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Pregled bibliografske jedinice broj: 86929

Analysis of the topographic criteria for pitting evaluation


Esih, Ivan; Juraga, Ivan; Šimunović, Vinko
Analysis of the topographic criteria for pitting evaluation // 15th International Corrosion Congress Frontiers in Corrosion Science and Technology / Morcillo, Manuel (ur.).
Granada: National Centre for metallurgical research, 2002. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


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Naslov
Analysis of the topographic criteria for pitting evaluation

Autori
Esih, Ivan ; Juraga, Ivan ; Šimunović, Vinko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
15th International Corrosion Congress Frontiers in Corrosion Science and Technology / Morcillo, Manuel - Granada : National Centre for metallurgical research, 2002

Skup
15th International Corrosion Congress Frontiers in Corrosion Science and Technology

Mjesto i datum
Granada, Španjolska, 22-27. 08. 2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
pitting corrosion; topographic criteria; damaging risk

Sažetak
Pitting corrosion is the most frequent form of the electrochemical deterioration caused by local depassivation of metals which are usually in passive state like stainless steels, Ni-alloy, Al and Al-alloys, Ti-alloys etc. Pitting has often catastrophic consequences for thin wall and mechanically loaded structures (eg leakahes of pipes and vessels, deformation and fracture of high pressure equipment and carryng constructions). Technical damaging effects of pitting depend, first of all, on topography of metal destruction causing local decline of pipes and vessels walls as well as loss in mechanical properties. Topographic characterisation of pitting is brought about by means of some quantitative criteria. According to ASTM G 46-94 they are: - pits density (pits number per unit of the observed area) - average pit size (orifice area) - average pit depth - pitting factor (the ratio between maximum pit depth and average corrosion penetration). The significance of these and many other criteria has been analysed. Among them are eg: - maximum pit depth - pit size and depth variability indices - average corrosion non-uniformity index - pitting penetration density and intensity etc. By combination of criteria from ASTM G 46-94 except pitting factor, the meaning of which is ambiguous, with several other criteria it is possible to get better insight into technical damaging risk of pitting corrosion.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Projekti:
120089

Ustanove:
Fakultet strojarstva i brodogradnje, Zagreb

Profili:

Avatar Url Vinko Šimunović (autor)

Avatar Url Ivan Juraga (autor)

Avatar Url Ivan Esih (autor)


Citiraj ovu publikaciju:

Esih, Ivan; Juraga, Ivan; Šimunović, Vinko
Analysis of the topographic criteria for pitting evaluation // 15th International Corrosion Congress Frontiers in Corrosion Science and Technology / Morcillo, Manuel (ur.).
Granada: National Centre for metallurgical research, 2002. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Esih, I., Juraga, I. & Šimunović, V. (2002) Analysis of the topographic criteria for pitting evaluation. U: Morcillo, M. (ur.)15th International Corrosion Congress Frontiers in Corrosion Science and Technology.
@article{article, author = {Esih, Ivan and Juraga, Ivan and \v{S}imunovi\'{c}, Vinko}, editor = {Morcillo, M.}, year = {2002}, keywords = {pitting corrosion, topographic criteria, damaging risk}, title = {Analysis of the topographic criteria for pitting evaluation}, keyword = {pitting corrosion, topographic criteria, damaging risk}, publisher = {National Centre for metallurgical research}, publisherplace = {Granada, \v{S}panjolska} }
@article{article, author = {Esih, Ivan and Juraga, Ivan and \v{S}imunovi\'{c}, Vinko}, editor = {Morcillo, M.}, year = {2002}, keywords = {pitting corrosion, topographic criteria, damaging risk}, title = {Analysis of the topographic criteria for pitting evaluation}, keyword = {pitting corrosion, topographic criteria, damaging risk}, publisher = {National Centre for metallurgical research}, publisherplace = {Granada, \v{S}panjolska} }




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