One-second flash joining of zirconia ceramic by an electric field at low temperatures

Junbo Xia; Ke Ren; Yiguang Wang

doi:10.1016/j.scriptamat.2019.02.004

One-second flash joining of zirconia ceramic by an electric field at low temperatures

Junbo Xia, Ke Ren, Yiguang Wang^*

^*Corresponding author for this work

Institute of Advanced Structure Technology

Northwestern Polytechnical University Xian

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

55 Citations (Scopus)

Abstract

The zirconia ceramic was flash joined in 1 s by applying an electric field. The joining was performed at temperatures as low as 600 °C, with a joint three-point bend strength of ca. 418 MPa and a smaller grain size than that of the parent material. The joining strength was further enhanced with the increase in bonding temperature, reaching ca. 595 MPa at 900 °C. Ultrafast superplastic deformation of the ceramic under the applied electric field and the subsequent accelerated mass transport are proposed as the underlying mechanism for flash joining.

Original language	English
Pages (from-to)	34-38
Number of pages	5
Journal	Scripta Materialia
Volume	165
DOIs	https://doi.org/10.1016/j.scriptamat.2019.02.004
Publication status	Published - May 2019

Keywords

Field assist
Flash joining
Superplastic deformation
Threshold current density
Zirconia

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10.1016/j.scriptamat.2019.02.004

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title = "One-second flash joining of zirconia ceramic by an electric field at low temperatures",

abstract = "The zirconia ceramic was flash joined in 1 s by applying an electric field. The joining was performed at temperatures as low as 600 °C, with a joint three-point bend strength of ca. 418 MPa and a smaller grain size than that of the parent material. The joining strength was further enhanced with the increase in bonding temperature, reaching ca. 595 MPa at 900 °C. Ultrafast superplastic deformation of the ceramic under the applied electric field and the subsequent accelerated mass transport are proposed as the underlying mechanism for flash joining.",

keywords = "Field assist, Flash joining, Superplastic deformation, Threshold current density, Zirconia",

author = "Junbo Xia and Ke Ren and Yiguang Wang",

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AU - Ren, Ke

AU - Wang, Yiguang

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AB - The zirconia ceramic was flash joined in 1 s by applying an electric field. The joining was performed at temperatures as low as 600 °C, with a joint three-point bend strength of ca. 418 MPa and a smaller grain size than that of the parent material. The joining strength was further enhanced with the increase in bonding temperature, reaching ca. 595 MPa at 900 °C. Ultrafast superplastic deformation of the ceramic under the applied electric field and the subsequent accelerated mass transport are proposed as the underlying mechanism for flash joining.

KW - Field assist

KW - Flash joining

KW - Superplastic deformation

KW - Threshold current density

KW - Zirconia

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JO - Scripta Materialia

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ER -

One-second flash joining of zirconia ceramic by an electric field at low temperatures

Abstract

Keywords

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