Microstructure and properties of the cobalt base clad layers after long time service

• Autorzy: Smoleńska H. , Kończewicz W.
• Języki publikacji: EN

Abstrakty

EN

The cobalt base laser cladding layers were investigated after two years of service in two laboratory diesel engines. The microstructures of the clads after service did not demonstrated serious degradation process. Chemical compositions of the used layers and changes in hardness were described. These sorts of layers are suitable for long time service with out substantial damages.

Słowa kluczowe

EN

cobalt base alloy; laser cladding; wear

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2009
• Tom: Vol. 9, nr 4(22)
• Strony: 15--20
• Opis fizyczny: Bibliogr. 8 poz., rys., fot.

Twórcy

autor

Smoleńska H.

autor

Kończewicz W.

• Gdańsk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Engineering, Gdansk, Poland

Bibliografia

• 1. J.L.De Mol Van Otterloo, J.Th.M. De Hosson; Microstructural features and mechanical properties of cobalt-based laser coating; Acta Materalia, vol. 45, no .3, 1997.
• 2. A.S.C. d`Oliveira, R. Vilar, C.G. Feder; High temperature behaviour of plasma transferred arc and laser Co-based alloy coatings; Applied Surface Science 201(2002).
• 3. A.S.C. d`Oliveira, P.S.C.P. da Silva, R.M.C. Vilar; Microstructural features of consecutive layers of Stellite 6 deposited by laser cladding; Surface and Coatings Technology 153 (2002).
• 4. Elliott P., Choose materials for high-temperature environments, Chemical Engineering Progress, 97, 2 (2001) 75-85.
• 5. Schlager D., Theiler C., Kohn H., Protection against high temperature corrosion with laser welded claddings, applied and tested on exhaust valve discs of large diesel engines burning heavy fuel oil, Materials and Corrosion 53, (2002) 103-110.
• 6. Smoleńska H., The gas corrosion of the cobalt base layer at elevated temperature, Journal of Achievements in Materials and Manufacturing Engineering. - Vol. 18, iss. 1/2 (2006), s. 235-238.
• 7. Smoleńska H., Kończewicz W., Analiza własności napawanych laserowo powierzchni przylgni zaworów wylotowych silników okrętowych po korozji w powietrzu i gazach spalinowych, Inżynieria Materiałowa. - R. 27, nr 3/151 (2006), s. 536-539.
• 8. Kończewicz W., Smoleńska H., The resistance investigation of the marine engine exchaust valve using the modelling chamber, Journal of KONES: Powertrain and Transport. - Vol. 15, nr 4 (2008), s. 255-262.