17 KB435 KB14 KB200020242013Kumruoglu, Levent CenkÖzel, Ahmetštevilka:3letnik:47str. 307-310ISSN:1580-2949COBISSID:992682URN:URN:NBN:SI:doc-YQ8F5XLOenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijenerjavno jeklonitriranjeobrabaplazemsko elektrolitsko nasičenjePlasma electrolytic saturation of 316 L stainless steel in an aqueous electrolyte containing urea and ammonium nitrate| Plazemska elektrolitsko nasičenje nerjavnega jekla 316 L v vodnem elektrolitu s sečnino in amonijevim nitratom|Plasma electrolytic saturation (PES) is an environmentally friendly electrochemical process that allows altering the surface chemistry and grain size of metallic substrates, negatively biased in an aqueous electrolyte containing ionic species such as N, O and C. Wear- and corrosion-resistive nanocrystalline layers consisting of carbides, nitro carbides, borides and nitro-carbon oxides could be fabricated with PES in short treatment durations. In this study, PES was performed on 316 L stainless steel in an electrolyte containing urea and ammonium nitrate with several treatment durations from 5 s to 30 min. The surface morphology, topography and microstructure were investigated with X-Ray diffraction, optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, a surface profilometer and microhardness testing. The wear and friction properties were evaluated using a ball-on-plate, linear, reciprocating wear test at 1 N to 3 N applied loads with an alumina ball against both the treated and untreated substrates. It was found that PES can increase the wear resistance and mechanical properties of 316 L stainless steelPlazemsko elektrolitsko nasičenje (PES) je okolju prijazen elektrokemijski postopek, ki omogoča spreminjanje površinske kemije in velikost zrn v kovinski podlagi, ki je neustrezna v vodnem elektrolitu, ki vsebuje ione N, O in C. V kratkem času je mogoče s PES izdelati obrabno in korozijsko obstojne nanokristalne plasti iz karbidov, nitrokarbidov, botidov in nitro-karbo-oksidov. V tej študiji je bil PES uporabljen pri nerjavnem jeklu 316 L v elektrolitu, ki je vseboval sečnino in amonijev nitrat in so bili časi obdelave od 5 s do 30 min. Preiskovana je bila morfologija površine, topografija in mikrostruktura z rentgensko difrakcijo, svetlobno mikroskopijo, vrstično elektronsko mikroskopijo, energijsko disperzijsko spektroskopijo, s površinskim profilometrom in meritvijo trdote. Obraba in torne lastnosti so bile ocenjene z metodo kroglica na plošči z linearnim izmeničnim obrabnim preizkusom pri obtežbi od 1 N do 3 N s kroglico iz Alspodaj{2}Ospodaj{3} na obdelani in neobdelani površini. Ugotovljeno je bilo, da PES lahko poveča odpornost proti obrabi in izboljša mehanske lastnosti nerjavnega jekla 316 LTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije