Cabral, U.Q.; Sathler, L.
Rio de Janeiro Univ. (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia1972
Rio de Janeiro Univ. (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia1972
AbstractAbstract
No abstract available
Original Title
Caracteristicas eletroquimicas e comportamento a corrosao em meio acido de alguns acos de baixa liga de fabricacao comercial
Primary Subject
Source
Jun 1972; 19 p
Record Type
Report
Report Number
Country of publication
LanguageLanguage
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Polarization curves for the Incoloy 800 and for the stainless stell AISI 304 were obtained with static and rotational electrodes. The electrolytes employed showed growing concentrations of mixtures as Iron, Nickel and Chromium Chlorides their proportion being the same as the content of these elements in the respective alloys. The alloys under investigation exhibited a continuous transition behaviour from the passive to the active-passive and to the active conditions. Also, the pH was found the main parameter controlling the anodic behaviour of the alloy. (Author)
[pt]
Em concentracoes crescentes de mistura de cloretos de ferro, niquel e cromo na proporcao em que estes metais estao presentes nas respectivas ligas, tracaram-se curvas de polarizacao com eletrodos estatico e rotatorio. Foi encontrada uma transicao continua de estados do tipo passivo, ativo-passivo e ativo para o comportamento das ligas nesse eletrolito. Foi constatado que o pH e o fator predominante na fixacao do comportamento anodico das ligas. (Autor)Original Title
Estudo da polarizacao do Incoloy 800 e do aco AISI 304 em mistura de cloretos de ferro, niquel e cromo
Primary Subject
Source
1985; 10 p; 12. National Seminar of Corrosion; Salvador, BA (Brazil); 13-17 May 1985
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
ALLOYS, ALUMINIUM ADDITIONS, AUSTENITIC STEELS, CARBON ADDITIONS, CHEMICAL COATING, CHEMICAL REACTIONS, CHLORIDES, CHLORINE COMPOUNDS, CHROMIUM ALLOYS, CHROMIUM COMPOUNDS, CHROMIUM-NICKEL STEELS, CORROSION PROTECTION, CORROSION RESISTANT ALLOYS, DEPOSITION, ELECTROCHEMICAL COATING, ELECTROLYSIS, HALIDES, HALOGEN COMPOUNDS, HEAT RESISTING ALLOYS, HIGH ALLOY STEELS, INCOLOY ALLOYS, IRON ALLOYS, IRON BASE ALLOYS, IRON COMPOUNDS, NICKEL ALLOYS, NICKEL COMPOUNDS, STAINLESS STEELS, STEELS, SURFACE COATING, TITANIUM ADDITIONS, TRANSITION ELEMENT COMPOUNDS
LanguageLanguage
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The chemical and electrochemical characteristics of synthetic solutions similar to those inside the occluded cell corrosion - OCC (pitting, cracks from stress corrosion) of incoloy 800, 250C are studied. (E.G.)
[pt]
Estudou-se as caracteristicas quimicas e eletroquimicas de solucoes sinteticas similares aquelas existentes no interior de cavidades de corrosao localizada (pites, fissuras de corrosao sob tensao, etc) do incoloy 800, a 250C. (E.G.)Original Title
Algumas observacoes sobre a corrosao do Incoloy 800
Primary Subject
Source
1985; 10 p; 12. National Seminar of Corrosion; Salvador, BA (Brazil); 13-17 May 1985
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
LanguageLanguage
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Corrosion atmosferica: estudio de peliculas protectoras en aceros poco aleados
Primary Subject
Secondary Subject
Source
Federacion Latinoamericana de Asociaciones Quimicas, Rio de Janeiro (Brazil); 686 p; 1984; p. 198; 16. Latin-American Congress of Chemistry; Rio de Janeiro, RJ (Brazil); 14-20 Oct 1984; Published in summary form only.
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Cabral, U.Q.; Sathler, L.; Mariano Neto, F.
Rio de Janeiro Univ. (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia1973
Rio de Janeiro Univ. (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia1973
AbstractAbstract
[en] For three austenitic stainless steels, AISI 304, 310 and 316, the pH influence on the rupture, protection and corrosion potentials was studied in a 0,5N NACl solution. The pit potentials determined by the chronogalvonometric method, are pH independent within the acid range. They showed a rough linear variation within the basic range having a maximum corresponding to the pH value of 8.8. The electrochemical hysteresis method, employed for determining the protection potential, presented a total pH independence for the AISI 316. The other steels showed a small dependence within the basic range but with a tendency for the protection potential to become slightly more active with increasing pH, within the acid range. It was also noted for the three steels studied that the corrosion potental became more active with increasing pH, within the basic range
[pt]
Foi determinado o efeito do pH sobre os valores do potencial de rutura, potencial de protecao e do potencial de corrosao em tres acos inoxidaveis austeniticos, AISI - 304 - 310 e 316, em solucao 0,5N NaCl. Os potenciais de pite, determinados pelo metodo dito 'cronogalvanometrico', independem praticamente do pH na faixa acida, variando de maneira grosseiramente linear na faixa basica e passando por um maximo para o valor correspondente ao pH 8.8. Os potenciais de protecao, determinados pelo metodo dito de 'histerese eletroquimica', sao praticamente independentes do pH para o aco AISI 316, variando pouco com o pH na faixa basica para os acos AISI 304 e 310 e tornando-se ligeiramente mais ativos para ambos a medida que cresce o pH na faixa acida. Foi ainda observado que os potenciais de corrosao tornam-se mais ativos a medida que cresce o pH na faixa basicaOriginal Title
Efeito do pH nos potenciais de pite e de protecao de acos inoxidaveis tipo AISI 304, 310 e 316 em solucao de NaCl
Primary Subject
Source
Jun 1973; 17 p; 28. Annual Congress of the Brazilian Association of Metals; Salvador, Bahia, Brazil; 24 - 30 Jun 1973
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
ALKALI METAL COMPOUNDS, ALLOYS, CARBON ADDITIONS, CHEMICAL REACTIONS, CHLORIDES, CHLORINE COMPOUNDS, CHROMIUM ALLOYS, CHROMIUM STEELS, CHROMIUM-NICKEL STEELS, CORROSION, CORROSION RESISTANT ALLOYS, HALIDES, HALOGEN COMPOUNDS, HEAT RESISTING ALLOYS, IRON ALLOYS, IRON BASE ALLOYS, MOLYBDENUM ALLOYS, NICKEL ALLOYS, SODIUM COMPOUNDS, STAINLESS STEELS, STEELS, TRANSITION ELEMENT ALLOYS
LanguageLanguage
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue