A novel type of composite LTCC material for high flexural strength application

Qin, Tianying; Zhong, Chaowei; Tang, Bin; Zhan, Shuren

doi:10.1016/j.jeurceramsoc.2020.09.046

Cited by 37 publications

(5 citation statements)

References 35 publications

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“…Furthermore, LTCC substrate materials must match the thermal expansion coefficients of the substrate, conductor, and semiconductor 23 . The LTCC substrate material is a glass–ceramic composite material whose expansion coefficient is caused by the combined action of all phases 24 …”

Section: Resultsmentioning

confidence: 99%

“…23 The LTCC substrate material is a glass-ceramic composite material whose expansion coefficient is caused by the combined action of all phases. 24 Figure 9 shows the linear size variations of various LTCCs with temperature, wherein the size changes of all systems are approximately linear with temperature. The factors that influence the CTE are the composition and volume of the crystalline phase, the composition and volume of the glass phase, and the microstructure of the sample.…”

Section: Dta and Xrd Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Microwave dielectric characterization and densification mechanism analysis of CaO‐B₂O₃‐SiO₂ glass–ceramic/Al₂O₃ composites for LTCC applications

Xiong,

Xue,

et al. 2023

J Am Ceram Soc.

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In this study, nine component points were designed based on a CaO‐B2O3‐SiO2 (CBS) glass system with a high boron content, and CBS glass/Al2O3 composites were developed for low‐temperature co‐fired ceramic (LTCC) applications. Furthermore, the densification process, phase compositions, microstructures, and properties were investigated. The results indicated that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. The real‐time shrinkage rate of LTCC during sintering was simulated using the thermal shrinkage curve and combined with DTA and XRD. It was proven that the formation of the CaAl2(BO3)O phase contributed to the reduction in glass viscosity and promoted the formation of a dense structure. The LTCC composite with 30 vol% glass sintered at 850°C exhibited a coefficient of thermal expansion of 4.55‐6.35 ppm/◦C, εr of 3.5∼5.0 and minimum tan δ of 0.0018 at 15 GHz. Therefore, these properties make the CBS‐LTCC more suitable for high‐frequency applications.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 99%

Section: Dta and Xrd Analysesmentioning

confidence: 99%

Microwave dielectric characterization and densification mechanism analysis of CaO‐B₂O₃‐SiO₂ glass–ceramic/Al₂O₃ composites for LTCC applications

Xiong,

Xue,

et al. 2023

J Am Ceram Soc.

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“…Low-temperature cofired ceramics (LTCC) technology has the characteristics of low sintering temperature, miniaturization, lightweight, excellent thermal performance, and multilayer printed circuit boards. [1][2][3][4][5] It can provide high/low dielectric constant, low dielectric loss for a single and multilayer packaging system, [6,7] and provide multifunction characteristics through integration and interconnections. Currently, LTCC technology is considered as one of the optimal methods to achieve multilayer ceramic packaging.…”

Section: Introductionmentioning

confidence: 99%

Thermal Sintering Matchability between Low‐Temperature Cofired Ceramic Substrate and Silver Pastes and the Effect of CuO on Silver Diffusion Inhibition

Xiao,

Zhang,

et al. 2024

Adv Eng Mater

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Low‐temperature co‐fired ceramic(LTCC) materials are a promising material for heat dissipation substrates due to their excellent thermal conductivity and thermal expansion coefficient similar to that of silicon. However, the difficulties in surface metallization techniques limit its application. This work uses Bi‐B‐Si‐Zn‐Al glass/ceramic composite as the substrate and Bi‐B‐Si‐Zn‐Al glass powder as the inorganic binder for silver pastes. The silver thick film with a glass content of 3 wt% is sintered at 800 °C for 30 min, and the samples have excellent electrical conductivity (surface square resistance of 0.29 mΩ/□) and mechanical properties (interface bonding force of 17.56 MPa). In addition, the introduction of CuO into the glass phase can inhibit the silver diffusion phenomenon during the sintering process and improve the conductive performance of the material. The results are beneficial for the preparation and application stability of LTCC devices.This article is protected by copyright. All rights reserved.

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“…Some of the main typical ceramic fillers include: Al 2 O 3 [13,14], AlN [15], Mg 2 SiO 4 [16], β-spodumene [17] and so on. Among them, Al 2 O 3 has a large Young's modulus, which can improve the flexural strength of LTCC materials as a ceramic matrix [18].…”

Section: Introductionmentioning

confidence: 99%

INFLUENCE OF THE CaO CONTENT IN GLASS ON THE SINTERABILITY AND PROPERTIES OF A GLASS/Al₂O₃ COMPOSITE FOR LTCC APPLICATIONS

Fan¹

2022

Ceramics - Silikaty

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In this paper, the influence of the CaO content in glass on the sintering behaviour, structure, and properties of CaO-B 2 O 3 --Al 2 O 3 -SiO 2 glass/Al 2 O 3 composites for low-temperature co-fired ceramic materials was studied. The results show that an increase in the CaO content in the glass reduces the polymerisation degree of the glass network, thereby reducing the glass viscosity and promoting the densification of the liquid phase sintering, increasing the crystallisation tendency of the material, reducing the crystallisation peak temperature and promoting the precipitation of anorthite in the material. The sintering activation energy of the glass/Al 2 O 3 first decreases and then increases, and reached a minimum in C4. The anorthite can reduce the bulk density and coefficient of the thermal expansion of the materials, and an appropriate amount of anorthite can improve the flexural strength of the material by more than 190 MPa. When the CaO content in the glass increases, the required sintering temperature for the material to achieve the maximum flexural strength is lower.

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A novel type of composite LTCC material for high flexural strength application

Cited by 37 publications

References 35 publications

Microwave dielectric characterization and densification mechanism analysis of CaO‐B₂O₃‐SiO₂ glass–ceramic/Al₂O₃ composites for LTCC applications

Microwave dielectric characterization and densification mechanism analysis of CaO‐B₂O₃‐SiO₂ glass–ceramic/Al₂O₃ composites for LTCC applications

Thermal Sintering Matchability between Low‐Temperature Cofired Ceramic Substrate and Silver Pastes and the Effect of CuO on Silver Diffusion Inhibition

INFLUENCE OF THE CaO CONTENT IN GLASS ON THE SINTERABILITY AND PROPERTIES OF A GLASS/Al₂O₃ COMPOSITE FOR LTCC APPLICATIONS

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A novel type of composite LTCC material for high flexural strength application

Cited by 37 publications

References 35 publications

Microwave dielectric characterization and densification mechanism analysis of CaO‐B2O3‐SiO2 glass–ceramic/Al2O3 composites for LTCC applications

Microwave dielectric characterization and densification mechanism analysis of CaO‐B2O3‐SiO2 glass–ceramic/Al2O3 composites for LTCC applications

Thermal Sintering Matchability between Low‐Temperature Cofired Ceramic Substrate and Silver Pastes and the Effect of CuO on Silver Diffusion Inhibition

INFLUENCE OF THE CaO CONTENT IN GLASS ON THE SINTERABILITY AND PROPERTIES OF A GLASS/Al₂O₃ COMPOSITE FOR LTCC APPLICATIONS

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Microwave dielectric characterization and densification mechanism analysis of CaO‐B₂O₃‐SiO₂ glass–ceramic/Al₂O₃ composites for LTCC applications

Microwave dielectric characterization and densification mechanism analysis of CaO‐B₂O₃‐SiO₂ glass–ceramic/Al₂O₃ composites for LTCC applications