Acta Metallurgica Sinica (English Letters) ›› 1989, Vol. 2 ›› Issue (12): 437-440.

• Research paper • Previous Articles     Next Articles

ELECTRON ENERGY SPECTRUM ANALYSIS ON PASSIVE FILM OF Si-BEARING STAINLESS STEELS

FENG Xiuying QIN Zirui LI Longsheng Dalian University of Technology,Dalian,ChinaSHENG Shishan Dalian Institute of Chemical Physics,Academia Sinica,Dalain,ChinaLIU Dejing Dalian Anti-acid Pump Factory,Dalain,China   

  • Received:1989-12-11 Revised:1989-12-11 Online:1989-12-11 Published:2009-10-10

Abstract: The surface films on the Si-bearing stainless steels formed after soaking in the concentrated nitric acid for 216 h have been investigated by means of an electron energy spectrometer.It can he reached that Si builds up in the surface in the form of SiO_2.It plays a main part as a passivating element in the Si-bearing stainless steels in strong oxidizing medium,whereas Cr drops down to the second place.

Key words: Si-bearing stainless steel, passive film