数，如频率，温度和玻璃成分。在金属和合金的椅子上安装了一个腐蚀设施，在过去几年中，该设施一直被用于玻璃熔化实验。为了了解腐蚀机制和反应及其随时间的可能变化，将通过扫描和透射电子显微镜表征微观结构变化和纳米级的腐蚀产物。此外，腐蚀速率将通过X射线荧光分析反应玄武岩玻璃中的铂含量来确定。这些定量数据将使我们能够确定铂材料腐蚀最小化的条件。

Platinum is a highly corrosion-resistant noble metal, which is used for the production of special-purpose glass and for pulling glass fibers as electrodes and nozzles. Despite its excellent corrosion resistance, the melting of highly corrosive glasses such as basaltic glass results in undesired material damage, which implies a huge economic damage for the industry. In the context of this project it is intended to perform systematic corrosion experiments with Pt electrodes as function of various parameters such as frequency, temperature, and glass composition. A corrosion facility is installed at the Chair for Metals and Alloys, which has been routinely used during the last years in glass melting experiments. In order to understand the corrosion mechanisms and reactions and their possible changes over time, microstructural changes and corrosion products down to the nanometer scale will be characterized by scanning and transmission electron microscopy. Furthermore, corrosion rates will be determined via X-ray fluorescence analysis of platinum contents in reacted basalt glass. These quantitative data will enable us to define the conditions under which the corrosion of platinum materials will be minimized.