726 KB52 KB200020242014Bílek, PavelBohovičová, JanaHudáková, MáriaJurči, Peterštevilka:2letnik:48str. 159-170COBISSID:1045930ISSN:1580-2949URN:URN:NBN:SI:doc-JZAYBXRYenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijekromov nitridledeburitno jekloorodna jeklatanke plastitribologijaCharacterization and wear performance of CrAgN thin films deposited on Cr-V ledeburitic tool steel| Ocena lastnosti in vedenje pri obrabi tankih plasti CrAgN, nanesenih na ledeburitno orodno jeklo Cr-V|Specimens made from Vanadis 6 cold-work tool steel were machined, ground, heat processed using a standard regime and finally mirror polished. After that they were layered with CrAgN. The Ag-content in the layers was chosen to be inmass fractions w = 3 % and 15 %. Microstructural analyses revealed that the CrN grew in a columnar manner. The addition of 3 % Ag did not influence the manner of growth of the films, but the addition of 15 % Ag made considerable changes to the film growth. Both the hardness and the Young's modulus were not influenced by the incorporation of 3 % Ag, but the addition of 15 % Ag reduced them. The layers with 3 % Ag had excellent adhesion on the steel substrate. On the other hand, the addition of 15 % Ag had a very negative impact on the coating adhesion. The films with the addition of 3 % Ag had superior tribological properties against hard material (alumina) as well as against a soft counterpart (CuSn6 as-cast bronze), while those with 15 % Ag were too soft and they underwent intensive wearVzorci, izdelani iz orodnega jekla Vanadis 6 za delo v hladnem, so bili obdelani, brušeni, toplotno obdelani po navadnem postopku in na koncu poliranido zrcalne površine. Nato je bil nanesen CrAgN. Količina v masnih deležih Ag v nanosu je bila izbrana 3 % in 15 %. Analize mikrostrukture so odkrile, da raste nanos v obliki stebrastih zrn. Dodatek 3 % Ag ni vplival na način rasti nanosa, dodatek 15 % Ag pa je povzročil občutne razlike v rasti nanosa. Oba, trdota in Youngov modul, nista bila odvisna od vnosa 3 % Ag, dodatek 15 % pa ju je zmanjšal. Nanosi s 3 % Ag so imeli dobro oprijemljivost na podlagi iz jekla. Po drugi strani pa je dodatek 15 % Ag močno poslabšal oprijemljivost nanosa. Nanosi s 3 % Ag so imeli boljše tribološke lastnosti pri trdem materialu (aluminijev oksid), kot tudi pri mehkem (liti bron CuSn), medtem ko so bili tisti s 15 % Ag premehki in so izkazovali veliko obraboTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije