Generally, molybdenum, tungsten or tantalum is used as the evaporation source of many kinds of materials because of their high melting points and reasonably low vapor pressures. Therefore, the production of ultrafine particles of molybdenum, tungsten and tantalum has not been achieved by gas evapora
β¦ LIBER β¦
Preparation of ultrafine nickel powder by polyol method and its oxidation product
β Scribed by Zhou Ying; Jin Shengming; Qiu Guanzhou; Yang Min
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 212 KB
- Volume
- 122
- Category
- Article
- ISSN
- 0921-5107
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Ultra-fine amorphous powders in (Fe, Co, Ni)-B binary and ternary systems were produced by the chemical reduction method. The powders have a spherical shape with diameters ranging from 5 to 50 nm. The reaction consists mainly of the process of producing Me2B and Me(Me = Fe, Co, Nil. Fully dense bulk