The effect of microstructure evolution on mechanical properties in novel alumina-montmorillonite composites
Tomasz Cygan , Jarosław Woźniak , Mateusz Petrus , Bogusława Adamczyk-Cieślak , Marek Kostecki , Andrzej Olszyna
AbstractFabrication of alumina matrix composites reinforced with montmorillonite (MMT) is introduced in this work. Specimens were prepared with the use of powder metallurgy and consolidated using the Spark Plasma Sintering (SPS) method. Investigations were then carried out on the influence of MMT addition on microstructure, mechanical properties and tribological performance of the alumina matrix composites. Scanning Electron Microscopy (SEM) revealed significant changes in microstructure where elongated, abnormally overgrown grains of alumina can be observed in areas contacted with montmorillonite. This unusual bimodal microstructure greatly influenced the measured mechanical properties and friction study. Tribological examinations exhibited outstanding results, where samples with montmorillonite addition demonstrate significant improvement in the wear in comparison to pure unmodified alumina sinters.
|Journal series||International Journal of Refractory Metals & Hard Materials, ISSN 0263-4368|
|Publication size in sheets||0.5|
|Keywords in Polish||Tlenek aluminium, Montmorylonit, Kompozyty na osnowie ceramicznej (CMC), Mikrostruktura, Właściwości mechaniczne, Spiekanie proszków metodą SPS|
|Keywords in English||Alumina, Montmorillonite, Ceramic-matrix composites (CMCs), Microstructure, Mechanical properties, Spark Plasma Sintering (SPS)|
|Score||= 140.0, 09-06-2020, ArticleFromJournal|
|Publication indicators||= 2; = 0; = 1.0; : 2018 = 2.794 (2) - 2018=2.907 (5)|
|Citation count*||1 (2020-08-10)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.