Wetting of HIP AlN-TiB2 ceramic composites by liquid metals and alloys
A non--oxide ceramic composite family was developed via hot isostatic pressing (HIP) without sintering aids. Fully dense (rhorel > 99%) aluminum nitride--based samples, with titanium diboride as secondary phase, were designed to be electrical discharge machining (EDM) compatible.Wetting experimen...
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Published in | Journal of the European Ceramic Society Vol. 25; no. 10; pp. 1797 - 1803 |
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Main Authors | , , , |
Format | Conference Proceeding Journal Article |
Language | English |
Published |
Oxford
Elsevier
2005
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Subjects | |
Online Access | Get full text |
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Summary: | A non--oxide ceramic composite family was developed via hot isostatic pressing (HIP) without sintering aids. Fully dense (rhorel > 99%) aluminum nitride--based samples, with titanium diboride as secondary phase, were designed to be electrical discharge machining (EDM) compatible.Wetting experiments via the sessile drop method, in vacuum atmosphere, have been performed on three different grades of an AlN--TiB2 ceramic composite. Contact angle and work of adhesion evolutions with time and temperature were investigated.In the case of non--reactive wetting, both copper and silver showed a non--wetting behavior, as well as Cu /Ag alloys. A wetting behavior was, instead, observed for Cu/Ag/Ti brazing alloys.Reactive wetting was observed in the case of nickel. Corrosion was due to Ni diffusion into the ceramic and dissolution of aluminum--based phases in the metal melt. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0955-2219 1873-619X |
DOI: | 10.1016/j.jeurceramsoc.2004.12.012 |