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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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激光熔覆多元复合硬质合金覆层中颗粒相的行为特征
, PP. 1027-1030
Keywords: 激光熔覆,硬质合金,颗粒相,梯度分布
Abstract:
通过对Ｃｏ基ＷＣ－ＴｉＣ－ＴａＣ多元复合硬质合金覆层中颗粒相的行为特征的研究表明,从激光熔覆层底部到顶部ＴｉＣ颗粒呈梯度递增分布,并伴有一定的聚集长大现象；而ＷＣ,ＴａＣ出现碎化（熔化烧损）现象,且熔化烧损程度大于ＴｉＣ.熔覆层中明显出现以ＴｉＣ为黑色芯部,以（Ｗ,Ｔｉ,Ｔａ）Ｃ复式碳化物为外围的包覆结构.
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