金属/碳石墨复合材料的密度与硬度变化规律研究  被引量:2

An Investigation on Bulk Density and Shore Hardness of Metal/Carbon Graphite Composites

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作  者:魏坤霞[1] 孙园[1] 魏伟[1] 杜庆柏[1] 胡静[1] 

机构地区:[1]常州大学材料科学与工程学院,常州213164

出  处:《材料导报》2014年第16期81-85,共5页Materials Reports

基  金:江苏省自然科学基金(BK2012594;BK20131144);常州市科技计划项目(CZ20130021)

摘  要:以铝粉、铜粉、石墨和高碳为原料,酚醛树脂为粘结剂,通过机械混捏一冷压成型一加热固化制备了金属/碳石墨复合材料。研究了铝粉和铜粉添加量、成型压力对复合材料体积密度、肖氏硬度的影响。根据实验数据拟合,建立了金属/碳石墨复合材料体积密度、肖氏硬度与金属粉含量之间的定量关系。在10~15MPa下铝粉含量为20%~25%时,铝/碳石墨复合材料的最大体积密度约为1.71g/cm3、最大肖氏硬度约为84HS;在15MPa下铜粉含量为25%时,铜/碳石墨复合材料的体积密度达到1.84g/cm3,肖氏硬度达到90HS。因此,铜/碳石墨复合材料更适宜用于机械密封。Metal/carbon graphite composites (CGC) were prepared from the graphite, carbon, aluminum and copper powders with phenolic resin as the binder by mechanical kneading, cold moulding and heat curing. The effects of the aluminum and copper powder contents and molding pressure on the bulk density and the shore hardness of CGC were investigated. According to the function fitting of the experimental data, a quantitative relationship was established between the bulk density and the shore hardness with the metal powder contents, respectively. Under the moulding pressure 10--15 MPa and the content of aluminum powder 20%--25%, the maximum of the bulk density and the Shore hardness of A1/CGC arrived at 1.71 g/cm3 and 84HS, respectively. Under the moulding pressure 15 MPa and the content of copper powder 25%, the maximum of the bulk density and the Shore hardness of Cu/CGC arrived at 1.84 g/cma and 90HS, respectively. Therefore,Cu/CGC has better potential applications for mechanical seals.

关 键 词:金属 碳石墨 复合材料 体积密度 肖氏硬度 

分 类 号:TB333[一般工业技术—材料科学与工程]

 

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