·72· 北京科技大学学报 1996年 4 Bruckman A.Corrosion Sci,1967,7:51 5 Dravnieks A,Medonald H.J Electrochem Soc,1948,94:139 6 Birchenall C.Corrosion Sci,1957,13:677 Sulfidation Kinetics of Fe25Cr20Ni in H,S-H,Atmosphere Zhou Chungen Xu Huibing Gong Shengkai)Wang Zhenhui) Huang Zhenzhong?)Zhu Rizhang?)He Yedong?) 1)University of Aeronautics and Astronautics Beijing 2)University of Science and Technology Beijing ABSTRACT The sulfidation kinetics of Fe25Cr20Ni were carried out at H,S-H,atmo- spheres by means of continuously-weighing device and non-continuously weighing device.Sulfidation kinetics curves of the alloy obeys parabolic law.The composition and morphology of sulfide scales were also studied.All sulfide scales consist of two surface layers in addition to subscale.Two surface layers are controlled by predominant diffusion of metals.The subscale growth is controlled by the inward diffusion of suffur. KEY WORDS kinetics sulfidation,H,S,corrosion,diffusion7 2 年19 9 6 4 B u r e k n l a n A 5 D ra v n i e k s A , 6 B 甘 c h e n a l l C . 北 京 科 技 大 学 学 报 C o r o s i o n S e i , 1 9 6 7 , 7 : 5 1 M e d o n a ld H . J E l e e otr e h e m S o e , 19 4 8 , 9 4 : 1 3 9 C o r o s i o n S c i , 1 9 5 7 , 1 3 : 6 7 7 S u l if d a ti o n K i n e t i c s o f F e 2 5 C r 2 0N i i n H , S 一 H , A t m o s D h e r e 乙 ` 二 hZ o u hC u n 岁 n ’ ) Xu uH i b i n g ` ) G o n g 肋 e n g k a i , ) 环)公n g hZ e n h u i l ) uH a n g hZ e n z h o n g Z ) hZ u Ri z h a n g Z ) 价 eY 由 n g Z ) l ) U n i v e r s i yt o f A e r o n a u ti e s a n d A s t or n a u t i e s B e ij i n g Z ) U n i v e r s iyt o f S e i e n e e an d T e e hn o l o gy B e ij in g A B S T R A C T T h e s u lif d a t i o n k i n e t i c s o f F e 2 5 C r Zo N I w e r e c a r i e d o u t a t H Z S 一 H Z a t m o - s Ph e r e s b y m e a n s o f c o n t i n u o u s l y 一 w e i g h i n g d e v i e e a n d n o n 一 e o n t i n u o u s ly w e i g h i n g d e v i e e . S u l if d a t i o n k i n e t i e s e u vr e s o f th e a ll o y o b e y s P a r a b o li e l a w . T h e e o m P o s i t i o n an d m o pr h o l o g y o f s u lif d e s e a l e s w e r e a l s o s ut d i e d . A ll s u lif d e s e a l e s e o n s i s t o f wt o s u r fa e e l a y e r s i n a d d i t i o n t o s u b s e a l e . T w o s u far e e l a y e r s ar e e o n t r o ll e d b y P r e d o m i n a n t d i fu s i o n o f m e t a l s . T h e s u b s e a l e g r o w th 1 5 e o n tr o l l e d b y th e i n w a r d d i助 s i o n o f s u 伪 r . K E Y W O R D S k i n e t i c s s u lif d a t i o n , H Z s , e o r o s i o n , d i fo s i o n