Progress of High Strength and High Thermal Conductivity Si<sub>3</sub>N<sub>4</sub> Ceramics for Power Module Packaging

Shi, Fang; Zengchao, YANG; Li, Jiangtao

doi:10.15541/jim20230037

Cited by 4 publications

(1 citation statement)

References 115 publications

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“…Serving as a pivotal ceramic structural material, Si 3 N 4 finds extensive application in semiconductor, metallurgy, aerospace, machinery, photovoltaic, medical, and fine grinding industries because of its excellent chemical stability, heat and wear resistance, good insulation performance, high strength, and good thermal shock resistance. [1][2][3][4][5][6][7][8] Si 3 N 4 powder is one of the crucial raw materials of Si 3 N 4 ceramics. It primarily exists in two forms, α-Si 3 N 4 and β-Si 3 N 4 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of high‐purity α‐Si₃N₄ powder via multifunctional synergistic catalysis and pretreatment method

Yuan,

Zhao,

Sun

et al. 2024

Int J Applied Ceramic Tech

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At present, the Si3N4 powder prepared is not pure enough. Therefore, this work introduces a novel method of preparing high‐purity α‐Si3N4 powder. Si3N4 powder with high α phase content was prepared via a unique two‐stage temperature‐rise (TSTR) process, using KCl and metal Co as dual catalysts through low‐temperature pretreatment for silicon powder and subsequent high‐temperature nitriding reaction. Molten KCl insulates silicon particles in three contact modes during low‐temperature pretreatment, promoting complete and uniform nitriding and absorbing the heat released during the reaction. In addition, Co forms a Co–Si liquid phase, causing the reaction to transition into a gas–liquid–solid reaction with lower potential energy, thereby reducing the reaction temperature. Through the synergistic effect of the two catalysts and optimized unique TSTR process, Si3N4 powder can be obtained at 1250°C, boasting a remarkably high α phase content of 99.1%, distinguished by its layered, needle‐like, and spherical structures. The detailed experiments first provide a comprehensive explanation of the growth mechanism of α‐Si3N4. This innovative method for preparing Si3N4 powder offers a new approach to the facile production of high‐purity phase ceramic powder.

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Section: Introductionmentioning

confidence: 99%

Preparation of high‐purity α‐Si₃N₄ powder via multifunctional synergistic catalysis and pretreatment method

Yuan,

Zhao,

Sun

et al. 2024

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

Microstructure, joining mechanism, mechanical properties and optimization of inactive solder (Sn9Zn) in low temperature ultrasonic soldering of AlN ceramics and 2024Al

Fan,

Chen

2024

Ceramics International

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Research Progress of High Thermal Conductivity Silicon Nitride Ceramics Prepared by Non-oxide Sintering Additives

WANG,

et al. 2024

Journal of Inorganic Materials

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Progress of High Strength and High Thermal Conductivity Si₃N₄ Ceramics for Power Module Packaging

Cited by 4 publications

References 115 publications

Preparation of high‐purity α‐Si₃N₄ powder via multifunctional synergistic catalysis and pretreatment method

Preparation of high‐purity α‐Si₃N₄ powder via multifunctional synergistic catalysis and pretreatment method

Microstructure, joining mechanism, mechanical properties and optimization of inactive solder (Sn9Zn) in low temperature ultrasonic soldering of AlN ceramics and 2024Al

Research Progress of High Thermal Conductivity Silicon Nitride Ceramics Prepared by Non-oxide Sintering Additives

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Progress of High Strength and High Thermal Conductivity Si3N4 Ceramics for Power Module Packaging

Cited by 4 publications

References 115 publications

Preparation of high‐purity α‐Si3N4 powder via multifunctional synergistic catalysis and pretreatment method

Preparation of high‐purity α‐Si3N4 powder via multifunctional synergistic catalysis and pretreatment method

Microstructure, joining mechanism, mechanical properties and optimization of inactive solder (Sn9Zn) in low temperature ultrasonic soldering of AlN ceramics and 2024Al

Research Progress of High Thermal Conductivity Silicon Nitride Ceramics Prepared by Non-oxide Sintering Additives

Contact Info

Product

Resources

About

Progress of High Strength and High Thermal Conductivity Si₃N₄ Ceramics for Power Module Packaging

Preparation of high‐purity α‐Si₃N₄ powder via multifunctional synergistic catalysis and pretreatment method

Preparation of high‐purity α‐Si₃N₄ powder via multifunctional synergistic catalysis and pretreatment method