Vickers hardness of .BETA.-SiAlON prepared by a combination of combustion synthesis and spark plasma sintering

Yi, Xuemei; Watanabe, Kotaro; Akiyama, Tomohiro

doi:10.2109/jcersj2.118.250

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2012

2025

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Cited by 9 publications

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“…However, as demonstrated by Liu et al [24], the elongated β-SiAlON grains enhance the fracture toughness. A maximum hardness of 19.4 GPa was achieved with the Ca0.3N12 sample with an α-phase content of 55%, which is higher than has been achieved with pure-phase β-SiAlON or α-SiAlON prepared by a combination of combustion synthesis and SPS [25,26].…”

Section: Resultsmentioning

confidence: 72%

Spark plasma sintering of α/β-SiAlON synthesized by salt-assisted combustion

Niu

Harada³

et al. 2016

Journal of Alloys and Compounds

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This paper describes the spark plasma sintering (SPS) of Y-and Ca-α/β-SiAlON powders synthesized by salt-assisted combustion at temperatures of 1600 °C with different holding times. X-ray diffraction reveals that with increasing holding time, the α to β transformation ratio of Y-α-SiAlON becomes greater than that of Ca-α-SiAlON.Nevertheless, all samples effectively reach their theoretical density after sintering. The Vickers hardness measured with an applied load of 19.614 (2.0 kg) decreases with a decreasing amount of α-SiAlON, with a maximum value of 19.4 GPa being achieved in Ca-α/β-SiAlON with an α-SiAlON content of 55%.

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Section: Resultsmentioning

confidence: 72%