Properties of Thermal Spraying Ni-Al Alloy Coatings

• Autorzy: Starosta R.
• Języki publikacji: EN

Abstrakty

EN

The article presents the results of testing of Ni-Al alloy coatings with different chemical and phase composition, which might replace currently used electrolytic chromium coatings. Crust chromium coatings are suitable for reconditioning of machine parts because of their very good maintenance properties. However, due to toxicity of electrolytic chromium bath, their application tends to be restricted. Thermal flame and plasma spraying technologies were chosen for nickel aluminium coating application. Obtained coatings were distinguished by significant porosity of structure and surface roughness. The thickness of coatings ranged from 440 to 683 ěm. Microhardness of coatings was not related to applied metal plating technology but to chemical and phase composition. The more aluminium content in coating the harder the coatings were. The hardness of coatings which resulted from NiAl phase was ca 250 HV 0.04. Flame spray coatings are distinguished by nearly 10 times higher corrosion current density compared comparatively with plasma spray coatings. The value of corrosion potential is influenced by structure and chemical composition of coatings. The more aluminium content caused the lower Ecorr.

Słowa kluczowe

EN

thermal spraying; nickel-aluminium coating; corrosion; intermetallic coating

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2009
• Tom: Vol. 9, nr 1(19)
• Strony: 30--40
• Opis fizyczny: Bibliogr. 14 poz., rys., fot.

Twórcy

autor

Starosta R.

• Gdynia Maritime University, Mechanical Faculty, Department of Marine Maintenance

Bibliografia

• 1. Starosta R., Zieliński A.: Effect of chemical composition on corrosion and wear behaviour of the composite Ni-Fe-Al2O3 coatings. Journal of Materials Processing Technology, 157 – 158 (2004), pp. 434-441.
• 2. Szeptycka B.: Elektroniczne powłoki kompozytowe z osnową niklową jako zamienniki powłok chromowych. Inżynieria Powierzchni 3 (2006) , pp. 55-63.
• 3. Sahraoui T., Fenineche N., Montavon G., Coddet C.: Alternative to chromium: characteristics and wear behavior of HVOF coatings for gas turbine shafts repair (heavy-duty). Journal of Materials Processing Technology 152 (2004), pp. 43–55.
• 4. Konieczny M., Mola R., Własności powłok Ni – fazy międzymetaliczne osadzonej na stali 45. Hutnik – Wiadomości Hutnicze 7-8 (2004), pp. 362-363.
• 5. Starosta R.: Badania potencjodynamiczne natryskiwanych płomieniowo kompozytowych powłok dyspersyjnych z osnową niklową. Kompozyty 2 (2008) pp.195 -200.
• 6. Starosta R.: Ocena wpływu fazy dyspersyjnej na przyczepność natryskiwanych płomieniowo powłok kompozytowych. Inżynieria Materiałowa 5 (2005), pp. 704 – 706.
• 7. Chang J.T., Yeh C.H., He J.L, Chen, K.C.: Cavitation erosion and corrosion behaviour of Ni–Al intermetallic coatings. Wear 255 (2003), pp. 162–169.
• 8. Chen H., Xu C., Qu J., Hutchings I.M., Shipway P.H., Liu J.: Sliding wear behaviour of laser clad coatings based upon a nickel-based self-fluxing alloy co-deposited with conventional and nanostructures tungsten carbide–cobalt hard metal. Wear 259 (2005), pp. 801–806.
• 9. Deshpande S., Sampath S, Zhang H.: Mechanisms of oxidation and its role in microstructural evolution of metallic thermal spray coatings-Case study for Ni–Al. Surface & Coatings Technology 200 (2006), pp. 5395 – 5406.
• 10. Duraiselvam M., Galun R., Siegmann S., Wesling V., Mordike B. L.: Liquid impact erosion characteristics of martensitic stainless steel laser clad with Ni-based intermetallic composites and matrix composites. Wear 261 (2006), pp. 1140–1149.
• 11. Duraiselvam M., Galun R., Wesling V., Mordike B.L., Reiter R., Oligmüller J.: Cavitation erosion resistance of AISI 420 martensitic stainless steel laser-clad with nickel aluminide intermetallic composites and matrix composites with TiC reinforcement. Surface & Coatings Technology 201 (2006), pp. 1289–1295.
• 12. Starosta R., Szczepaniak P.: Ocena odporności korozyjnej powłok z faz NiAl oraz Ni3Al natryskiwanych plazmowo. Inżynieria Materiałowa 3 (2006), pp. 540-543.
• 13. Jankowski J.: Wpływ ogniwa trójelektrodowego Sn-FeSn2-stal na korozję blachy białej. Gdansk University of Technology, Gdańsk ,1995.
• 14. Zakład Metrologii i Jakości. Politechnika Koszalińska. Wyniki pomiarów struktury geometrycznej powierzchni. Praca niepublikowana. Koszalin 2006.