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Sustainable Construction and Design <strong>2011</strong> Figure 19. Heat treated specimens abrasion and the connection of layer structure. Figure 20. Not treated specimens abrasion and layer structure 90 Copyright © <strong>2011</strong> by Laboratory Soete
Sustainable Construction and Design <strong>2011</strong> 3 CONCLUSION - The multilayer coatings of hot-dip galvanized abrasion intensity in the test-system does not depend on the fiction speed neither at heat treated nor at not heat treated specimens, but it depends on the medium pressure and on the resistance of medium deriving from that. - The heat treatment improves the abrasive resistance. The higher hardness results higher abrasive resistance improvement. - SEM-pictures and EDS spectroscopy proved that heat treatment results different gradient layer structure and composition. - The linear abrasion dynamics of hot-dip galvanized layers tested does not depend on that, which layer comes to friction connection with abrasive medium. The inner gradient friction character did not effect the abrasion intensity measured, but the resultant of different gradient structure has different abrasive resistance. 4 REFERENCES [1] Arenasa M. A., Damboreneaa J. Medranob J., A., J., García B. A., Rodríguez R. (2002): Corrosion behaviour of rare earth ion-implanted hot-dip galvanised steel. Surface and Coatings Technology, <strong>Volume</strong> 158-159, Page 615-619 [2] Magyar Tűzihorganyzók szövetsége: Szakmai Ismeretek, Dunaújváros, Dunatáj Kiadó Kft., Dunaújváros, 1997 (Association of Hungarian Hot Dip galvanizing Companies. Professional Knowledge. In Hungarian) [3] Dr. Zorkóczi Béla: Metallográfia és anyagvizsgálat, Tankönyvkiadó Budapest, 1975. (Metallurgy and Material Testing. In Hungarian) [4] Magyar Tűzihorganyzók szövetsége, Tűzihorganyzás, CD-kiadvány, 2008. (Association of Hungarian Hot Dip galvanizing Companies. Galvanizing Technologies. In Hungarian) Copyright © <strong>2011</strong> by Laboratory Soete 91
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