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標題: Transient liquid phase bonding of alumina to alumina via boron oxide interlayer
作者: Chang, L.S.
Huang, C.F.
關鍵字: joining;Al2O3;B2O3;transient liquid phase bonding;ceramics
Project: Ceramics International
期刊/報告no:: Ceramics International, Volume 30, Issue 8, Page(s) 2121-2127.
Alumina bulks coated with 3 mum boron oxide layer were bonded at various temperatures and times in air. The joining strength, interfacial compounds and morphologies of cross-sections and fracture surfaces were investigated by means of four-point bending, X-ray diffraction and scanning electron microscopy. The maximum bending strength is 71 MPa for alumina bonded at 800degreesC for 15 h. The layered metastable phase of 3Al(2)O(3)-B3O3 forms at the beginning of joining at temperature above 700 degreesC. This interlayer transforms into a whisker structure consisting of 2Al(2)O(3)-B3O3 and 9Al(2)O(3)-2B(3)O(3) With increasing temperature and time. Models for the growth and morphology of these interfacial compounds are proposed. (C) 2004 Elsevier Ltd and Techna S.r.l. All rights reserved.
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2003.11.018
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