Ceramic of the Mullite–ZrO2–SiAlON System During Spark Plasma Sintering

Autor: Maris Rundans, Gaida Maruta Sedmale, Andris Cimmers, J. Setina, Ingunda Šperberga
Rok vydání: 2016
Předmět:
Zdroj: Refractories and Industrial Ceramics. 57:146-150
ISSN: 1573-9139
1083-4877
Popis: Results are provided for a study of ceramic of the mullite–ZrO2–SiAlON system formed from oxide mixtures with addition of SiAlON nanopowder during spark plasma sintering (SPS) compared with properties of similar ceramic prepared by traditional sintering. It is shown that ceramic prepared by the SPS-process (compared with traditional sintering) has high indices for density (3.10 – 3.32 g/cm3), ultimate strength in compression (295 – 305 MPa), and also a high elasticity modulus (170 – 180 MPa) after ten thermal shock cycles. This is due to the packing density of mullite formations within sintered specimen microstructure, including ZrO2 inclusions of cubic modification.
Databáze: OpenAIRE