Fretting resistance of laser coatings

I. A. Vishnevetskaya; N. N. Golego; A. V. Solovyov; V. S. Volkov

doi:10.1117/12.171631

1 April 1994 Fretting resistance of laser coatings

I. A. Vishnevetskaya, N. N. Golego, A. V. Solovyov, V. S. Volkov

Proceedings Volume 2257, Russia National Conference: Industrial Lasers and Laser Material Processing; (1994) https://doi.org/10.1117/12.171631
Event: Industrial Lasers and Laser Material Processing: Russian National Conference, 1993, Shatura, Moscow Region, Russian Federation

Abstract

Comparative investigations of fretting-resistance of laser coatings applied on high-strength steel and nickel alloys were carried out over a wide range of temperatures under conditions approximate to operating ones at dynamic vibrocontact loading. At 1000 degree(s)C carbide- containing coats were demonstrated to be correlated according to wear resistance with cast heat-resistant alloys. They are several times superior to carbideless coatings, including an argon-arc coat used during repair of turbine engine blades. At 1200 degree(s)C carbide- containing coats maintain their strength as opposed to cast materials and coats based on nickel. Tests performed at room temperature show that coatings of self-fluxing alloy powders increase 2.3 to 3.5 times the fretting resistance of 30X(Gamma) CA volume-hardened steel and as a mixture with carbide powder nearly by an order, whereas laser hardening by both continuous and pulse-periodic beam raises fretting resistance only 1.4 times. The obtained results indicate that application of laser coatings on friction pairs operating under the discussed conditions is advisable.

Citation Download Citation

I. A. Vishnevetskaya, N. N. Golego, A. V. Solovyov, and V. S. Volkov "Fretting resistance of laser coatings", Proc. SPIE 2257, Russia National Conference: Industrial Lasers and Laser Material Processing, (1 April 1994); https://doi.org/10.1117/12.171631

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