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首页> 外文会议>2002 World Congress on Powder Metallurgy amp; Particulate Materials Pt.8 Jun 16-21, 2002 Orlando, FI >Effects of Elemental Cr Addition on Sintering and Mechanical Properties of Cu-Sn Alloy Compacts
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Effects of Elemental Cr Addition on Sintering and Mechanical Properties of Cu-Sn Alloy Compacts

机译：Cr元素添加量对Cu-Sn合金压块烧结及力学性能的影响

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摘要

In the previous paper, we reported the densification of the bronze matrix is promoted by the diffusion of Cr under solid state sintering at 1030K. In the present work, the effects of Cr particle sizes on sintering and mechanical properties of Bronze-Cr alloy were investigated and discussed for sintered bearing material withstanding in the use of higher load applications. Mixed powders were prepared from elemental Cr powders and water-atomized 90Cu-10Sn powders, the particles size of which are 150μm and lower and 1～38μm respectively. Compacts pressed at 390MPa were sintered at 1030K for 3.6～180ks in H_2, Tensile strength of Bronze-2mass%Cr which Cr particle size of 106～150μm was lower than Bronze-Omass%Cr at 3.6ks sintering time. With increasing sintering time, tensile strength of 2mass%Cr increased, and became the same with Omass%Cr after 90ks sintering time. On the other hand, tensile strength increased with decreasing of Cr particle size. Also, Bronze -2mass%Cr alloy was confirmed to have good tribological properties as compared with Bronze -Omass%Cr.
机译：在先前的论文中，我们报道了在1030K固态烧结下Cr的扩散促进了青铜基体的致密化。在目前的工作中，研究了铬颗粒尺寸对青铜-铬合金的烧结和力学性能的影响，并讨论了承受较高载荷应用的烧结轴承材料。由元素铬粉和水雾化的90Cu-10Sn粉制备混合粉，其粒径分别为150μm以下和1〜38μm。在H_2中，在1030K下烧结压制压力为390MPa的压坯3.6〜180ks，在3.6ks的烧结时间下，Bronze-2mass％Cr的拉伸强度为106〜150μm，Cr粒度低于Bronze-Omass％Cr。随着烧结时间的增加，2ks％Cr的拉伸强度增加，并且在90ks的烧结时间后与omass％Cr相同。另一方面，抗拉强度随着Cr粒径的减小而增加。另外，与青铜-质量％Cr相比，证实了青铜-2质量％Cr合金具有良好的摩擦学性能。

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