Microstructure and characterization of interfacial phases of sapphire/sapphire joint bonded using Bi2O3–B2O3–ZnO glass

Wei Guo; Tiesong Lin; Peng He; Dusan P. Sekulic; Zhan Sun; Panpan Lin; Xiao Shan; Guangjie Feng; Bingzhi Wu; Maochang Wang

doi:10.1016/j.jeurceramsoc.2016.10.010

Microstructure and characterization of interfacial phases of sapphire/sapphire joint bonded using Bi₂O₃–B₂O₃–ZnO glass

Wei Guo, Tiesong Lin, Peng He, Dusan P. Sekulic, Zhan Sun, Panpan Lin, Xiao Shan, Guangjie Feng, Bingzhi Wu, Maochang Wang

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

47 Scopus citations

Abstract

Bismuth borate zinc glass, 50Bi₂O₃–30B₂O₃–20ZnO (mol.%), was used as a braze intended to join sapphire. Thermal properties of the glass were all experimentally determined. The wettability of the glass on sapphire was investigated. The contact angle not greater than 11.3° was obtained in air at temperatures of ≥700 °C. Subsequently, sapphire was successfully joined to themselves at 700 °C for 20 min. The microstructure of the joint was studied and the interfacial phases were characterized. The results showed that the ZnAl₂O₄ phase was formed as a result of the reaction between the sapphire substrate and ZnO from the glass. The mechanical integrity of the joints was investigated. The joints with an average room shear strength of 70 MPa were achieved. The fracture analysis indicated that the fracture occurred within the glass interlayer rather than at the sapphire/glass interface, hence indicating a good bonding of the glass with sapphire.

Original language	English
Pages (from-to)	1073-1081
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	37
Issue number	3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2016.10.010
State	Published - Mar 1 2017

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

Funding

This research is supported by “ National Natural Science Foundation of China (NSFC, Grant number 51475103 , 51474081 )” and “The funds for Distinguished Young Scientists of Heilongjiang Province (Grant number JC20151 1)”. Dusan P. Sekulic (DPS) acknowledges the support through “the Distinguished 1000 Plan Foreign Professor appointment” at the Harbin Institute of Technology, PR China.

Funders	Funder number
National Natural Science Foundation of China (NSFC)	51475103, 51474081
China National Funds for Distinguished Young Scientists	JC20151 1

Keywords

Bismuth borate zinc glass
Microstructure
Sapphire joining
Wettability
Zinc aluminate (ZnAlO)

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1016/j.jeurceramsoc.2016.10.010

Cite this

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title = "Microstructure and characterization of interfacial phases of sapphire/sapphire joint bonded using Bi2O3–B2O3–ZnO glass",

abstract = "Bismuth borate zinc glass, 50Bi2O3–30B2O3–20ZnO (mol.%), was used as a braze intended to join sapphire. Thermal properties of the glass were all experimentally determined. The wettability of the glass on sapphire was investigated. The contact angle not greater than 11.3° was obtained in air at temperatures of ≥700 °C. Subsequently, sapphire was successfully joined to themselves at 700 °C for 20 min. The microstructure of the joint was studied and the interfacial phases were characterized. The results showed that the ZnAl2O4 phase was formed as a result of the reaction between the sapphire substrate and ZnO from the glass. The mechanical integrity of the joints was investigated. The joints with an average room shear strength of 70 MPa were achieved. The fracture analysis indicated that the fracture occurred within the glass interlayer rather than at the sapphire/glass interface, hence indicating a good bonding of the glass with sapphire.",

keywords = "Bismuth borate zinc glass, Microstructure, Sapphire joining, Wettability, Zinc aluminate (ZnAlO)",

author = "Wei Guo and Tiesong Lin and Peng He and Sekulic, {Dusan P.} and Zhan Sun and Panpan Lin and Xiao Shan and Guangjie Feng and Bingzhi Wu and Maochang Wang",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

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AU - Guo, Wei

AU - Lin, Tiesong

AU - He, Peng

AU - Sekulic, Dusan P.

AU - Sun, Zhan

AU - Lin, Panpan

AU - Shan, Xiao

AU - Feng, Guangjie

AU - Wu, Bingzhi

AU - Wang, Maochang

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Bismuth borate zinc glass, 50Bi2O3–30B2O3–20ZnO (mol.%), was used as a braze intended to join sapphire. Thermal properties of the glass were all experimentally determined. The wettability of the glass on sapphire was investigated. The contact angle not greater than 11.3° was obtained in air at temperatures of ≥700 °C. Subsequently, sapphire was successfully joined to themselves at 700 °C for 20 min. The microstructure of the joint was studied and the interfacial phases were characterized. The results showed that the ZnAl2O4 phase was formed as a result of the reaction between the sapphire substrate and ZnO from the glass. The mechanical integrity of the joints was investigated. The joints with an average room shear strength of 70 MPa were achieved. The fracture analysis indicated that the fracture occurred within the glass interlayer rather than at the sapphire/glass interface, hence indicating a good bonding of the glass with sapphire.

AB - Bismuth borate zinc glass, 50Bi2O3–30B2O3–20ZnO (mol.%), was used as a braze intended to join sapphire. Thermal properties of the glass were all experimentally determined. The wettability of the glass on sapphire was investigated. The contact angle not greater than 11.3° was obtained in air at temperatures of ≥700 °C. Subsequently, sapphire was successfully joined to themselves at 700 °C for 20 min. The microstructure of the joint was studied and the interfacial phases were characterized. The results showed that the ZnAl2O4 phase was formed as a result of the reaction between the sapphire substrate and ZnO from the glass. The mechanical integrity of the joints was investigated. The joints with an average room shear strength of 70 MPa were achieved. The fracture analysis indicated that the fracture occurred within the glass interlayer rather than at the sapphire/glass interface, hence indicating a good bonding of the glass with sapphire.

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