Tribological behaviour of TiAlN coated carbides in dry sliding tests

• Autorzy: Grzesik W. , Zalisz Z. , Król S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The tribological behaviour of the PVD-TiAlN-coated carbide inserts was studied in dry sliding against carbon and stainless steel and cast iron counterparts. The friction and wear effects were examined at variable sliding speeds and normal loads. Design/methodology/approach: A pin-on-disc device with round tool inserts was applied to conduct friction and wear tests in which both the friction coefficient and the linear wear of the tribo-pairs were continuously recorded versus sliding distance. The volumetric wear rate was used to compare the wear resistance of the tribo-pairs tested. Light microscopy (LOM), scanning electron microscopy (SEM) and X-ray microanalyses by EDAX were applied for observations of wear scars and wear products. Findings: Severe adhesive wear of the mating surfaces was found to be predominant mechanism in dry friction between the TiAlN coating and the AISI 304 austenitic steel. In this case the protective TiAlN layer was removed even under the lowest load and sliding speed applied. On the contrary, both TiAlN/C45 and TiAlN/ EN-GJL-300 pairs showed the mild abrasive wear mechanism with the occurrence of tribo-oxidation. For these cases the protective function of the PVD-arc TiAlN layer appeared to be sufficient. Research limitations/implications: The above findings to be transmitted to machining need confirmation in real machining conditions. However, they suggest serious limitations in use of the coatings tested. Practical implications: The results can be helpful in the tool choice for the three materials machined. Originality/value: Some specific frictional behaviours and relevant wear mechanisms observed are highlighted and quantified.

Słowa kluczowe

EN

wear resistance; pin-on-disc testing; PVD-TiAlN coating

PL

odporność na zużycie; pin-on-disc test; powłoka TiAIN

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 181--184
• Opis fizyczny: Bibliogr. 10 poz., rys., wykr.

Twórcy

autor

Grzesik W.

• Department of Manufacturing Engineering and Production Automation, Technical University, Opole, Poland

autor

Zalisz Z.

• Department of Manufacturing Engineering and Production Automation, Technical University, Opole, Poland

autor

Król S.

• Department of Chipless Technology, Opole University of Technology, Poland

Bibliografia

• [1] W. Grzesik, Advanced Protective Coatings for Manu-facturing and Engineering, Hanser Gardner, Cincinnati, 2003.
• [2] H.G. Prengel, P.C. Jindal, K.H. Wendt et al., A new class of high performance PVD coatings for carbide cutting tools, Surface & Coatings Technology 139 (2001) 25-34.
• [3] F. Klocke, T. Krieg, K. Gerschwiler, R. Fritsch, et al., Improved cutting processes with adapted coating systems, CIRP Annals 47/1(1998) 65-68.
• [4] K. Kutschej, P.H. Mayrhofer, M. Kathrein, P. Polcik, R. Tessardi, C. Mitterer, Structure, mechanical and tribological properties of sputtered Ti1-xAlxN coatings with 0.5txt0.75, Surface & Coatings Technology 200(2005) 2358-2365.
• [5] A. Hörling, L. Hultman, M. Odén, J. Sjölén, L. Karlsson, Mechanical properties and machining performance of Ti1-xAlxN-coated cutting tools, Surface & Coatings Technology 191(2005) 384-392.
• [6] W. Grzesik, Z. Zalisz, P. Nieslony, Friction and wear testing of multilayer coatings on carbide substrates for dry machining applications, Surface & Coatings Technology 155 (2002) 37-45.
• [7] S.Y. Yoon, J.K. Kim, K.H. Kim, A comparative study on tribological behaviour of TiN and TiAlN coatings prepared by arc ion plating technique, Surface & Coatings Technology 161 (2002) 237-242.
• [8] W. Grzesik, P. Nieslony, Prediction of friction and heat flow in machining incorporating thermophysical properties of the coating-chip interface, Wear 256(2004) 108-117.
• [9] R.G. Bayer, Wear Analysis for Engineers. HNB Publishing, New York, 2002.
• [10] I.M. Hutchings, Tribology, Friction and Wear of Engineering Materials. Edward Arnold, London, 1992.