• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Researches in Powder Metallurgy >The Influence of Cu-Coating versus Admixing on Mechanical Properties and Dimensional Change of Sintered Fe-Cu Parts
【24h】

The Influence of Cu-Coating versus Admixing on Mechanical Properties and Dimensional Change of Sintered Fe-Cu Parts

机译：镀铜和混合对Fe-Cu烧结零件力学性能和尺寸变化的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The differences in mechanical properties of pressed and sintered specimens made from mixtures of iron and copper powders or from copper-coated iron powders, produced by a cementation process, were studied. For this purpose different copper contents were used (3, 8 or 12wt%) and the oxygen content of the coated powders was measured. After sintering at 1120℃ for 60 minutes in hydrogen flow, microgradient structures were observed. The samples were investigated by light optical microscopy and tested under bending and tensile loads. Young's Moduli were calculated from resonance frequencies. The copper-coating of the iron powder results in an improvement of all properties, owing to a more homogeneous copper distribution and the absence of large secondary pores, compared to specimens made from mixtures of iron and copper powders. In the case of Fe-12Cu (coated), all determined properties tend to result in a maximum: highest sintered density (7,33 g/cm~3), tensile strength (489 MPa), transverse rupture strength (1098 MPa) and apparent hardness (162 HV10). The Young's Modulus (150 GPa) of coated Fe-12Cu is nearly the same as that of sintered iron (154 GPa).
机译：研究了通过胶结工艺生产的铁和铜粉混合物或镀铜铁粉制成的压制和烧结试样的机械性能差异。为此目的，使用不同的铜含量（3、8或12wt％），并测量涂覆粉末的氧含量。在氢气流中于1120℃烧结60分钟后，观察到微梯度结构。通过光学显微镜检查样品，并在弯曲和拉伸载荷下进行测试。由共振频率计算杨氏模量。与由铁和铜粉混合物制成的样品相比，铁粉的铜涂层可改善所有性能，这归因于更均匀的铜分布和不存在大的次级孔。对于Fe-12Cu（涂层），所有确定的性能都趋于最大：最高烧结密度（7.33 g / cm〜3），抗张强度（489 MPa），横向断裂强度（1098 MPa）和表观硬度（162 HV10）。涂覆的Fe-12Cu的杨氏模量（150 GPa）与烧结铁（154 GPa）几乎相同。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号