INVESTIGATION OF SURFACE HARDNESS OF THE ELECTROLYTIC HARD CHROMİUM COATED STEELS DEPENDING ON PROCESS PARAMETERS

Danışman Ş., Yıldırım E., Ercan L.

28th National Chemistry Congress, Mersin, Türkiye, 15 - 21 Ağustos 2016, ss.1-5

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Mersin
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-5
  • Erciyes Üniversitesi Adresli: Evet

Özet

Coatings improve the surface properties of metallic and non-metallic materials and increases their range of applications. Electroplated coatings are important process for protection against particle impact, abrasion, erosion, high temperature oxidation, corrosion and wear as well as for reducing friction.   Protective effect of coatings depends on their chemical composition, thickness, hardness, microstructure as well as on their cohesion to the substrate material. For coatings thickness standards are important for avoiding porosity and ensuring good resistance to wear and corrosion.

 

The aim of this work is to evaluate the hardness properties of AISI 1040, AISI 4140 ve AISI 8620 steels coated hard chromium with electroplating. The effect of processing time on the  microhardness and thickness of the coating was investigated. The coating thickness and surface hardness values were found to be increased depending on the coating process time.