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Phase Composition and Physicomechanical Properties of β-Sialons Prepared Using NaF as a Sintering Aid.
- Source :
- Inorganic Materials; Sep2023, Vol. 59 Issue 9, p970-976, 7p
- Publication Year :
- 2023
-
Abstract
- We have studied the effect of sodium fluoride as a sintering aid for β-sialons on the phase composition and physicomechanical properties of Si<subscript>5</subscript>AlON<subscript>7</subscript> and Si<subscript>4</subscript>Al<subscript>2</subscript>O<subscript>2</subscript>N<subscript>6</subscript>. Two-step high-temperature firing of the β-sialons in the presence of NaF under a nitrogen atmosphere has been shown to cause no significant changes in the phase composition of the materials. The density and microhardness of the materials prepared using 0.5 and 5.0 wt % NaF are lower than those of the materials prepared without sintering aids, but the bending strength is higher by up to 14.3% in the case of Si<subscript>5</subscript>AlON<subscript>7</subscript> prepared using 0.5 wt % NaF and by 4.9% in the case of Si<subscript>4</subscript>Al<subscript>2</subscript>O<subscript>2</subscript>N<subscript>6</subscript> prepared using 5.0 wt % NaF. [ABSTRACT FROM AUTHOR]
- Subjects :
- MICROHARDNESS
SINTERING
PHASE change materials
SODIUM fluoride
Subjects
Details
- Language :
- English
- ISSN :
- 00201685
- Volume :
- 59
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Inorganic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 175895888
- Full Text :
- https://doi.org/10.1134/S0020168523090017