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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI În partea de jos este prezentat rezumatul articolului selectat. Pentru revenire la cuprinsul ediţiei din care face parte acest articol, se accesează linkul din titlu. Pentru vizualizarea tuturor articolelor din arhivă la care este autor/coautor unul din autorii de mai jos, se accesează linkul din numele autorului. |
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STUDIA CHEMIA - Ediţia nr.2 din 2009 | |||||||
Articol: |
INVESTIGATION OF UNDERGROUND GAS PIPELINES CORROSION BY OPTICAL AND X-RAYS DIFFRACTION METHODS. Autori: ELEONORA MARIA RUS, CRISTIAN CALIN, IOAN BÂLDEA. |
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Rezumat: This work aims to determine the corrosion behavior of the buried gas pipelines (OLT 35 and OL 37 carbon steel) in salty and swampy soils by optical methods. The aspect of the corroded surface and the nature of corrosion products were studied by metallographic microscopy and by X-ray diffraction. By analyzing the metallographic microscopy for OLT 35 corrosion in soils, one can observe that salty soil is more aggressive than swampy soils. The X-ray diffraction method shows that all types of soil contain the two phases of trivalent iron oxides, in beta and gamma hydrated form. Keywords: carbon steel, buried metallic pipelines, underground corrosion, surface analysis, X-ray diffraction, metallographic microscopy. |
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