CaO/Yb2O3-doped SiAlONs synthesized with crystalline and amorphous Si3N4 using spark plasma sintering

Hasan Sohail Syed; Abbas Saeed Hakeem; Abdul Qadeer; Muhammad Ali Ehsan

doi:10.1557/s43579-022-00172-x

CaO/Yb₂O₃-doped SiAlONs synthesized with crystalline and amorphous Si₃N₄ using spark plasma sintering

Hasan Sohail Syed, Abbas Saeed Hakeem^*, Abdul Qadeer, Muhammad Ali Ehsan

^*Corresponding author for this work

Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The present work is aimed at exploring new combinations of precursors in the synthesis of SiAlONs for improved performance. The effects of amorphous and crystalline Si₃N₄ together with CaO and Yb₂O₃ (nano-sized) metal oxides were considered to study the resulting microstructure and thermomechanical properties. They were synthesized using ultrasonic probe sonication and spark plasma sintering by adding nano-sized precursors, including SiO₂, AlN, and Al₂O₃. The formation of SiAlONs was based on compositions according to general formula M_m/vSi_12−(m+n)Al_m+nO_nN_16−n for m = 1.1 and n = 0.6. The type of Si₃N₄ and selected metal oxides were found crucial for tailoring the properties of SiAlONs. Graphical abstract: [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	295-301
Number of pages	7
Journal	MRS Communications
Volume	12
Issue number	3
DOIs	https://doi.org/10.1557/s43579-022-00172-x
State	Published - Jun 2022

Bibliographical note

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to The Materials Research Society.

Keywords

Amorphous
Ceramic
Crystalline

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1557/s43579-022-00172-x

Cite this

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title = "CaO/Yb2O3-doped SiAlONs synthesized with crystalline and amorphous Si3N4 using spark plasma sintering",

abstract = "The present work is aimed at exploring new combinations of precursors in the synthesis of SiAlONs for improved performance. The effects of amorphous and crystalline Si3N4 together with CaO and Yb2O3 (nano-sized) metal oxides were considered to study the resulting microstructure and thermomechanical properties. They were synthesized using ultrasonic probe sonication and spark plasma sintering by adding nano-sized precursors, including SiO2, AlN, and Al2O3. The formation of SiAlONs was based on compositions according to general formula Mm/vSi12−(m+n)Alm+nOnN16−n for m = 1.1 and n = 0.6. The type of Si3N4 and selected metal oxides were found crucial for tailoring the properties of SiAlONs. Graphical abstract: [Figure not available: see fulltext.]",

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AU - Syed, Hasan Sohail

AU - Hakeem, Abbas Saeed

AU - Qadeer, Abdul

AU - Ehsan, Muhammad Ali

PY - 2022/6

Y1 - 2022/6

N2 - The present work is aimed at exploring new combinations of precursors in the synthesis of SiAlONs for improved performance. The effects of amorphous and crystalline Si3N4 together with CaO and Yb2O3 (nano-sized) metal oxides were considered to study the resulting microstructure and thermomechanical properties. They were synthesized using ultrasonic probe sonication and spark plasma sintering by adding nano-sized precursors, including SiO2, AlN, and Al2O3. The formation of SiAlONs was based on compositions according to general formula Mm/vSi12−(m+n)Alm+nOnN16−n for m = 1.1 and n = 0.6. The type of Si3N4 and selected metal oxides were found crucial for tailoring the properties of SiAlONs. Graphical abstract: [Figure not available: see fulltext.]

AB - The present work is aimed at exploring new combinations of precursors in the synthesis of SiAlONs for improved performance. The effects of amorphous and crystalline Si3N4 together with CaO and Yb2O3 (nano-sized) metal oxides were considered to study the resulting microstructure and thermomechanical properties. They were synthesized using ultrasonic probe sonication and spark plasma sintering by adding nano-sized precursors, including SiO2, AlN, and Al2O3. The formation of SiAlONs was based on compositions according to general formula Mm/vSi12−(m+n)Alm+nOnN16−n for m = 1.1 and n = 0.6. The type of Si3N4 and selected metal oxides were found crucial for tailoring the properties of SiAlONs. Graphical abstract: [Figure not available: see fulltext.]

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