Ti复合涂层的导电性及耐蚀性能.pdf

23 4 Vol.23 No.4 2011 7 CORROSION SCIENCE AND PROTECTION TECHNOLOGY Jul. 2011 Cr/TiN/Ti  1,   1,
  2,   2 1. , 110142; 2. Æ , 110016 : 3 µm Cr/TiN/Ti . , O H 60 , 0.05 mol/L H SO +2 mg/L NaF . , 2 2 2 4 , 1000 N/cm2 12 mΩ·cm2 ; H2 , Cr/TiN/Ti , ℄. : ; ; Cr/TiN/Ti ; ;  : TG174.444 : A : 1002–6495(2011)04–0335–03 Electrical Conductivity and Corrosion Resistance of Cr/TiN/Ti Composite Films Coated on Titanium Bipolar Plate for Fuel Cell 1 1 2 2 FU Guang-yan , DAI Shi-xin , NIU Yun-song , YU Zhi-ming 1. School of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang 110142; 2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 Abstract: Cr/TiN/Ti nanocrystalline composite films of about 3 µm were deposited on titanium bipolar plates for proton exchange membrane fuel cell (PEMFC) by hollow cathode deposition (HCD) ion plating. The electrical contact resistance of Ti plate with and without the nanocrys- talline films was tested respectively, and their electrochemical corrosion performance was evaluated in 0.05 mol/L H SO +2 mg/L NaF solutions bubbled with H or O at 60 by means of po- 2 4 2 2 larization measurements. The results show that the contact resistance of the coated Ti plate was obviously lower than that of bare Ti plate, with about 12 mΩ·cm2 under a compressive p