Comparison in abrasion resistance between hardened 8620 steel and coated by Ti/TiN

• Autorzy: Vite, M. , Hilerio, I. , Mathia, T.

Warianty tytułu

PL

Porównanie odporności na zużycie ścierne utwardzonej stali 8620 oraz pokrytej powłoką Ti/TiN

• Konferencja: Advanced Materials and Technologies, AMT'2004 : XVII Physical Metallurgy and Materials Science Conference (XVII; 20-24.06.2004; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

The abrasive wear of 8620 tempered and quenched steel under aggressive conditions was investigated and it is comparated with samples of 8620 steel recovered by layers TiN in the same abrasion conditions. Thermal treatment of the 8620 steel specimens was carried out at 900°C until room temperature. After quenching, the samples wear tempered below the martensitic temperature in order to increase hardness and wear resistance. Recovering samples 8620 steel with TiN were made by magnetron sputtering technique. In these experiments, a suspension of silica sand (1.5 dm^3) and water (0.94 dm^3) was employed as a very aggressive abrasive wear agent. The tribometer used in the abrasion tests, of the wet-sand/rubber-wheel type, was designed and constructed by the first author according to the ASTM G-105 specification. Weight loss of the specimens was measured as a function of the number of cycles and the sliding distance. These results are discussed and compared. Significant improvement in the wear resistance of the recovered steel were observed when compared to the thermal treated samples.

PL

W pracy porównano odporność na zużycie ścierne stali 8620 po ulepszaniu cieplnym z próbkami tego z samego gatunku stali pokrytymi powłoką Ti/TiN. W celu zwiększenia twardości oraz odporności na zużycie przeprowadzono obróbkę cieplną stali 8620 poprzez hartowanie z temperatury 900°C a następnie odpuszczanie. Część utwardzonych próbek stalowych pokryto powłoką Ti/TiN wykonaną techniką osadzania magnetronowego. W celu wyznaczenia odporności na zużycie ścierne badanych materiałów jako czynnik ścierny wykorzystano zawiesinę krzemionki (1.5 dm^3) oraz wodę (0.94 dm^3). Do badań tribologicznych zastosowano urządzenie zaprojektowane i skonstruowane przez pierwszego z autorów, zgodnie ze specyfikacją ASTM G-105. Ubytek masy badanych próbek wyznaczano w funkcji liczby cykli oraz drogi tarcia. Wyniki badań wskazują na znaczący wzrost odporności na zużycie ścierne próbek pokrytych powłoką Ti/TiN w stosunku do stali po ulepszaniu cieplnym.

Słowa kluczowe

PL

stal; powłoka Ti/TiN; odporność na ścieranie; obróbka cieplna; twardość

• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2004
• Tom: R. XXV, nr 3
• Strony: XXXII-XXV
• Opis fizyczny: Bibliogr. 26 poz., tab., rys.

Twórcy

autor

Vite, M.

• SEPI ESIME IPN. Departamento de Ingenieria Mecanica, D.F. Mexico

autor

Hilerio, I.

• Universidad Autónoma Metropolitana. Unidad Azcapotzalco. Departamento de Materiales, D.F. Mexico

autor

Mathia, T.

• Ecole Centrale de Lyon. Laboratoire de Tribologie et Dynamiąue des Systemes. Ecully, France

Bibliografia

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