‘Refractory Composites’ via vibration assisted casting, pressure slip casting and cold isostatic pressing on the base of conventional sintering without pressure

在传统无压烧结的基础上通过振动辅助铸造、压力注浆铸造和冷等静压制成“耐火复合材料”

• 批准号: 433715064
• 负责人: Professor Dr.-Ing. Christos G. Aneziris
• 金额: --
• 依托单位: Professur für Keramik, Feuerfest und metallokeramische Verbundwerkstoffe
• 依托单位国家: 德国
• 项目类别: Research Units
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/433715064?language=en
• 关键词: Refractory; Composites; via; vibration; assisted

Subproject 2 investigates the manufacturing of functional, coarse grained, refractory composites bases on the pre-synthesized grains of subproject 1. Samples will be generated via vibration assisted casting, pressure slip casting and cold isostatic pressing with the aid of a wide grain size distribution between 1 and 5000 µm. The rheology and the flowing of the castables as well as of the pressing masses will be a function of grain size, grain size distribution, grain shape, specific surface of the grains as well their ability to get deformed at room temperature. Based on the adjustment of specific grain size distributions the impact of fine and coarse grains on the mechanical, thermomechanical, chemical and electrical properties will be investigated in cooperation also with the other subprojects of the scientific group.Core/Shell-Sandwich components based on alumina on the outer side and metal/ceramic composite as a core material will be studied. With the aid of the coarse grains a shrinkage less than 1% during the sintering process will be aimed, so that a micro crack free interface between the core and the cell will be generated. For core/shell-components a) silica- and alkali-free hybrid heating shields will be investigated for energy applications as well as b) carbon free hybrid stoppers for metallurgical application in the steel industry will be explored. Flame sprayed coatings will improve the oxidation resistance of the metal/ceramic composite core material.

子项目 2 基于子项目 1 的预合成颗粒，研究功能性粗粒耐火复合材料的制造。样品将通过振动辅助铸造、压力注浆铸造和冷等静压成型，并借助宽粒度分布在1 和 5000 µm 浇注料以及压制物质的流变性和流动性将是晶粒尺寸、晶粒尺寸分布、晶粒形状、比表面积的函数。晶粒及其在室温下变形的能力将与其他子项目合作，研究细晶粒和粗晶粒对机械、热机械、化学和电性能的影响。该科学小组将研究以氧化铝为外侧、以金属/陶瓷复合材料为芯材的芯/壳夹层组件，借助粗晶粒，在成型过程中收缩率小于1%。烧结过程的目标是，以便在核心和电池之间产生无微裂纹的界面。对于核心/壳组件，a) 将研究无硅和碱的混合加热罩的能源应用以及b。 ）将探索用于钢铁行业冶金应用的无碳混合塞，火焰喷涂涂层将提高金属/陶瓷复合芯材的抗氧化性。