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Diffusion and Dissolution of Co Powder and Ni Powder During Sintering

Song, Yu-Qiang ; Li, Shi-Chun

Jīnshŭ rèchŭlĭ, 2007-07, Vol.32 (7), p.34-37

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Título:
Diffusion and Dissolution of Co Powder and Ni Powder During Sintering
Autor: Song, Yu-Qiang ; Li, Shi-Chun
É parte de: Jīnshŭ rèchŭlĭ, 2007-07, Vol.32 (7), p.34-37
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: The microstructure of sinter of Co powder and Ni powder formed during sintering was studied by OM, SEM, EDS and X-ray diffraction. The formation mechanism of Co-Ni solid solution was discussed and electron density of Co-Ni solid solution was calculated by means of Thomas-Fermi-Dirac-Cheng phase diagram ( TFDC). The results show that the various mixtures of Co and Ni entirely come into being Co-Ni infinite interstitial solid solution, a great deal of holes produce at grain boundary of solid solution because only Co atoms can diffuse into Ni powder granules and Ni atoms hardly diffuse into Co powder granules during sintering at 1 000 deg C for 36 h. The electron density of Co-Ni solid solution is 3. 2709 x 1029/m3.
Idioma: Chinês

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