Improving bending strength of LTCC materials with low dielectric loss by structural design

Wang, Huaizhi; Leng, Yue; Chen, Yaoyi; Peng, Haiyi; Ren, Haishen; Xie, Tianyi; Lin, Huixing; Meng, Fancheng

doi:10.1007/s10832-022-00296-5

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…The Kovar glass is a kind of borosilicate glass that demonstrates good thermal stability, and dielectrical properties, as well as a low dielectric constant. [20][21][22][23][24][25] In the experiment, the Kovar glass is introduced as the second phase of silicon nitride composites. This can cause a reduction in the dielectric constant of the composites.…”

Section: Introductionmentioning

confidence: 99%

Dielectric and mechanical properties of porous Si₃N₄–Kovar composites prepared by low‐temperature oxidation sintering

Lin,

Xia,

Cao

et al. 2024

J Am Ceram Soc.

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The aim of this study is to investigate the impact of the Kovar glass content on the mechanical and electrical properties of Si3N4–Kovar composites sintering at air atmosphere. To achieve this, Si3N4–Kovar composites were prepared using molding technology with the Kovar glass powder ranging from 20 to 70 wt%. The phase composition, morphology, bulk density, apparent porosity, flexural strength at room temperature, dielectric constant, and dielectric loss of the composites were all examined in relation to changing the Kovar glass content. During the sintering process, the α‐quartz on the surface of Si3N4 particles acted as the crystal nucleus, inducing the crystallization of the glass at the wetting position that the Kovar glass and the surface of the Si3N4 particles. A small amount of the β‐quartz phase was crystallized at 750–850°C, followed by a large amount of the β‐quartz phase crystallizing above 900°C. Additionally, some β‐quartz phase transformed into the metastable β‐cristobalite phase that could exist below 1470°C. During the cooling process, the β‐cristobalite phase transformed into a low‐temperature α‐cristobalite phase, while the β‐quartz phase transformed into a low‐temperature α‐quartz phase. The results indicate that the Si3N4–Kovar glass composite with 60 wt% the Kovar glass content sintered at 900°C exhibits higher density (1.88 g/cm3), lower porosity (25.4%), higher flexural strength (55.34 MPa), lower dielectric constant (3.46), and lower dielectric loss (4.26 × 10−3).

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Section: Introductionmentioning

confidence: 99%

Dielectric and mechanical properties of porous Si₃N₄–Kovar composites prepared by low‐temperature oxidation sintering

Lin,

Xia,

Cao

et al. 2024

J Am Ceram Soc.

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Synthesis, microstructure and characterization of Ultra-low permittivity and dielectric loss ZnO-B2O3-SiO2 glass/SiO2 composites for LTCC application

Xin,

Zhang,

Sun

et al. 2024

J Electroceram

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Improving bending strength of LTCC materials with low dielectric loss by structural design

Cited by 2 publications

References 16 publications

Dielectric and mechanical properties of porous Si₃N₄–Kovar composites prepared by low‐temperature oxidation sintering

Dielectric and mechanical properties of porous Si₃N₄–Kovar composites prepared by low‐temperature oxidation sintering

Synthesis, microstructure and characterization of Ultra-low permittivity and dielectric loss ZnO-B2O3-SiO2 glass/SiO2 composites for LTCC application

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Improving bending strength of LTCC materials with low dielectric loss by structural design

Cited by 2 publications

References 16 publications

Dielectric and mechanical properties of porous Si3N4–Kovar composites prepared by low‐temperature oxidation sintering

Dielectric and mechanical properties of porous Si3N4–Kovar composites prepared by low‐temperature oxidation sintering

Synthesis, microstructure and characterization of Ultra-low permittivity and dielectric loss ZnO-B2O3-SiO2 glass/SiO2 composites for LTCC application

Contact Info

Product

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Dielectric and mechanical properties of porous Si₃N₄–Kovar composites prepared by low‐temperature oxidation sintering

Dielectric and mechanical properties of porous Si₃N₄–Kovar composites prepared by low‐temperature oxidation sintering