Low-temperature sintering of FeCuCo based pre-alloyed powder for diamond bits |
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| Authors: | Delong Xie Long Wan Dongdong Song Haiqing Qin Xiaoyi Pan Feng Lin Xiaohu Fang |
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| Affiliation: | 1.College of Material Science and Engineering,Hunan University,Changsha,China;2.Guangxi Key Laboratory of Superhard Materials,Guilin,China;3.Chinese National Engineering Research Center for Special Mineral Materials,Guilin,China;4.China Nonferrous Metal (Guilin) Geology and Mining Co., Ltd,Guilin,China |
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| Abstract: | We studied the effects of sintering temperature on FeCuCo based pre-alloyed powder for diamond bits. The FeCuCo composite was fabricated by co-precipitation method. With the addition of tungsten carbide (WC), sintering under different temperatures was investigated. Mechanical properties of the FeCuCo based matrix were systematically studied. The structure of the composite was evaluated by X-ray diffraction (XRD) and scanning electron microscope (SEM) was used to analyze the surface of the powder and matrix. The suitable sintering temperature was determined through differential scanning calorimeter (DSC). Micro drilling experiments were performed, and 820 °C was identified to be the ideal sintering temperature, at which the matrix shows the best mechanical properties and drilling performance. |
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