Synthesis of MgSiN2 under 0.1 MPa of nitrogen pressure via combustion

Nakashima, Y.; Ozeki, Yuki; Zhou, You; Hyuga, Hideki; Hashimoto, Shinobu

doi:10.1016/j.ceramint.2021.08.012

Cited by 8 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison, MgSiN 2 is low-cost and can be prepared in large quantities. [32][33][34] More importantly, as a sintering additive, it can substantially improve the thermal conductivity of Si 3 N 4 ceramics compared with MgO. 23,35 Consequently, Gd 2 O 3 -MgSiN 2 substitutes for Gd 2 O 3 -MgO as sintering additives are expected to prepare Si 3 N 4 ceramics with high thermal conductivity and superior mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…improved the thermal conductivity of Si 3 N 4 ceramics by using GdH 2 ‐MgO instead of Gd 2 O 3 ‐MgO via a two‐step sintering process, but GdH 2 is unstable and easy to be oxidized to Gd 2 O 3 , and the two‐step sintering process is complicated. In comparison, MgSiN 2 is low‐cost and can be prepared in large quantities 32–34 . More importantly, as a sintering additive, it can substantially improve the thermal conductivity of Si 3 N 4 ceramics compared with MgO 23,35 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Gd₂O₃ and MgSiN₂ sintering additives on the thermal conductivity and mechanical properties of Si₃N₄ ceramics

Yang

et al. 2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Si 3 N 4 ceramics were prepared by gas pressure sintering at 1900 • C for 12 h under a nitrogen pressure of 1 MPa using Gd 2 O 3 and MgSiN 2 as sintering additives.The effects of the Gd 2 O 3 /MgSiN 2 ratio on the densification, microstructure, mechanical properties, and thermal conductivity of Si 3 N 4 ceramics were systematically investigated. It was found that a low Gd 2 O 3 /MgSiN 2 ratio facilitated the thermal diffusivity of Si 3 N 4 ceramics while a high Gd 2 O 3 /MgSiN 2 ratio benefited the densification and mechanical properties. When the Gd 2 O 3 /MgSiN 2 ratio was 1:1, Si 3 N 4 ceramics obtained an obvious exaggerated bimodal microstructure and the optimal properties. The thermal conductivity, flexural strength, and fracture toughness were 124 W⋅m −1 ⋅k −1 , 648 MPa, and 9.12 MPa⋅m 1/2 , respectively. Comparing with the results in the literature, it was shown that Gd 2 O 3 -MgSiN 2 was an effective additives system for obtaining Si 3 N 4 ceramics with high thermal conductivity and superior mechanical properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Gd₂O₃ and MgSiN₂ sintering additives on the thermal conductivity and mechanical properties of Si₃N₄ ceramics

Yang

et al. 2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

Developing High‐Performance Ceramics from Multicomponent Grain Boundary Entropy Design

Han,

Ren,

Zhang

et al. 2024

Small

View full text Add to dashboard Cite

Grain boundary (GB) glassy phase often results in poor ceramic performances. Here, a Multicomponent Grain Boundary Entropy (MGBE) descriptor extracted from high‐throughput first‐principle calculations is proposed to capture the nature of high‐entropy GB phases in ceramics. In a Si3N4 ceramic model system, MGBE is found to have a direct correlation with GB phase crystallinity, element segregation, and formation of pores. The predicted highest MGBE sintering additive combination (MgO‐Y2O3‐Er2O3‐Yb2O3) leads to high‐performance ceramics of homogenous microstructure and pure GB (YErYb)2Si3O3N4 phase without observable glassy film. Conversely, low MGBE additives result in a substantial amount of GB glassy phase, element segregation, and pore clusters. The MGBE descriptor can make a rapid screening of multicomponent sintering additives, offering a novel approach for rational designing of ceramics with targeted microstructure and performances.

show abstract

Effects of Diamond on the Mechanical Properties and Thermal Conductivity of Si3N4 Composites Fabricated Using Spark Plasma Sintering

Gao,

Liu,

Wang

et al. 2024

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

View full text Add to dashboard Cite

Synthesis of MgSiN2 under 0.1 MPa of nitrogen pressure via combustion

Cited by 8 publications

References 25 publications

Effects of Gd₂O₃ and MgSiN₂ sintering additives on the thermal conductivity and mechanical properties of Si₃N₄ ceramics

Effects of Gd₂O₃ and MgSiN₂ sintering additives on the thermal conductivity and mechanical properties of Si₃N₄ ceramics

Developing High‐Performance Ceramics from Multicomponent Grain Boundary Entropy Design

Effects of Diamond on the Mechanical Properties and Thermal Conductivity of Si3N4 Composites Fabricated Using Spark Plasma Sintering

Contact Info

Product

Resources

About

Synthesis of MgSiN2 under 0.1 MPa of nitrogen pressure via combustion

Cited by 8 publications

References 25 publications

Effects of Gd2O3 and MgSiN2 sintering additives on the thermal conductivity and mechanical properties of Si3N4 ceramics

Effects of Gd2O3 and MgSiN2 sintering additives on the thermal conductivity and mechanical properties of Si3N4 ceramics

Developing High‐Performance Ceramics from Multicomponent Grain Boundary Entropy Design

Effects of Diamond on the Mechanical Properties and Thermal Conductivity of Si3N4 Composites Fabricated Using Spark Plasma Sintering

Contact Info

Product

Resources

About

Effects of Gd₂O₃ and MgSiN₂ sintering additives on the thermal conductivity and mechanical properties of Si₃N₄ ceramics

Effects of Gd₂O₃ and MgSiN₂ sintering additives on the thermal conductivity and mechanical properties of Si₃N₄ ceramics