The effect of microstructural features on the mechanical properties of LZSA glass-ceramic matrix composites

Cerâmica

F. M. Bertan¹  A. P. Novaes De Oliveira²  O. R. K. Montedo¹  D. Hotza²  C. R. Rambo² 

[1] ,Universidade do Extremo Sul Catarinense Unidade Acadêmica de Ciências, Engenharias e Tecnologia Criciúma SC ,Brazil

关键词: glasses;    ceramic-matrix composites;    mechanical properties;    extrusion;    vidros;    compósitos de matriz cerâmica;    propriedades mecânicas;    extrusão;   

DOI  :  10.1590/S0366-69132013000300002

来源: SciELO

【 摘 要 】

This work reports on the characterization of ZrSiO4 particulate-reinforced Li2O-ZrO2-SiO2-Al2O3 (LZSA) glass-ceramic matrix composites. The typical physical/mechanical and chemical properties of the glass batches and the composites were measured. A composition with 60 wt.% ZrSiO4 was preliminarily selected because it demonstrated the highest values of bending strength (190 MPa) and deep abrasion resistance (51 mm³). To this same composition was given a 7 wt.% bentonite addition in order to obtain plasticity behavior suitable for extrusion. The sintered samples (1150 ºC for 10 min) presented a thermal linear shrinkage of 14% and bending strength values of 220 MPa.

【 授权许可】

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