Effects of Bi2O3–ZnO–B2O3–SiO2 glass addition on the sintering and microwave dielectric properties of ZnZrNb2O8 ceramics for LTCC applications

Qi, Shishun; Cheng, Huarong; Yang, Kuiyong; Song, Beibei; Sun, Shoujin; Zhang, Yong

doi:10.1007/s10854-019-00944-7

Cited by 8 publications

(8 citation statements)

References 30 publications

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“…When doped with 3 wt% BaCu(B 2 O 5 ), the sintering temperature of ZnZrNb 2 O 8 drops to 950°C, and it possesses outstanding microwave performance: ε r = 28.40, Q × f = 56,720 GHz, and τ f = −53.00 ppm/°C. In addition, Qi et al 14 . thoroughly studied the influence of Bi 2 O 3 –B 2 O 3 –SiO 2 –ZnO glass on the microwave performance of ZnZrNb 2 O 8 ceramics.…”

Section: Introductionmentioning

confidence: 99%

Effect of composite methods on the phase transition and microwave performances of ZnZrNb_1.99(Sn_0.5W_0.5)_0.01O₈–TiO₂ system

Huang

Qiao

2023

J Am Ceram Soc.

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Tri‐layer ZnZrNb1.99(Sn0.5W0.5)0.01O8–TiO2–ZnZrNb1.99(Sn0.5W0.5)0.01O8 and random distribution ZnZrNb1.99(Sn0.5W0.5)0.01O8@TiO2 ceramics with different mass fractions of TiO2 were initially synthesized. The effects of the laminated cofiring and the random distribution processes on the crystal structure and microwave dielectric properties of the composite ceramics were investigated. The advantages of the unique tri‐layer architecture were fully demonstrated. It not only allows the effects of the chemical reactions between ZnZrNb1.99(Sn0.5W0.5)0.01O8 and TiO2 can be effectively limited to a narrow region (∼20 μm in width) within the ZnZrNb1.99(Sn0.5W0.5)0.01O8/TiO2 interfaces, and acts as the “glues” to bond each layer well. The layers are well connected and the possibility of deterioration of Q× f values during the modification process can be greatly reduced. When compared with ZnZrNb1.99(Sn0.5W0.5)0.01O8@TiO2 ceramics with random distribution type, the tri‐layer design can produce a roughly 60% improvement in Q× f value with no noticeable loss in dielectric constant while maintaining temperature stability. After sintering at 1340°C for 6 h, ZnZrNb1.99(Sn0.5W0.5)0.01O8–TiO2–ZnZrNb1.99(Sn0.5W0.5)0.01O8 tri‐layer ceramics exhibited excellent dielectric properties (εr = 30.29, Q× f = 56,880 GHz, and τf = −5.73 ppm/°C) with 0.05 wt% TiO2, and the cooperative optimization of microwave dielectric properties was achieved. The current research provides a strategy for synthesizing microwave dielectric devices with high dielectric properties for applications in 5G network communications.

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Section: Introductionmentioning

confidence: 99%

Effect of composite methods on the phase transition and microwave performances of ZnZrNb_1.99(Sn_0.5W_0.5)_0.01O₈–TiO₂ system

Huang

Qiao

2023

J Am Ceram Soc.

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“…13 Low-melting point sintering aids, such as Bi 2 O 3 -ZnO-B 2 O 3 -SiO 2 glass and BaCu(B 2 O 5 ), are used to satisfy the demands for LTCC applications. 14,15 Although these sintering aids successfully reduce the sintering temperature with high additive amount, uncontrollable reaction between sintering aids and ZnZrNb 2 O 8 ceramics matrices occur, which deteriorated microwave dielectric performance and microstructure, as well as increased difficulty in casting tapes. Therefore, highly effective sintering aid should be explored to fabricate single-phase ZnZrNb 2 O 8 ceramics with high performance at low temperature, which have not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

“…investigated structural dependence through pentavalent ions substitution (i.e., Sb 5+ and Ta 5+ ) at the Nb‐site 13 . Low‐melting point sintering aids, such as Bi 2 O 3 –ZnO–B 2 O 3 –SiO 2 glass and BaCu(B 2 O 5 ), are used to satisfy the demands for LTCC applications 14,15 . Although these sintering aids successfully reduce the sintering temperature with high additive amount, uncontrollable reaction between sintering aids and ZnZrNb 2 O 8 ceramics matrices occur, which deteriorated microwave dielectric performance and microstructure, as well as increased difficulty in casting tapes.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure, Raman spectra, and modified dielectric properties of pure‐phase ZnZrNb₂O₈ ceramics at low temperature

et al. 2022

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Low-temperature co-fired ceramics technology (LTCC) exhibits enormous superiorities in packaging, integration, and interconnection. However, the complex compositions of low-melting point sintering aids may react with ceramic matrix, which increases the difficulties of phase control and tape casting. In this work, the Li 2 CO 3 -B 2 O 3 -Bi 2 O 3 -SiO 2 (LBBS) sintering aid was adopted to sinter ZnZrNb 2 O 8 ceramics with single phase at low temperatures. The LBBS glass could be used to fabricate pure-phase ZnZrNb 2 O 8 ceramics at a low sintering temperature, promote the grain growth, and increase the densification of ZnZrNb 2 O 8 ceramics. Furthermore, the unit cell volume, NbO 6 octahedral distortion, Raman shift, and FWHM changed along with LBBS addition, thereby affecting the microwave dielectric properties. Remarkably, ZnZrNb 2 O 8 ceramics doped with 0.75 wt.% LBBS at 950 • C were chemically compatible with the silver electrode and exhibited excellent microwave dielectric characteristics: ε r = 27.1, Q × f = 54 500 GHz, and τ f = −48.7 ppm/ • C, providing candidates for LTCC applications.

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“…Substituting Bi for Pb is becoming a trend. Bismuth-based glass solder has the characteristics of low softening temperature, adjustable expansion coefficient and easy formation of crystallization [ 33 , 34 ]. Its working temperature is generally between 420 °C and 550 °C, suitable for the welding and sealing of aluminum-based materials.…”

Section: Introductionmentioning

confidence: 99%

Joining of Hypereutectic Al-50Si Alloys Using Lead-Free Brazing Filler Glass in Air

Wang

Gao

et al. 2020

Materials

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Hypereutectic Al-Si alloys are attractive materials in the fields of electronic packaging and aerospace. A Bi2O3-ZnO-B2O3 system lead-free brazing filler glass was employed to braze hypereutectic Al-50Si alloys in air. The hypereutectic Al-50Si alloys were pre-oxidized and the low-temperature glass powder was flake-shaped in the brazing process. The effects of brazing temperature and time on joints microstructure evolution, resulting mechanical strength, and air tightness were systematically investigated. The results indicated that the maximum shear strength of the joint was 34.49 MPa and leakage rate was 1.0 × 10−10 Pa m3/s at a temperature of 495 °C for 30 min. Crystalline phases, including Bi24B2O39 and Bi2O3, were generated in the glass joint. The formation of a diffusion transition layer with a thickness of 3 μm, including elements of Al, Si, Zn, Bi, Na, and B, was the key to form an effective joint. The elements of Al, Si, and Bi had a short diffusion distance while the elements of Zn, Na, and B diffused in a long way under brazing condition.

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Effects of Bi2O3–ZnO–B2O3–SiO2 glass addition on the sintering and microwave dielectric properties of ZnZrNb2O8 ceramics for LTCC applications

Cited by 8 publications

References 30 publications

Effect of composite methods on the phase transition and microwave performances of ZnZrNb_1.99(Sn_0.5W_0.5)_0.01O₈–TiO₂ system

Effect of composite methods on the phase transition and microwave performances of ZnZrNb_1.99(Sn_0.5W_0.5)_0.01O₈–TiO₂ system

Crystal structure, Raman spectra, and modified dielectric properties of pure‐phase ZnZrNb₂O₈ ceramics at low temperature

Joining of Hypereutectic Al-50Si Alloys Using Lead-Free Brazing Filler Glass in Air

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Effects of Bi2O3–ZnO–B2O3–SiO2 glass addition on the sintering and microwave dielectric properties of ZnZrNb2O8 ceramics for LTCC applications

Cited by 8 publications

References 30 publications

Effect of composite methods on the phase transition and microwave performances of ZnZrNb1.99(Sn0.5W0.5)0.01O8–TiO2 system

Effect of composite methods on the phase transition and microwave performances of ZnZrNb1.99(Sn0.5W0.5)0.01O8–TiO2 system

Crystal structure, Raman spectra, and modified dielectric properties of pure‐phase ZnZrNb2O8 ceramics at low temperature

Joining of Hypereutectic Al-50Si Alloys Using Lead-Free Brazing Filler Glass in Air

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Effect of composite methods on the phase transition and microwave performances of ZnZrNb_1.99(Sn_0.5W_0.5)_0.01O₈–TiO₂ system

Effect of composite methods on the phase transition and microwave performances of ZnZrNb_1.99(Sn_0.5W_0.5)_0.01O₈–TiO₂ system

Crystal structure, Raman spectra, and modified dielectric properties of pure‐phase ZnZrNb₂O₈ ceramics at low temperature