An influence of a Glass Braze Composition on the Properties of Li-Ti Ferrite Joints

Panpan Lin; Tiesong Lin; Peng He; Dusan P. Sekulic; Mengyuan Zhao; Shulei Wang

doi:10.1007/s11664-016-5072-6

An influence of a Glass Braze Composition on the Properties of Li-Ti Ferrite Joints

Panpan Lin, Tiesong Lin, Peng He, Dusan P. Sekulic, Mengyuan Zhao, Shulei Wang

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The influence of the chemical composition of Bi₂O₃-B₂O₃-SiO₂-ZnO glass brazes on (i) the microstructure, (ii) the mechanical and (iii) the dielectric properties of Li-Ti ferrite joints was systematically investigated. The Bi₅(Ti₃Fe)O₁₅ whisker and a white block phase consisting of Bi₁₂SiO₂ and Bi₂₄B₂O₃₉ were observed in the joints of Li-Ti ferrite/Bi25-Ba and Li-Ti ferrite/glass brazes, respectively, containing a higher content of Bi₂O₃. No crystalline phase was detected in the Li-Ti ferrite/Bi25 and Li-Ti ferrite/Bi20 joints. The joint strength reached the maximum of 48 MPa in the Li-Ti ferrite/Bi25-Ba couples. It is assumed that this is mainly due to the strengthening effect of Bi₅(Ti₃Fe)O₁₅ whiskers. The bonding temperature (700°C) had little effect on the dielectric properties of Li-Ti ferrite. Moreover, compared to the Bi25-Ba glass brazes, the Bi25 and Bi20 glass brazes had a less pronounced influence on the dielectric properties of joints. Different glass brazes can be tailored to different requirements depending on specific application and joint property requirements.

Original language	English
Pages (from-to)	2003-2010
Number of pages	8
Journal	Journal of Electronic Materials
Volume	46
Issue number	4
DOIs	https://doi.org/10.1007/s11664-016-5072-6
State	Published - Apr 1 2017

Bibliographical note

Publisher Copyright:
© 2017, The Minerals, Metals & Materials Society.

Funding

The authors gratefully acknowledge the financial support from the “National Natural Science Foundation of China (NSFC, Grant Numbers 51475103 and 51474081)”. DPS acknowledges the support through the Distinguished 1000 Foreign Expert Professor Plan.

Funders	Funder number
National Natural Science Foundation of China (NSFC)	51475103, 51474081

Keywords

BiO-BO-SiO-ZnO glass braze
Li-Ti ferrite
dielectric constant
dielectric loss tangent
joint strength
microstructure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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10.1007/s11664-016-5072-6

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title = "An influence of a Glass Braze Composition on the Properties of Li-Ti Ferrite Joints",

abstract = "The influence of the chemical composition of Bi2O3-B2O3-SiO2-ZnO glass brazes on (i) the microstructure, (ii) the mechanical and (iii) the dielectric properties of Li-Ti ferrite joints was systematically investigated. The Bi5(Ti3Fe)O15 whisker and a white block phase consisting of Bi12SiO2 and Bi24B2O39 were observed in the joints of Li-Ti ferrite/Bi25-Ba and Li-Ti ferrite/glass brazes, respectively, containing a higher content of Bi2O3. No crystalline phase was detected in the Li-Ti ferrite/Bi25 and Li-Ti ferrite/Bi20 joints. The joint strength reached the maximum of 48 MPa in the Li-Ti ferrite/Bi25-Ba couples. It is assumed that this is mainly due to the strengthening effect of Bi5(Ti3Fe)O15 whiskers. The bonding temperature (700°C) had little effect on the dielectric properties of Li-Ti ferrite. Moreover, compared to the Bi25-Ba glass brazes, the Bi25 and Bi20 glass brazes had a less pronounced influence on the dielectric properties of joints. Different glass brazes can be tailored to different requirements depending on specific application and joint property requirements.",

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AU - Lin, Tiesong

AU - He, Peng

AU - Sekulic, Dusan P.

AU - Zhao, Mengyuan

AU - Wang, Shulei

PY - 2017/4/1

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AB - The influence of the chemical composition of Bi2O3-B2O3-SiO2-ZnO glass brazes on (i) the microstructure, (ii) the mechanical and (iii) the dielectric properties of Li-Ti ferrite joints was systematically investigated. The Bi5(Ti3Fe)O15 whisker and a white block phase consisting of Bi12SiO2 and Bi24B2O39 were observed in the joints of Li-Ti ferrite/Bi25-Ba and Li-Ti ferrite/glass brazes, respectively, containing a higher content of Bi2O3. No crystalline phase was detected in the Li-Ti ferrite/Bi25 and Li-Ti ferrite/Bi20 joints. The joint strength reached the maximum of 48 MPa in the Li-Ti ferrite/Bi25-Ba couples. It is assumed that this is mainly due to the strengthening effect of Bi5(Ti3Fe)O15 whiskers. The bonding temperature (700°C) had little effect on the dielectric properties of Li-Ti ferrite. Moreover, compared to the Bi25-Ba glass brazes, the Bi25 and Bi20 glass brazes had a less pronounced influence on the dielectric properties of joints. Different glass brazes can be tailored to different requirements depending on specific application and joint property requirements.

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KW - dielectric loss tangent

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An influence of a Glass Braze Composition on the Properties of Li-Ti Ferrite Joints

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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