Strength analysis of small-sized thin ceramic discs obtained by spark-plasma sintering

5th International Scientific Workshop on "Advanced Technologies of Materials Field-Assisted Consolidation"

Nefedova, E.V.^1 ; Goltsev, V.I.^1 ; Grigoryev, E.G.^1 ; Zholnin, A.G.^1 ; Smirnov, K.L.^2

National Research Nuclear University, MEPhI, Kashirskoe shosse, 31, Moscow

115409, Russia^1

Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Akademika Osipyana str. 8, Chernogolovka, Moscow region

142432, Russia^2

关键词: Al2O3 ceramics;    Ceramic discs;    Flexture;    Optimal process;    Sintering temperatures;    Starting powders;    Strength analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/218/1/012010/pdf
DOI  :  10.1088/1757-899X/218/1/012010

来源: IOP

【 摘 要 】

The study develops an original method of mechanical test of thin small-size disks for determining resistance of brittle materials to rupture. Based on this method a test of ultimate flexture strenght was conducted on Al2O3ceramics and composites of β-Si5AlON7-BN, system obtained by the method of spark-plasma sintering. The obtained test results allowed determining the optimal process parameters for sintering this ceramic materials in terms of their strength level: composition and dispersion of the starting powder mixtures, the maximum sintering temperature, etc.