Sintering behaviors, microstructures and dielectric properties of CaO-B2O3-SiO2 glass ceramic for LTCC application with various network modifiers content

Yang, Chengyu; Li, Junkai; Lu, Yang; Shan, Yiting; Xian, Qianqian; Zhou, Hongqing

doi:10.1007/s10854-021-07042-7

Cited by 10 publications

(5 citation statements)

References 36 publications

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“…The process parameters were optimized by selecting the volume fraction of KH550, the pH value of the modified solution, the modification time and the modification temperature. Each process parameter has five experimental groups [32][33][34] In the fly ash cenosphere modification experiments, the lipophilicity was used as a measure, and the parameters of the irrelevant variables, and the modification curves, Table 2, Figure 1.…”

Section: Modification Experiments Resultsmentioning

confidence: 99%

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Performance and application study of silane coupling agent (KH550) modified wood fiber‐fly ash cenosphere/epoxy resin composites

Wang

Zhao

et al. 2023

Materialwissenschaft Werkst

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In this paper, the epoxy resin composite filled with wood fiber and fly ash cenosphere was prepared. In order to improve the bonding properties between wooden fiber/fly ash cenosphere and epoxy resin, the grafting treatment of wooden fiber and fly ash cenosphere surfaces was carried out here using KH550 type silane coupling agent. The effects of different process parameters on the surface modification effect of wooden fiber and fly ash cenosphere were investigated, the mechanical properties and energy absorption characteristics of the materials before and after the filler modification were tested, and the microscopic interfacial structures of the matrix with wooden fiber and fly ash cenosphere were investigated by scanning electron microscopy. Meanwhile, based on LS‐DYNA simulation software, the energy‐absorbing performance of energy‐absorbing boxes prepared from AA6061 aluminum alloy and modified wooden fiber‐fly ash cenosphere/epoxy resin composites were compared in low‐velocity collisions.

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Section: Modification Experiments Resultsmentioning

confidence: 99%

“…The process parameters were optimized by selecting the volume fraction of KH550, the pH value of the modified solution, the modification time and the modification temperature. Each process parameter has five experimental groups [32–34]. The KH550 volume ratio is 5 %, 10 %, 15 %, 20 %, and 25 %.…”

Section: Resultsmentioning

confidence: 99%

Performance and application study of silane coupling agent (KH550) modified wood fiber‐fly ash cenosphere/epoxy resin composites

Wang

Zhao

et al. 2023

Materialwissenschaft Werkst

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“…The analysis reveals that the crystal peaks are concentrated between 839 • C and 727 • C, with an increase in CaF 2 content resulting in a gradual decrease in the starting temperature of glass crystallization (Tx) and the crystallization temperature (Tp), from 810 • C and 839 • C to 705 • C and 727 • C, respectively. This decrease in Tx and Tp is due to the effective reduction in overheating required for crystallization by CaF 2 , which promotes crystallization at low temperatures [12][13][14][15]20,22]. Prior to the Ts, the glass melt exhibits a high η and a large viscous flow resistance, resulting in contraction of the sample with a flat shape.…”

Section: Resultsmentioning

confidence: 99%

“…He et al [12] investigated the influence of ZrO 2 content on crystallization, densification, and dielectric performance of CBS glass-ceramics, and their results showed that ZrO 2 content promoted the precipitation of the wollastonite crystal phase. Yang et al [13] found that additives Na 2 O and K 2 O could significantly improve the sintering characteristics and dielectric properties. In addition, Zhu et al [14] demonstrated that an addition of 3 wt% LiF significantly reduced the sintering temperature of CBS glass-ceramics to 790 • C, as well as improved the dielectric properties and bending strength.…”

Section: Introductionmentioning

confidence: 99%

The Influence of CaF2 Doping on the Sintering Behavior and Microwave Dielectric Properties of CaO-B2O3-SiO2 Glass-Ceramics for LTCC Applications

et al. 2023

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With the rapid development of microelectronic information technology, microelectronic packaging has higher requirements in terms of integration density, signal transmission speed, and passive component integration. Low temperature co-fired ceramics (LTCC) exhibit excellent dielectric properties and low temperature sintering properties, which meets the above-mentioned requirements. This work investigates the effects of CaF2 doping (0–16 mol%) on the glass structure, sintering behavior, crystallization, microstructure, and microwave dielectric properties of the CaO-B2O3-SiO2 (CBS) glass-ceramic system. Glass-ceramics were prepared using the conventional melting and quenching method. The physical and chemical properties of the glass-ceramics were analyzed using various techniques including TMA, SDT, FTIR, XRD, SEM, and a network analyzer. The results indicate that CaF2 doping can effectively reduce the sintering temperature and softening temperature of CBS ceramics. It also substantially improves the densification, dielectric, and mechanical properties. The appropriate amount of CaF2-doped CBS glass-ceramics can be sintered below 800 °C with a low dielectric constant and loss at high frequency (εr < 6, tanδ < 0.02 @ 10~13 GHz). Specifically, 8 mol% CaF2 doped CBS glass-ceramics sintered at 790 °C exhibit excellent microwave dielectric and thermal properties, with εr ~ 5.92 @ 11.4 GHz, tanδ ~ 1.59 × 10−3, CTE ~ 7.76 × 10−6/°C, λ ~ 2.17 W/(m·k), which are attractive for LTCC applications.

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“…Since the 20th century, many scholars have begun to study the relationship between the pore characteristics and the dielectric properties of porous media (e.g., rocks, ceramics, soils, crystalline materials, etc.) (Toumelin E and Torres-Verdín C 2007;Valant M and Suvorov D 2003;Kim MI et al 2009; Yang C et al 2021). As a natural anisotropic and nonhomogeneous porous material, wood has a multilevel pore structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of pore characteristics on the dielectric constant of wood: considering the Moisture content and Frequency change

Qin,

Xu,

Guo

et al. 2024

Preprint

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Electromagnetic waves are gradually used in wood inspection and treatment. Three important parameters need to be considered in the application of this method, including moisture content (MC), porosity, and dielectric constant (ε), which affect the effectiveness of the application of electromagnetic waves, and these parameters can interact with each other. This study’s objective is to elucidate the effect and mechanism of porosity on the ε of wood with different MCs (absolute dry to saturated) in the frequency(f) range of 1 Hz-107 Hz. The pore parameters of four wood species are obtained by mercury piezometer and optical microscope, and the ε of wood with different MCs is obtained by dielectric spectrometer. The results indicate that the effect of porosity on the ε of wood needs to consider both f and MC. Relationship between porosity and ε of absolute dry wood shows opposite patterns in different f bands. When f ≤ 200 Hz, the porosity is positively correlated with ε. When f > 200 Hz, the porosity is negatively correlated with ε. However, the effect of f on the ε with the increase of MC is complicated. When f is low, the correlation among MC, porosity and ε is not significant, and as the f increases, the relationship between MC and ε becomes linear, and the growth rate of ε is large for wood with small porosity. The results of this study provide a reference for use of ε to detect wood pore characteristics and MC.

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Sintering behaviors, microstructures and dielectric properties of CaO-B2O3-SiO2 glass ceramic for LTCC application with various network modifiers content

Cited by 10 publications

References 36 publications

Performance and application study of silane coupling agent (KH550) modified wood fiber‐fly ash cenosphere/epoxy resin composites

Performance and application study of silane coupling agent (KH550) modified wood fiber‐fly ash cenosphere/epoxy resin composites

The Influence of CaF2 Doping on the Sintering Behavior and Microwave Dielectric Properties of CaO-B2O3-SiO2 Glass-Ceramics for LTCC Applications

Effect of pore characteristics on the dielectric constant of wood: considering the Moisture content and Frequency change

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