Control of kinetics of plasma assisted nitriding process of Ni-base alloys by substrate roughness

• Autorzy: Nowak Wojciech J.

Identyfikatory

DOI

10.2478/amst-2019-0019

• Języki publikacji: EN

Abstrakty

EN

The present study investigated the effect of surface roughness on plasma assisted nitriding (PAN) process kinetics of Ni-base alloys. Two model alloys, namely Ni-10Cr and Ni-14Cr-4Al (wt.%) and commercial Rene 80, were examined. To elucidate the effect of surface roughness on nitriding kinetics, three methods of surface preparation were used, (1) polishing up with 1 μm diamond suspension, (2) grinding up to 220 grit sand-paper, and (3) grit blasting. The samples from each type of material were nitrided under the same conditions and investigated after processing. It was found that increase in roughness results in decreasing nitriding kinetics. The decrease of nitriding kinetics depends on alloy chemical composition, namely more complex chemistry resulted in smaller decrease of kinetics. Moreover, grit-blasting was found to be an improper method for surface preparation for PAN. The responsible mechanism for the effect of surface roughness on PAN kinetics of Ni-base alloys was proposed.

Słowa kluczowe

EN

plasma assisted nitriding; surface roughness; nitriding kinetics; Ni-base alloys

PL

azotowanie jarzeniowe; chropowatość powierzchni; kinetyka azotowania; stopy na bazie niklu

• Wydawca: Komitet Budowy Maszyn PAN ; De Gruyter
• Czasopismo: Advances in Manufacturing Science and Technology
• Rocznik: 2020
• Tom: Vol. 44, nr 3
• Strony: 99--108
• Opis fizyczny: Bibliogr. 43 poz., rys., tab., wykr.

Twórcy

autor

Nowak Wojciech J.

• Department of Materials Science, Faculty of Mechanical Engineering and Aeronautics, Rzeszów University of Technology, Powstanców Warszawy 12, 35-959 Rzeszów, Poland

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).