Electroconductive material superior in resistance to fretting corrosion for connection component

Electroconductive material superior in resistance to fretting corrosion for connection component

  • CN 104,078,783 A
  • Filed: 03/18/2014
  • Published: 10/01/2014
  • Est. Priority Date: 03/29/2013
  • Status: Active Application
First Claim
Patent Images

1. the union piece electric conducting material of a resistance to micro-skimming wear excellence, it is characterized in that, described union piece forms as follows with electric conducting material, on the surface of the mother metal being formed by copper alloy lath, forming in order Cu content is that 20~

  • 70at% and average thickness are the Cu-Sn alloy coating of 0.2~

    3.0 μ

    m, with average thickness be the Sn coating of 0.2~

    5.0 μ

    m, and, this material surface is carried out reflow treatment, the arithmetic average roughness Ra of at least one direction is more than 0.15 μ

    m, the arithmetic average roughness Ra of whole directions is below 3.0 μ

    m, expose a part for described Cu-Sn alloy coating on the surface of described Sn coating, it is 3~

    75% that the material surface of described Cu-Sn alloy coating exposes area occupation ratio, wherein, the average crystal grain diameter on described Cu-Sn alloy coating surface is lower than 2 μ

    m.

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