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論文
【年度】104
年研發成果
【項目】
論文
【領域】
關鍵技術科專
【類別】
機電運輸
| 計畫名稱 | 高階稀有綠能材料應用研究發展計畫 | | 論文名稱 | Effect of Ni/Fe ratio variation on microstructure of tungsten heavy alloy | | 論文類型 | 研討會論文 | | 發表處 | Taiwan Association for Coatings and Thin Films Technology (TACT) | | 發表人 | Shu-Yi Tsai; Chung-Ta Ni; Kuan-Zong Fung; Chao-NanWei; Hui-Yun Bor | | 發表日期 | 2015/11/15 | | 國家 | 國內 | | 內容摘要 | A tungsten-based material knows as heavy alloys by virtue of their high density have found an increasing number of applications as the combination of density, strength, hardness and corrosion resistance. However, an extreme temperature as high as 2700 °C is required for traditional tungsten powder to be sintered to near full density. In order to fabricate the tungsten heavy alloy target at lower temperature, using carbon-based tungsten and different Ni/Fe ratio to it as the additive because that can reduce the melting point of the matrix and hence enable lower sintering temperatures. The result revealed that the crystallite size of the tungsten heavy alloys reaches around 300 nm after mechanical milling for 24 hours. An increase in the mass ratio of nickel to iron resulted in the increase of dissolved concentration of tungsten in the matrix, almost in a linear manner. |
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