Technological Study of WC-6Co Nanocomposite Powder Preparation with Spray Conversion Method AITranslate
Abstract AITranslate
Using ammonium metatungstate（AMT）,cobalt acetate and organic carbon as raw materials and deionized water as solvent,WC-6Co nanocomposite powder was prepared by the new technology of spray drying-calcination-ball milling-continuous reduction carbonization.Specific surface area,phase composition and morphology of the powder were analyzed by nitrogen adsorption method,X-ray diffraction（XRD）and scanning electron microscope（SEM）,respectively.The effects of ball milling on the performance of W-Co composite oxide powder were investigated as well as specific surface area change of the powder during continuous reduction carbonization.The experimental results show that ball milling before continuous reduction carbonization can effectively crush the powder.And the powder has better crushing effect and more uniform particle size distribution by increasing ball to powder ratio or extending ball milling time.When the ratio and time are 10∶1and 240 min,the powder has the optimal crushing and dispersing effect with 11.62m2/g specific surface area.Ball-milled W-Co composite oxide powder is agglomerated,sintered and pre-alloyed during continuous reduction carbonization to generate WC-6Co composite powder with an average particle size of 80 nm.
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Basic Information:
DOI：
Chinese Library Classification Number:TF123.74[冶金工程—粉末冶金]
Citation Information:
Using ammonium metatungstate（AMT）,cobalt acetate and organic carbon as raw materials and deionized water as solvent,WC-6Co nanocomposite powder was prepared by the new technology of spray drying-calcination-ball milling-continuous reduction carbonization.Specific surface area,phase composition and morphology of the powder were analyzed by nitrogen adsorption method,X-ray diffraction（XRD）and scanning electron microscope（SEM）,respectively.The effects of ball milling on the performance of W-Co composite oxide powder were investigated as well as specific surface area change of the powder during continuous reduction carbonization.The experimental results show that ball milling before continuous reduction carbonization can effectively crush the powder.And the powder has better crushing effect and more uniform particle size distribution by increasing ball to powder ratio or extending ball milling time.When the ratio and time are 10∶1and 240 min,the powder has the optimal crushing and dispersing effect with 11.62m2/g specific surface area.Ball-milled W-Co composite oxide powder is agglomerated,sintered and pre-alloyed during continuous reduction carbonization to generate WC-6Co composite powder with an average particle size of 80 nm.
quote
| GB/T 7714-2015 | [1] WU Jie, LV Jian, YANG Jian-gao, et al. Technological Study of WC-6Co Nanocomposite Powder Preparation with Spray Conversion Method[J]. Rare Metals and Cemented Carbides, 2016(1): 30-34. |
| MLA | [1] WU Jie, et al., "Technological Study of WC-6Co Nanocomposite Powder Preparation with Spray Conversion Method." Rare Metals and Cemented Carbides, no. 1, 2016, pp. 30-34. |
| APA | [1] WU Jie, LV Jian, YANG Jian-gao, LIU Fang, WANG Zhong-hua, HUANG Zhu, & REN Xing-run. (2016). Technological Study of WC-6Co Nanocomposite Powder Preparation with Spray Conversion Method. Rare Metals and Cemented Carbides(1), 30-34. |
| IEEE | [1] WU Jie, LV Jian, YANG Jian-gao, LIU Fang, WANG Zhong-hua, HUANG Zhu, and REN Xing-run, "Technological Study of WC-6Co Nanocomposite Powder Preparation with Spray Conversion Method," Rare Metals and Cemented Carbides, no. 1, pp. 30-34, 2016. keywords: {WC-6Co nanocomposite powder;spray conversion;ball milling;continuous reduction carbonization} |