公开(公告)号：EP1963545A1

公开(公告)日：2008-09-03

申请号：EP06847093.9

申请日：2006-12-20

申请人： ArcelorMittal France ,  Total France

发明人： DERULE, Hervé ,  RACHIELE, Lydia ,  JACQUES, Sophie ,  GENET, Nicole ,  STEINMETZ, Jean ,  ROCCA, Emmanuel

IPC分类号： C23C22/48 ,  C23C22/53 ,  C23C22/56 ,  C23C22/50 ,  C10M173/02 ,  B21D22/20

CPC分类号： C23C22/48 ,  C23C22/50 ,  C23C22/53 ,  C23C22/56

摘要： The invention relates to a method for the carboxylation conversion of a metal surface under oxidising conditions in relation to the metal, consisting in bringing the metal into contact with a hydro-organic or aqueous bath containing a mixture of organic acids. The invention is characterised in that: the organic acids comprise saturated linear carboxylic acids having between 10 and 18 carbon atoms; the mixture comprises a binary or ternary mixture of such acids; the respective proportions of said acids are such that (i) for a binary mixture x ± 5 % - y ± 5 %, wherein x and y represent the respective proportions, in molar percentages, of the two acids in a mixture with the composition of the eutectic and (ii) for a ternary mixture x ± 3 % - y ± 3 % - z ± 3 %, wherein x, y and z represent the respective proportions, in molar percentages, of the three acids in a mixture with the composition of the eutectic; and the concentration of the mixture in the bath is greater than or equal to 20 g/l.

公开(公告)号：EP1963545B1

公开(公告)日：2010-11-17

申请号：EP06847093.9

申请日：2006-12-20

申请人： ArcelorMittal France ,  TOTAL RAFFINAGE MARKETING

发明人： DERULE, Hervé ,  RACHIELE, Lydia ,  JACQUES, Sophie ,  GENET, Nicole ,  STEINMETZ, Jean ,  ROCCA, Emmanuel

IPC分类号： C23C22/48 ,  C23C22/53 ,  C23C22/56 ,  C23C22/50 ,  C10M173/02 ,  B21D22/20

CPC分类号： C23C22/48 ,  C23C22/50 ,  C23C22/53 ,  C23C22/56

摘要： The invention relates to a method for the carboxylation conversion of a metal surface under oxidising conditions in relation to the metal, consisting in bringing the metal into contact with a hydro-organic or aqueous bath containing a mixture of organic acids. The invention is characterised in that: the organic acids comprise saturated linear carboxylic acids having between 10 and 18 carbon atoms; the mixture comprises a binary or ternary mixture of such acids; the respective proportions of said acids are such that (i) for a binary mixture x ± 5 % - y ± 5 %, wherein x and y represent the respective proportions, in molar percentages, of the two acids in a mixture with the composition of the eutectic and (ii) for a ternary mixture x ± 3 % - y ± 3 % - z ± 3 %, wherein x, y and z represent the respective proportions, in molar percentages, of the three acids in a mixture with the composition of the eutectic; and the concentration of the mixture in the bath is greater than or equal to 20 g/l.