Use Solid Electrolytes Realize Cathodic Protection Technic's Study And Use It On Special Pipelines

Cathodic protection has been applied as one of the most important anti-corrosiontechnologies for near upon one hundred and seventy years .But it is limited in these situationsthat the electrolytes have continuous phases, such as seawater and soil. To the facilitiesexposed in the atmospheric environment or the parts of components above water line, thecorrosive surroundings consist of disconnected solution film which has high impedancescattering on the metallic surface. So the traditional cathodic is powerless,Because of appliedcathodic current can not approach to the total surface.The paper contrived a solid electrolytic coating ,Which have the function of ion conduct. Letit even painting the surface of protected metal. And on which painting an anode coatings,thenseparable the positive pole of plugs and anode coatings, the negative pole and protected metal, Theapplied cathodic current can approach to the total surface. So the anti-corrosion coating bysolid electrolyte protection be realized.Be popularly know as use solid electrolyte realizecathodic protection technic or gas cathodic protection technic. The paper base on experiments to optimize the formulas and technique of the solidelectrolytic coating. The paper mainly studied a kind of conductive coating. The conductive coating is used asthe auxiliary anode in the use solid electrolyte realize cathodic protection. The graphite is theconductive material;and the alkyd and acrylate are the film-formers. And the influences ofconductive capability are discussed in this paper, such as the amount of graphite , the andthickness of coating. The paper gives the process of the conductive coating and it's influences.We determine the graphite as the reference electrode in the system that the protectedmetal is cathode and the coating with graphite is anode. We also determine the feasibility ofgraphite as reference eletrode by a series of test. We combine the reference electrode andanode for the need of structure's simplify and convenience in constructing. And theparameters of gaseous phase cathodic protection must be determined by a series ofexperiments. The paper studying use the technology on theose special pipeline (Theose specialpipeline embrace the pipeline which crosses river, railroad and highway or some building ,Theosepipeline must be installed protect empire tube outwards, Because it,s screening action so thetraditional cathodic is powerless).through a great deal of experiments and analysis we find it isfeasible and it settles the problem of un-uniformed protection current thoroughly.In this article we make a comparison with other methods in details. At last, we give someadvices in the designing of cathodic protection for those special pipelines...