The Effect of H3BO3 Microaddition on Microstructure of Ni/MgO Sintered Compact by Co-Precipitation Method

Ning Ning Zhou; Dong Ying Ju; Wan Yu Ding

doi:10.4028/www.scientific.net/MSF.750.168

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HomeMaterials Science ForumMaterials Science Forum Vol. 750The Effect of H3BO3 Microaddition on...

The Effect of H₃BO₃ Microaddition on Microstructure of Ni/MgO Sintered Compact by Co-Precipitation Method

Abstract:

In the present work, Ni/MgO powder was prepared by co-precipitation in which CO restore NiO to elemental subtance Ni due to C2O42- was decompose to CO and CO2 at 700°C. As the process of the second sintering, H3BO3 was added into the sintered powder of 700°C and was grinded. Then the powder of H3BO3 added was sintered at 800°C，so that the powder was refined, obviously. Thermogravimetric analysis (TGA) and differential thermal analysis(DTA) was carried out in CO2 flow at 10°C/min. X-ray diffraction (XRD) was carried out on a X-ray diffractometer operated at 20KV and 40mA. The microstructures and morphologies were studied by EPMA and XPS.

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Periodical:

Materials Science Forum (Volume 750)

Pages:

168-171

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.750.168

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Online since:

March 2013

Authors:

Ning Ning Zhou, Dong Ying Ju, Wan Yu Ding

Keywords:

Co-Precipitation, Refinement, Thermal Decomposition, Uniform

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References

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