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Mechanical Properties and the Microstructure of AlO/Al/AlO Joints with the Surface Modification of Alumina by a Thin Layer of Ti + Nb.

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Title: Mechanical Properties and the Microstructure of AlO/Al/AlO Joints with the Surface Modification of Alumina by a Thin Layer of Ti + Nb.
Authors: Ksiazek, Marzanna1 marzanna.ksiazek@iod.krakow.pl, Tchorz, Adam1, Boron, Lukasz1
Source: Journal of Materials Engineering & Performance. May2014, Vol. 23 Issue 5, p1635-1640. 6p.
Subjects: Aluminum oxide, Joints (Engineering), Mechanical properties of metals, Metal microstructure, Metal bonding, Bond strengths
Abstract: AlO/Al/AlO joints were formed by liquid-state bonding of alumina substrates covered with a thin Ti + Nb coating of 900 nm thickness with the use of an Al interlayer of 30 μm at 973 K under a vacuum of 0.2 mPa for 5 min. The bond strength of the joints was examined by a four-point bending test at 295, 373, and 473 K. Optical, scanning, and transmission electron microscopies were applied for detailed characterization of the interface structure and failure characteristics of fractured joint surfaces. The analysis of the results has shown that (i) bonding occurred due to the formation of a reactive interface on the metal side of the joint in the presence of AlNb(Ti) precipitates and (ii) modification of AlO by a thin layer of Ti + Nb increases the hardness at the interface and makes it possible to achieve reliable joints working at elevated temperatures. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 95753861
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  Data: Mechanical Properties and the Microstructure of AlO/Al/AlO Joints with the Surface Modification of Alumina by a Thin Layer of Ti + Nb.
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  Data: <searchLink fieldCode="DE" term="%22Aluminum+oxide%22">Aluminum oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Joints+%28Engineering%29%22">Joints (Engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+properties+of+metals%22">Mechanical properties of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+microstructure%22">Metal microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+bonding%22">Metal bonding</searchLink><br /><searchLink fieldCode="DE" term="%22Bond+strengths%22">Bond strengths</searchLink>
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  Data: AlO/Al/AlO joints were formed by liquid-state bonding of alumina substrates covered with a thin Ti + Nb coating of 900 nm thickness with the use of an Al interlayer of 30 μm at 973 K under a vacuum of 0.2 mPa for 5 min. The bond strength of the joints was examined by a four-point bending test at 295, 373, and 473 K. Optical, scanning, and transmission electron microscopies were applied for detailed characterization of the interface structure and failure characteristics of fractured joint surfaces. The analysis of the results has shown that (i) bonding occurred due to the formation of a reactive interface on the metal side of the joint in the presence of AlNb(Ti) precipitates and (ii) modification of AlO by a thin layer of Ti + Nb increases the hardness at the interface and makes it possible to achieve reliable joints working at elevated temperatures. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11665-014-0980-1
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      – SubjectFull: Mechanical properties of metals
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      – SubjectFull: Metal microstructure
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              Text: May2014
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