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| Titanium alloys are popular used in many fields such as spaceflight and car manufacturing. However, titanium alloy has disadvantages of being easy to scoring, scratching or seizure and low wear resistance. Iron electroplating coating is an important technique for repairing defective surface, and structures which usually been provided by this way greatly influence the tribological characteristics of the specimens. When it lays over the Ti or Titanium alloy specimens' surface, the properties defects of Ti and Titanium alloys can been fetched up. On the basis of the tested tribological characteristics and microstructure of the plated specimens, it further discussed: (i) the reasons of forming the surface microstructure; (ii) the relationship between the surface microstructure of iron electroplating coating and its properties. (iii) The characteristics iron electroplating coating and Titanium alloy. Results show that: (a) nanocrystalline grains is achievable in iron electroplating coating at low temperature, hydrogen gassing is likely the direct reason to cause crack of iron electroplating coating; (b) the impurities and the surface stress of iron electroplating coating are likely the factors to accelerate the propagation of crack; (c) iron plating on Titanium alloy piece can increase the surface hardness and its wear resistance. |
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| Keywords:Titanium alloy; iron electroplating; microstructure; nanocrystalline grains; tribological characteristic |
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