Preparation of Ni-coated Si3N4 powders via electroless plating method |
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Authors: | Jinhui Dai Xizhong Liu Huazhang Zhai Zhongfang Liu Jintao Tian |
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Affiliation: | aInstitute of Materials Science and Engineering, Ocean University of China, Songling Road 238, Qingdao 266100, Shandong Province, PR China;bSchool of Materials and Engineering, Beijing Institute of Technology, Beijing 100081, PR China |
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Abstract: | The Ni/Si3N4 coated powders were successfully prepared via electroless plating method by using hydrazine hydrate (N2H4·H2O) as a reducing agent. The coated powders were characterized with several techniques such as scanning electron microscope, energy dispersive spectrometer, Transmission electron microscopy, high-resolution transmission electron microscopy and X-ray diffraction to determine particle size, composition, phase and morphology. It indicated that the core–shell structure of Ni/Si3N4 has been constructed in the present method, the Ni layer on the surface of Si3N4 particles was relatively continuous and uniform, but it is inevitable that only in very small area occurred the aggregation of Ni particles. In principle, the coated process was successful and expectable. |
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Keywords: | A Powders: chemical preparation B Composites C Microstructure D Si3N4 |
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