Microstructure and mechanical properties of an alumina–glass low temperature co-fired ceramic

Zhang, Yang-Fei; Bai, Shu‐Lin; Miao, Min; Jin, Yufeng

doi:10.1016/j.jeurceramsoc.2008.07.056

Cited by 33 publications

(12 citation statements)

References 20 publications

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“…The influence of the particle size of the Al 2 O 3 filler on the densification and dielectric properties of a glass‐ceramic composite was studied by Seo et al . The microstructural and mechanical properties of glass‐ceramic composites were investigated by Zhang et al . The influence of the amount of crystallizing product in a glass‐ceramic composite on the TCE was reported by Inoue et al .…”

Section: Introductionmentioning

confidence: 99%

“…A detailed review of the reactions of alumina with glass phases of different compositions was reported by Mu¨ller et al 2 The authors studied the dissolution of alumina, the sintering behavior, and the crystallization of model glassceramic systems. The sintering of commercial or model glassceramic composites was studied by Mohanram et al, 3,4 Kemethmu¨ller et al, 5 and Eberstein et al 6 The influence of different ceramic fillers on the sintering behavior of a glassceramic composite was studied by Kumar et al 7 The sintering and crystallization of glasses for LTCC applications were studied by Panda et al 8 The influence of the glass phases in LTCCs on the densification and microstructure were studied by Eberstein et al 9 The effect of Al 2 O 3 filler quantities on the crystallization of borosilicate glass was studied by Imanaka et al 10 The influence of the particle size of the Al 2 O 3 filler on the densification and dielectric properties of a glass-ceramic composite was studied by Seo et al 11 The microstructural and mechanical properties of glass-ceramic composites were investigated by Zhang et al 12 The influence of the amount of crystallizing product in a glass-ceramic composite on the TCE was reported by Inoue et al 13 The chemical, structural, and mechanical properties of commercial LTCC materials fired using the parameters prescribed by the producer were studied by Jones et al 14 The main physical properties of commercially available LTCCs processed using the parameters specified by the producer are available in datasheets and other open literature. Typically, those materials have a TCE between 3 9 10 À6 and 10 9 10 À6 K À1 , a dielectric constant between 5 and 8 and a flexural strength between 100 and 300 MPa.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Processing Conditions on the Properties ofLTCCMaterial

Makarovič¹,

Meden²,

Hrovat³

et al. 2011

J. Am. Ceram. Soc.

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In this work the effect of firing temperature and firing time on the phase composition, microstructure, biaxial flexural strength, and temperature coefficient of expansion (TCE) of low‐temperature cofired ceramic (LTCC) material is presented. At temperatures around 700°C the Al2O3 starts to dissolve in a low viscosity glass phase and this takes place up to 800°C, when 10 wt% of Al2O3 ceramic filler is dissolved in the glass phase forming the alumina‐enriched area. This area is suitable for the crystallization of anorthite, which nucleates on the Al2O3 particles. The crystallization starts at 875°C and the mass fraction of anorthite increases with increasing temperature until it reaches a plateau value of around 22 wt% at higher temperatures or longer firing times. The biaxial flexural strength of the LTCC increases with increasing firing temperature from 135 MPa (at 800°C) to around 300 MPa (at 900°C). The major effect on the biaxial flexural strength of LTCC is that of porosity. The effect of the amount of anorthite on the LTCC biaxial flexural strength is minor. The TCE of the LTCC decreases from 5.6 × 10−6 to 5.0 × 10−6 K−1 with increasing firing temperatures or times and it is correlated with the anorthite mass fraction, which crystallizes at the expense of a decreasing amount of glass phase in the LTCC.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Processing Conditions on the Properties ofLTCCMaterial

Makarovič¹,

Meden²,

Hrovat³

et al. 2011

J. Am. Ceram. Soc.

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“…Low Temperature Co-fired Ceramic (LTCC) has become an ideal substrate material [1] for 3D high density assembly thanks to its perfect features: chemical resistance, hermeticity, low dielectric constant, matching of thermal expansion coefficient with the silicon and integration of passive components. Meanwhile micro-channels are easy to realize in the LTCC substrate, using liquid cooling, which can better solve the cooling problem brought by the highly integrated system.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of Microchannel Deformation during LTCC Warm Water Isostatic Pressing Process

Lang¹,

Wu²

2015

Proceedings of the First International Conference on Information Sciences, Machinery, Materials and Energy

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Abstract. During the process of warm water isostatic pressing process, the internal micro-channels fabricated in Low Temperature Co-fired Ceramic (LTCC) substrate are prone to collapse. In this paper, a three-dimensional model of LTCC microwave component is established by the finite element software ABAQUS, and the micro-channel deformation is studied by the simulation analysis of warm water isostatic pressing process. Results show that pressure is the main factor that leads to the deformation of micro-channel, and temperature is followed. At the same time, the microchannel with large width-height ratio-aspect ratio has large deformation. Choose smaller pressure 18 MPa and high temperature 80 ℃, microchannel deformation can be controlled below 15%.

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“…Many integrated LTCC devices have to be operated under harsh environmental conditions and the mechanical strength is a critical issue regarding the reliability of the devices. [11] In addition, the low-loss characteristics of the LTCC dielectric and conductor allow low-loss transmission lines and high quality factor of passive devices for millimeter-wave frequency circuits.…”

Section: Introductionmentioning

confidence: 99%

“…The real measured specimens size and calculate strength[11] of 3 point bending test are shown in table 1.…”

mentioning

confidence: 99%

Measurement of dielectric and mechanical properties of LTCC for MMW-band application

Won-Young¹,

Kim

Park

et al. 2009

2009 Asia Pacific Microwave Conference

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In this study, the dielectric and mechanical properties of an alumina-glass based low temperature co-fired ceramic (LTCC) have been investigated. The dielectric properties at millimeter-wave (MMW) band (especially 60GHz) of commercially available LTCC substrate were measured using cavity resonance method and the mechanical properties were measured by three point bending method. RNE XB substrates manufactured by RN2 technologies have appropriate dielectric properties at MMW band. CBCPW (Conductor backed coplanar waveguide) lines for MMW were designed and also measured. The transmission losses of CBCPW lines on LTCC substrate with tan less than 0.0025 were 0.1dB/mm. As the tan increased to 0.0032, the losses of CBCPW lines at 60GHz showed to 0.15dB/mm wherein this loss value was sufficiently low in the application of LTCC as a packaging technology for MMW band. As expected, the transmission losses of lines critically depended on the dielectric characteristics of the LTCC substrate.

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Microstructure and mechanical properties of an alumina–glass low temperature co-fired ceramic

Cited by 33 publications

References 20 publications

The Effect of Processing Conditions on the Properties ofLTCCMaterial

The Effect of Processing Conditions on the Properties ofLTCCMaterial

Simulation Analysis of Microchannel Deformation during LTCC Warm Water Isostatic Pressing Process

Measurement of dielectric and mechanical properties of LTCC for MMW-band application

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