20 KB133 KB15 KB200020242010Kocijan, Aleksandraletnik:44številka:5str. 239-242ISSN:1580-2949COBISSID:825770URN:URN:NBN:SI:doc-DRHMNK7UenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijeferitna nerjavna jeklakorozijska odpornostmaloogljična jeklazvariThe corrosion behaviour of ferritic stainless steels in alkaline solutions| Korozijsko vedenje feritnih nerjavnih jekel v alkalnih raztopinah|The corrosion resistances of X6Cr17 and X2CrTi17 ferritic stainless steels andcold-rolled, low-carbon steel, as well as circular and transversal welds of X6Cr17 ferritic stainless steel, were investigated in a non-phosphate detergent with a solution pH of 10.5 and at a temperature of 60 °C. The second investigated solution contained the non-phosphate detergent and sodium perborate tetrahydrate at pH 11 and was at a temperature of 90 °C. The potentiodynamic measurements showed that the corrosion resistance decreased from X2CrTi17 and X6Cr17 to the welded specimens and the cold-rolled, low-carbon steel in non-phosphate detergent at the lower temperature. At the elevated temperature and with the addition of sodium perborate tetrahydrate the corrosion stability of all the investigated materials decreased significantlyPreučevali smo korozijsko odpornost vzorcev X6Cr17, X2CrTi17 feritnih nerjavnih jekel, hladno valjanega maloogljičnega jekla in krožnega ter prečnega zvara X6Cr17 feritnega nerjavnega jekla v raztopini nefosfatnega detergenta pri pH 10,5 in temperaturi 60 °C. Druga preiskovana raztopina je vsebovala nefosfatni detergent in natrijev perborat tetrahidrat pri pH 11 in temperaturi 90 °C. Rezultati potenciodinamskih meritev so pokazali, da sta korozijsko najbolj obstojna materiala X2CrTi17 in X6Cr17, manj pa obe vrsti zvarov in hladno valjano maloogljično jeklo. Pri povišani temperaturi in z dodatkom natrijevega perborata tetrahidrata se je korozijska odpornost vseh petih vzorcev izrazito zmanjšalaTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije