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Študij elektrokemičnih lastnosti osnovne mase ledeburitnih orodnih jekelGrešovnik, FerdinandElektrokemične lastnosti osnovne strukture ledeburitnih orodnih jekel smo raziskovali s snemanjem polarizacijskih krivulj. Meritve smo opravili na enajstih vrstah ledeburitnih orodnih jekel. Vzorci ... so bili različno toplotno obdelani: žarjeni, kaljeni s temperaturi 900 oC, 980 oC, 1040 oC, 1120 oC in 1200 oC ter po kaljenju z navedenih temparatur še popuščani pri 200 oC in 550 oC. Za snemanje polarizacijskih krivulj smo uporabili samo eno vrsto elektrolita: 3% raztopino Kbr v vodi. Poskusi so pokazali, da med preiskovanimi vrstami ledeburitnih orodnih jekel ni bistvene razlike v elektrokemičnih lastnostih, če so vzorci enako toplotno obdelani. Na elektrokemične lastnosti močno vpliva temperatura, s katere vzorce kalimo. Vpliv avstenitizacijske temperature se pozna tudi po naknadnem popuščanju. Čim višja je temperatura avstenitizacije, tem žlahtnejša je osnova preiskovanih jekel. Ugotovili smo, da bi izolacija karbidov pri vseh preiskovanih vzorcih potekala dovolj hitro že pri potencialu - 200 mV.Source: Železarski zbornik. - ISSN 0372-8633 (Let. 10, št. 1, 1976, str. 37-46)Type of material - article, component part ; adult, seriousPublish date - 1976Language - slovenianCOBISS.SI-ID - 47714305
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Grešovnik, Ferdinand | 02770 |
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