Wetting behaviour of SiC ceramics: Part I. E2O3/Al2O3 additive system
作者： F.V Motta , R.M Balestra , S Ribeiro , S.P Taguchi
DOI: 10.1016/J.MATLET.2004.05.005
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摘要: Abstract Wettability is the most important phenomenon in SiC liquid phase sintering. This paper discusses ceramic–ceramic wetting of E 2 O 3 /Al additives on SiC, where a mixture rare earth oxide. A sphere-shaped sample additive was put plate and set placed graphite resistance furnace heated to sphere melting point at rate 10 °C/min. The behaviour observed by means an imaging system using CCD camera, while contact angle measured analyzed QWin Leica software. tests were performed argon or nitrogen atmospheres. wettability curves displayed fast decline good spreading. system, which approached eutectic composition when compared with diagram Y better Measurements could not be made test conducted atmosphere because bubbles that formed during test, damaging interfacial zone between SiC. results these indicate best sintering for this argon.
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