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By doping Co and/or Fe or Mn or Zn or Ni in WC-Co nanocomposite, nanocrystalline cemented carbide with inhibited grain growth were obtained. XRD showed peaks characterizing WC and Co in case of WC-15 wt.% Co, but showed addition peaks characterizing some oxides of tungsten and cobalt with W metal in case of WC-10 wt.% Co and/or 5 wt.% Fe of Mn or Zn or Ni. The crystallite size of the prepared WC-15 wt.% Co and heat- treated at 1000 8C was in the range of 1.1-7.4 nm, while it was 12-50 nm for WC-Co containing Fe or Mn or Zn or Ni as detected from XRD. On the other hand, the particle size was in the range of 200-400 and 300-500 nm, respectively, as detected from TEM and SEM. |
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С³æ¸ç: ½ð±Ò+3, ·ÒëEPI+1, ¡ïÓаïÖú 2012-11-19 19:09:03
°®ÓëÓêÏÂ: ·ÒëEPI-1 2012-11-19 19:45:27
phu_grassman: ½ð±Ò+1, thanks for your suggestion. 2012-11-25 13:09:07
С³æ¸ç: ½ð±Ò+3, ·ÒëEPI+1, ¡ïÓаïÖú 2012-11-19 19:09:03
°®ÓëÓêÏÂ: ·ÒëEPI-1 2012-11-19 19:45:27
phu_grassman: ½ð±Ò+1, thanks for your suggestion. 2012-11-25 13:09:07
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2Â¥2012-11-18 22:22:48
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3Â¥2012-11-19 19:07:35
Elaine³æ³æ³æ
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4Â¥2012-11-24 09:30:54














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