. . . "0"^^ . "Cathodic passivation of steel"@en . "0"^^ . "2007-01-01+01:00"^^ . "1"^^ . " migration" . "Korozn\u00ED chov\u00E1n\u00ED uhl\u00EDkov\u00E9 oceli v galvanick\u00FDch i elektrolytick\u00FDch \u010Dl\u00E1nc\u00EDch m\u016F\u017Ee b\u00FDt ovliv\u0148ov\u00E1no katodicky vyvolanou pasivac\u00ED. T\u00FDk\u00E1 se to p\u0159edev\u0161\u00EDm expozice v neutr\u00E1ln\u00EDm vodn\u00E9m prost\u0159ed\u00ED za omezen\u00E9 konvekce (ocelov\u00E9 konstrukce v p\u016Fd\u011B, p\u0159\u00EDrodn\u00EDch\u00A0a pr\u016Fmyslov\u00FDch vod\u00E1ch, v\u00FDztu\u017Ee ve zkarbonatovan\u00E9m vlhk\u00E9m betonu). V\u00A0projektu chceme experiment\u00E1ln\u011B a s\u00A0pou\u017Eit\u00EDm modelov\u00FDch v\u00FDpo\u010Dt\u016F prok\u00E1zat, \u017Ee ochrann\u00E9 \u00FA\u010Dinky katodick\u00E9 polarizace \u00A0v\u00A0podm\u00EDnk\u00E1ch omezen\u00E9 konvekce spo\u010D\u00EDvaj\u00ED zejm\u00E9na v\u00A0alkalizaci elektrolytu v\u00A0mezn\u00ED vrstv\u011B a v\u00A0odstran\u011Bn\u00ED stimul\u00E1tor\u016F koroze (chloridy, s\u00EDrany) z\u00A0t\u00E9to\u00A0vrstvy, \u010D\u00EDm\u017E se vytv\u00E1\u0159ej\u00ED podm\u00EDnky pro katodickou pasivaci povrchu. Ochrann\u00FD \u00FA\u010Dinek katodick\u00E9 polarizace m\u016F\u017Ee b\u00FDt podpo\u0159en i vznikem vrstvy nerozpustn\u00FDch slou\u010Denin vyvolan\u00FD jak migrac\u00ED iont\u016F, tak chemick\u00FDmi p\u0159em\u011Bnami t\u00E9to vrstvy. V\u00A0z\u00E1vislosti na slo\u017Een\u00ED prost\u0159ed\u00ED, transportn\u00EDch podm\u00EDnk\u00E1ch a proudov\u00E9 hustot\u011B bude ur\u010Den vliv samovoln\u00E9 i vnucen\u00E9 katodick\u00E9 polarizace. Z\u00EDskan\u00E9 poznatky p\u0159isp\u011Bj\u00ED k\u00A0podrobn\u011Bj\u0161\u00EDmu objasn\u011Bn\u00ED z\u00E1kladn\u00EDch" . " passivation" . . . . . . . . . "http://www.isvav.cz/projectDetail.do?rowId=GA106/07/1038"^^ . " electrochemical corrosion" . . . "metallic corrosion; passivation; electrochemical corrosion; migration; cathodic protection"@en . . "2009-04-22+02:00"^^ . . "2015-01-22+01:00"^^ . . "."@en . "GA106/07/1038" . "Katodick\u00E1 pasivace oceli" . . "2009-12-31+01:00"^^ . "Projekt byl vy\u0159e\u0161en, vyt\u010Den\u00E9 \u00FAkoly byly v z\u00E1sad\u011B spln\u011Bny, av\u0161ak publika\u010Dn\u00ED v\u00FDstupy nemaj\u00ED vysokou kvalitu. V\u00FDsledkem \u0159e\u0161en\u00ED je pouze 1 publikace v impaktovan\u00E9m \u010Dasopise pr\u016Fm\u011Brn\u00E9 \u00FArovn\u011B (Cement Concrete Res.), kter\u00E1 v\u0161ak paradoxn\u011B nen\u00ED citovan\u00E1 v Z\u00E1v\u011Bre\u010Dn\u00E9"@cs . . . "Corrosion of carbon steel in galvanic and electrolytic cells can be influenced by cathodic induced passivation. In particular, it concerns an exposure in an aqueous environment with limited convection (in soil, natural or industrial waters, in wet carbonated concrete). The aim of the project is to prove experimentally, and by mathematical modeling that the protective effects of cathodic polarization of a steel surface consist in alkalization of electrolyte and in removal of corrosion stimulators (chlorides, sulphates) from the boundary layer of electrolyte by migration. The protective effect of cathodic polarization may also be supplemented by formation of an insoluble layer formed by ion migration and alkalization (formation of geopolymers). The effects of spontaneous or intentional cathodic polarization will be assigned in relationship of environment composition, transport conditions in the solution and current density. Obtained results will contribute to a more detailed understanding of"@en . "13"^^ . . "13"^^ . "metallic corrosion" .