| 喷射成形Zn52Al40Cu2Si6微观形貌及耐磨性能 |
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| 引用本文： | 杨诚笑,杜春风,陈兴,严彪,王军,唐人剑.喷射成形Zn52Al40Cu2Si6微观形貌及耐磨性能[J].摩擦学学报,2009,29(6):584-591. |
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| 作者姓名： | 杨诚笑 杜春风 陈兴 严彪 王军 唐人剑 |
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| 作者单位： | 同济大学材料科学与工程学院,上海200092;;同济大学材料科学与工程学院,上海200092;;同济大学材料科学与工程学院,上海200092;
上海市金属功能材料开发应用重点实验室,上海200094);同济大学材料科学与工程学院,上海200092;
上海市金属功能材料开发应用重点实验室,上海200094);同济大学材料科学与工程学院,上海200092;
上海市金属功能材料开发应用重点实验室,上海200094);同济大学材料科学与工程学院,上海200092;
上海市金属功能材料开发应用重点实验室,上海200094) |
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| 基金项目： | 上海市科委资助项目(05nm05028). |
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| 摘 要： | 采用喷射成形工艺制备高铝锌基合金,利用扫描电镜?金相显微镜?透射电镜及X-射线衍射等表征了合金的磨损形貌和内部组织,采用M2000摩擦试验机考察了高铝锌基合金的摩擦磨损性能.结果表明,沉积坯大部分为粗化均细的共析片层状组织,呈不均匀微观分布态,而不是通常认为的树枝晶结构.沉积过程中形成较多无规则?不均匀分布的孔洞,致密度只有60%左右;由于时效后期的四相反应α+ε→Τ′+η,合金的硬度热处理后下降.试验中,硅颗粒在合金基体中始终呈均匀分布.通过M2000摩擦试验机测试合金的摩擦磨损性能.Zn52Al40Cu2Si6合金在2000N载荷,200r/min试验条件下呈最佳耐磨性能.合金的摩擦系数随着载荷的增加而减小.
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| 关 键 词： | 喷射成形 高铝锌基合金 摩擦磨损 微观组织 |
Wear-Friction Properties and Microstructure of Zn52Al40Cu2Si6 Alloy Prepared by Spray Deposition |
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| YANG Cheng-xiao,DU Chun-feng,CHEN Xing,YAN Biao,WANG Jun and TANG Ren-jian.Wear-Friction Properties and Microstructure of Zn52Al40Cu2Si6 Alloy Prepared by Spray Deposition[J].Tribology,2009,29(6):584-591. |
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| Authors: | YANG Cheng-xiao DU Chun-feng CHEN Xing YAN Biao WANG Jun and TANG Ren-jian |
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| Institution: | School of Material Science &Engineering ,Tongji University,Shanghai 200092,China;School of Material Science &Engineering ,Tongji University,Shanghai 200092,China;School of Material Science &Engineering ,Tongji University,Shanghai 200092,China;School of Material Science &Engineering ,Tongji University,Shanghai 200092,China;Key Laboratory of Development& Application for Functional Metallic Materials, Shanghai 200092,China;School of Material Science &Engineering ,Tongji University,Shanghai 200092,China;Key Laboratory of Development& Application for Functional Metallic Materials, Shanghai 200092,China;School of Material Science &Engineering ,Tongji University,Shanghai 200092,China;Key Laboratory of Development& Application for Functional Metallic Materials, Shanghai 200092,China |
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| Abstract: | A new Zn-based alloy with high Al content was prepared by spray forming and its microstructure and phase characteristics were investigated by scanning electron microscopy(SEM), transmission electron microscopy (TEM) and X-ray diffraction(XRD).It was found the alloy was consisting of Zn-Al eutectoid structure and nano-scale dispersed precipitation. Many anomalous pores were introduced into the alloy during deposition and porosity was over 10%. The best wear resistance was obtained for the heat-treated Zn-40Al-2Cu-6Si alloy under 2000N and 200r/min. It was found that the friction coefficient of the alloy decreased within creasing load. |
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| Keywords: | spray deposition Zn-Al alloy wear and friction microstructure |
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