Papers by Keyword: Interface Reactions

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Authors: Eiji Kurimoto, Hiroshi Harima, Tadao Toda, Minoru Sawada, Shinichi Nakashima, Motohiro Iwami
Authors: Shinichi Kikkawa, M. Fujiki, S. Enomoto, Ken-ichi Hirota, O. Yamaguchi
Authors: J. Bär, H.J. Gudladt, L. Fördös, Janos Lendvai
Authors: Y. Takahashi, Hitoshi Ishii
Authors: P.K. Johnson, Fazal-Ur Rehman, S. Fox, H.M. Flower, D.R.F. West
Authors: Ying Na Zhao, Xiong Feng Zeng, Gui Qin Hou, Wen Li Zhang
Abstract: Nanometer Si powders were used as interlayer materials, which were expected to be microwave heated rapidly and reacted with the surface of Al2O3 ceramics to form the low eutectoid compound. The phenomena of element migration of joint samples were investigated by energy dispersive spectroscopy (EDS) and the interface phase transition was analyzed by X-ray diffraction (XRD). The results indicated that the low eutectoid compound of the joint interface wetted and penetrated to the ceramic surface. The variation of micro-hardness at the interface across the parent material was measured by micro-hardness instrument and the interfacial microstructure and the fracture surface were investigated by scanning electron microscopy (SEM).
Authors: Xiao Yan Chen, Fei Li, Jun Wang, Bao De Sun
Abstract: Interface reactions and wettability between melt superalloys and ceramic mould materials were investigated by using a sessile drop experiment. The wetting angle of the melt alloy on the ceramic material was calculated and the microstructure of the alloy interface was investigated by metalloscope as well as SEM. It was found that active element C in the alloy is an important factor that influences the interface reactions and the wettability. Alloys with C content lower than 0.07wt.% were almost stable on the ceramic material and no interface reaction products were found. However, alloys with C content higher than 0.16wt.% reacted with the ceramic materials. Purple reaction products were found on the alloy surface and sand adhesions were observed at the alloy-ceramic interface. In the non-reactive system, the wetting angle is in the range of 135o-150o. In the reactive system, the wetting angle is lower than 120o.
Authors: P. Mogilevsky, A. Werner, H.J. Dudek
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