Study On Tehnologicai Procedure Of Films By AIP On Stainless Steel Bipolar Plates For Vehicle Fuel Cell

With the rapid development of human society and technology, energy conservation and environmental protection have become an important social consciousness of today’s world. It is the core of the strategy for sustainable development, which impacts on national energy policy and technology-oriented. Fuel cell (Fuel cell, FC) which is high energy conversion efficiency and non-polluting is a new energy. The proton exchange membrane fuel cell (Proton exchange membrane fuel cell, PEMFC) for its high efficiency, zero emissions, the advantages of high power density and combined with high-pressure hydrogen storage technology high to make energy dense, the auto industry believe that it can be the commanding heights of electric automotive technology. The major developed countries and the major car companies are continuing to increase the investment in fuel cell car. They plan to achieve a comprehensive breakthrough of fuel cell for its performance, life and cost to enter the stage of the fuel cell vehicle market in2015.In this thesis, the author deposits a series of C-Cr films on Stainless steel alloy by Ion Plating in huge PBAIP experimental. Evaluating the properties of interfacial contact resistance and polarization curve to elect the parameters of the best one as the best process. The corrosive current density of modified bipolar plate changes reaches10-6mA/cm2, reached a level of substituted silver plate. Based on the SEM and EDS results, we find that films and composition are uniform. Film composition of C:Cr (at%) is12:5. Then we research the consistency of films in mass production. Research the removal of the passivation layer on the stainless steel surface, the sputtering cleaning effect of glow discharge as well as the distribution of the particles in the vacuum chamber, we use the methods of pretreatment, vapor deposition, targets placed alternately and speed changing. As a result, we formulate the technological procedure of films by AIP on stainless steel bipolar plates for vehicle fuel cell.