Preparation of Molybdenum Silicide Powders by Solid State Reactions (粉末製造技術<特集>)
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概要
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The formations of molybdenum silicides from various reaction systems were investigated in Ar or Ar+H<SUB>2</SUB> atmosphere at 1200-1400°C in order to produce fine MoSi<SUB>2</SUB> powder. The direct reaction of Mo and Si powders produced MoSi<SUB>2</SUB> by heating at 1300-1400°C. However, the product was hard agglomerates. The reduction of molybdenum oxide with SiC formed mainly Mo<SUB>5</SUB>Si<SUB>3</SUB>C and Mo<SUB>5</SUB>Si<SUB>3</SUB>, and the<BR>amount of MoSi<SUB>2</SUB> was small. The carbothermal reduction of molybdenum oxide and silica gave MoSi<SUB>2</SUB> powder at 1400°C. The reaction was stimulated in Ar+H<SUB>2</SUB> atmosphere compared with Ar atmosphere. The agglomeration of particles was weak, and the primary size was 0.5-2 μm.
- 社団法人 粉体粉末冶金協会の論文
著者
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Hojo Junichi
Dept.of Applied Chemistry Faculty Of Eng. Kyushu Univ.
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Ishizaka Yasunori
Dept. Chem. Sci. & Tech., Fac. Eng., Kyushu Univ.
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Ishizaka Yasunori
Dept. Chem. Sci. & Tech., Fac. Eng., Kyushu Univ.
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Hojo Junichi
Dept. Chem. Sci. & Tech., Fac. Eng., Kyushu Univ.
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