摘要:
The invention relates to a superficial treatment method by electrolysis of ferrous surfaces to enhance friction or tread and seizing resistance features, wherein said surfaces provide the electrolysis anode, the electrolysis bath comprises a sulphur species, primarily contains water and also contains a chloride salt and a nitrogen species in quantities which facilitates the sulphuration reaction of said surfaces.
摘要:
The invention relates to a superficial treatment method by electrolysis of ferrous surfaces to enhance friction or tread and seizing resistance features, wherein said surfaces provide the electrolysis anode, the electrolysis bath comprises a sulphur species, primarily contains water and also contains a chloride salt and a nitrogen species in quantities which facilitates the sulphuration reaction of said surfaces.
摘要:
The invention provides a new method for the electrochemical co-deposition of sol-gel and one or more additives selected amongst a great variety of agents such as monomers, oligomers, polymers, metals and others. The method affords continuous films of high stability and precision.
摘要:
In order to improve the adhesion of a magnetic steel sheet with no film of an inorganic material on the surface, in particular to a tension-imparted insulating film, an anodic treatment is executed in an aqueous solution of a silicate prior to forming the insulating film. Thus, a thin silicic film having a good adhesion to the insulating film is firmly formed on the surface of the surface of the steel sheet. This makes it possible to intimately and favorably form a tension-imparting insulating film on a grain oriented magnetic steel sheet to lower the iron loss of the grain oriented magnetic steel sheet. Even for an insulating film on a magnetic steel sheet which is not of the tension-imparting type, it is possible to improve the heat resistance of the film and to improve the insulating properties since the thickness of the film can be increased.
摘要:
In order to improve the adhesion of a magnetic steel sheet with no film of an inorganic material on the surface, in particular to a tension-imparted insulating film, an anodic treatment is executed in an aqueous solution of a silicate prior to forming the insulating film. Thus, a thin silicic film having a good adhesion to the insulating film is firmly formed on the surface of the surface of the steel sheet. This makes it possible to intimately and favorably form a tension-imparting insulating film on a grain oriented magnetic steel sheet to lower the iron loss of the grain oriented magnetic steel sheet. Even for an insulating film on a magnetic steel sheet which is not of the tension-imparting type, it is possible to improve the heat resistance of the film and to improve the insulating properties since the thickness of the film can be increased.
摘要:
The present invention relates to an osteointegrative interface for implantable prostheses and to a method for the treatment of the osteointegrative interface (1); the method can modify the surface of the osteoingrative interface, which is made of transition metals such as titanium, tantalum and their alloys, in order to produce so-called “biomimetic” surfaces which have innovative compositional and morphological characteristics, and is based on the use of an anodic spark deposition (ASD) anodizing technique performed firstly in a Ca-GP solution and subsequently in a Ca (OH)2 solution.
摘要:
Il s'agit d'un monomère, de formules I-III d'un polymère obtenu à partir du monomère et d'un procédé d'obtention dudit polymère. Le monomère consiste en un polyéther comportant au moins 3 motifs éther et des motifs pyrrole ou thiophène liés aux extrémités des chaînes de ce polyéther, par l'intermédiaire pour chacun de ces composés hétérocycliques, soit de leurs atomes de carbone dans les positions 3,3' de leurs hétérocycles, soit, en ce qui concerne plus particulièrement les groupes pyrrole, par l'intermédiaire de leurs atomes d'azote respectifs, les positions 2 et 2' de ces hétérocycles étant cependant libres de toutes substitutions ou tout au plus substitués par des groupes facilement éliminables (groupes de protection par exemple). Application à l'épuration et la récupération d'ions métalliques tels que l'argent radioactif.