{"corpus_id":93999334,"paper_sha":"7fe088242c388162494ed78d9bb92407ff85106e","doi":"10.1002/JCTB.5010110503","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":1974887528,"dblp_id":null,"acl_id":null,"title":"Corrosion of Aluminium","year":2007,"publication_date":"2007-05-04","venue":"","journal":{"name":"Journal of Chemical Technology & Biotechnology","pages":"170-180","volume":"11"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Chemistry"],"reference_count":8,"citation_count":291,"influential_citation_count":33,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"The corrosion of aluminium at room temperature has been investigated in nine decinormal solutions over the pH range 2.0–12.0. Corrosion was dependent more on the nature of the anion than on the pH of the solution. \n \n \n \nThe solubilities of hydrated and anhydrous aluminium oxide were examined and it was concluded that, except in the presence of chloride ions, corrosion was associated with the initial rate of solution of the anhydrous oxide. \n \n \n \nPotential and anodic polarisation measurements indicated that whereas the normal anodic reaction is the formation of anhydrous oxide, in the presence of chloride, bromide and iodide ions soluble aluminium salts are formed. \n \n \n \nIt is suggested that when aluminium, carrying its air-formed film, is immersed in a solution in the presence of oxygen, the film breaks down and a small corrosion current commences to flow. In the absence of chlorides, and similar ions, film repair can take place and the behaviour of the aluminium is controlled by the relative rates of film repair and film breakdown. In the presence of chlorides film repair does not occur and once corrosion has been initiated by film breakdown it proceeds apace. If initiation is suppressed, by saturating the solution with aluminium oxide, corrosion is inhibited.","claims":[{"public_id":"cl_4f69ff74377dba8b4ed3d9d809037c45","status":"active","text":"Corrosion of aluminium at room temperature depends more on the nature of the anion than on the pH of the solution.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_4f69ff74377dba8b4ed3d9d809037c45"},{"public_id":"cl_329f3da4377b1c8d3f3834e0454e4da0","status":"active","text":"Except in the presence of chloride ions, corrosion is associated with the initial rate of solution of the anhydrous oxide.","confidence":0.92,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous 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chloride, bromide and iodide ions lead to formation of soluble aluminium salts.","confidence":0.95,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_21bf2e8bc87de831254f8926731598ce"},{"public_id":"cl_fe46f57c03ad3120024148c660cdf33d","status":"active","text":"Saturating the solution with aluminium oxide inhibits corrosion by suppressing initiation.","confidence":0.9,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_fe46f57c03ad3120024148c660cdf33d"}],"concepts":[{"public_id":"co_088737d8e2f1106b8e2d8703ae30b4f2","status":"active","name":"corrosion current","description":"The electrical current associated with electrochemical corrosion of aluminium.","types":["measurement 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