Corundum ceramic materials modified with silica nanopowders: structure and mechanical properties

2nd International Symposium on Fundamental Aspects of Rare-earth Elements Mining and Separation and Modern Materials Engineering

材料科学;物理学

Kostytsyn, M.A.^1 ; Muratov, D.S.^1 ; Lysov, D.V.^1 ; Chuprunov, K.O.^1 ; Yudin, A.G.^1 ; Leybo, D.V.^1

National University of Science and Technology MISiS, 4 Leninsky Prospekt, Moscow

119049, Russia^1

关键词: Compression strength;    Corundum ceramics;    Effective porosity;    Filtering elements;    Filtering materials;    Modifying agents;    Precursor materials;    Rare earth metals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/112/1/012010/pdf
DOI  :  10.1088/1757-899X/112/1/012010

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Filtering elements are often used in the metallurgy of rare earth metals. Corundum ceramic is one of the most suitable materials for this purpose. The process of formation and the properties of nanomodified ceramic materials, which are proposed as filtering materials with tunable effective porosity, are described. A silica nanopowder is used as a porosity-increasing agent. Vortex layer apparatus is used for mixing of precursor materials. The obtained results show that nanomodification with the vortex layer apparatus using 0.04 wt. % silica nanopowder as a modifying agent leads to an increase in the compression strength of corundum ceramic by the factor of 1.5.