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標題: 以氧化硼為中間層之氧化鋁陶瓷暫態液相擴散接合
Investigation on the Transient Liquid Phase Bonding of Al2O3 Ceramic by B2O3 Interlayer
作者: 黃健峰
Huang, Chien-Feng
關鍵字: Alumina;氧化鋁;Transient Liquid Phase Bonding;boron oxide;暫態液相接合;氧化硼
出版社: 材料工程學研究所

Alumina bulks coated with a 3m thick layer of boron oxide were bonded at various temperatures, times and loading in air. The properties of the bonding interface were investigated microstructurally by scanning electron microscopy (SEM), chemically by means of electron probe microanalysis, and mechanically by four point bending test. After, that the fracture surfaces were observed microstructures by SEM, and phases are determined by low angle X-ray diffraction.
It was found that the thickness of bonding interlayer decreases with increasing bonding temperature and time. The best compactability of bonding interlayer cross-section microstructure was reached at the bonding condition of 800℃, 6 hours and 1500Pa. The average bonding strength reaches the maximum value of 71MPa in this study at the bonding condition of 800℃, 15 hours and 1500Pa. Ceramic compounds form at the interface via bonding at temperature above 700℃. The phase analysis showed that the formation of compounds begin with the formation of 3Al2O3-B2O3 metastable phase. The compound transforms into 2Al2O3-B2O3 and 9Al2O3-2B2O3 stable phases with increasing temperature. Then they become 9Al2O3-2B2O3 stable phases. It was also found that needle-like structure of ceramic compounds form at the interlayer.
Appears in Collections:材料科學與工程學系

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