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Firstly, the plasma oxidation mechanism , steel surface corrosion mechanism was elaborated on the basis of the mechanism of oxidation of the steel surface plasmon conducted a preliminary study . Al2O3 initially selected as the main material layer formed on the surface , mainly in order to obtain the Al2O3 layer , using the sodium aluminate solution system NaAlO2, sodium silicate Na2SiO3 and sodium hexametaphosphate (NaPO3) 6 and a mixed working fluid. Secondly, the process methods are explored , respectively, through artificial passivation after plasma oxidation , plasma electrolytic deposition of composite plasma oxidation , plasma oxidation of the steel surface and a series of direct methods of research, to find a suitable surface plasmons in the steel situ oxidation ceramic coating method , and the above methods the pros and cons during the test were analyzed. Finally using scanning electron microscopy (SEM), X -ray diffraction phase structure analyzer (XRD) and potentiostat for the film 's morphology , structure and analyze corrosion test . The results showed that: the steel in the aluminum , sodium silicate , sodium hexametaphosphate solution system in the plasma oxidation , the discharge can take place and oxide film ; surface of the film by scanning electron microscopy found a discharge surface of the center micropores the \, Al, Si and P, but in the film in an XRD diffraction pattern was not found significant Al, Si, P of the diffraction peak , only the diffraction peak of Fe , through analysis, the oxide layer is a layer of amorphous membrane ; potentiostat with the specimen polarization experiments carried out , though not found in the crystal structure of the film , but can well improve the body's resistance to corrosion.
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