不锈钢电化学着黑色工艺与成膜机理研究.pdf

22 2 腐蚀科学与防护技术 Vo.l 22 No. 2 2010 3 CORROSION SCIENCE AND PROTECTION TECHNOLOGY M ar. 2010 何新快1, 2 1 , 410083; 2 , 412008 : , , , . : ; 1m ol/L H SO 35% NaC l 10% NaOH , 2 4 1130565 790 mV, ; , FeC rM n, . 2+ 2+ 3+ : 1)M e ; 2) /M e C r 2- + ; 3) 4H M oO + 2SO + 4H 2(M oO) SO + 6H O + 6[ O] M e+ [ O] = M eO 2 4 4 2 4 2 . : , , , , : TG17444 : A : 1002-6495( 20 10) 02-0104-05 P rocess and F orm ation M echanism o E lectrochem ically B lackened F ilm or Stainless Steel 1, 2 HE X in-kuai 1S chool of R esources Processing and B ioeng ineering, C entra l South University, Changsha 410083; 2S chool of M ater ials E ng ineeing and Pr inting H unan University of Technology, Zhuzhou 4 12008 Abstract: The process of black-coloring for stain less steel by electrochem icalm ethod w as studied. The effect of the bath composition and passivation process on black colored film w ere d iscussed. The corrosion resistance and anti-w ear performance of the b lacken ing film w ere investigated. The relevan tmechan ism of the processw as d iscussed in term s of the surfacemorphology, m icrostructure and chem ical composition of the blackening film. The resu lts show that the passivation is beneficial to t