Vol.18 粱成浩等：铜基形状记忆合金在人工体液中的腐蚀行为 ·5· 5功能材料及其应用手册.北京：机械工业出版社，1991 6 Revie R W,Uhling HH.Corrosion Science,1972,12:669 Research on the Corrosion Behaviour of Cu-Based Shape Memory Alloy in Physiological Saline Solutions Liang Chenghao Yang Dazhi Dalian University of Technology ABSTRACT The corrosion behaviour of CuZnAl shape memory alloy in physiological saline solutions has been investigated with immersion test and electrochemical measure- ment techniques.The results showed that the corrosion form of shape memory alloy was dezincification mechanism.The corrosion resistance of CuZnAl shape memory alloy was such better than annealed CuZnal alloy.It is mainly related with the martensite phase which has the effects of shape memory and superelasticity improved electochemical behaviour in surface of alloy and increased passivation ability.Thus supressed anodic active dissolution. KEY WORDS Cu-based shape memory alloy,physiological saline solution, dezincification,corrosion resistanceV o ! . 1 8 梁成浩等 : 铜基形状记忆合金在人 工体 液中的腐蚀行 为 5 功能材料 及其应用 手册 . 北京: 机械工 业 出版社 , 19 91 6 eR v i e R W , U h l in g H H . C o mr s i o n S e i e n e e , 1 9 7 2 , 1 2 : 6 6 9 R e s e ar c h o n t h e C o r o s i o n B e h a v i o u r o f C u 一 B a s e d S h ap e M e m o ry A ll o y i n P h y s i o l o g i e a l S a li n e S o l u t i o n s L i a n g hC e n g h a o aY n g D a z h i D a lian U n i v e rs ity o f T e c hn o l o gy A B S T R A C T T h e e o r o s i o n b e h a v i o u r o f C uz n A I s h a P e m e m o ry a ll o y in P h y s i o l o g i e a l s a lin e s o l u t i o n s h a s b e e n i n v e s t i g a t e d w i ht im m e r s i o n t e s t an d e l e e tr o e h e m i e a l m e a s u r e - m e n t te e hn i q u e s . T h e r e s u lt s s h o w e d ht a t ht e e o r o s i o n of rm o f s h a P e m e m o ry a ll o y w a s d e z i n e iif e a t i o n m e e h a n i s m . T h e e o r o s i o n r e s i s t a n e e o f C u Z l l A I s h ap e m e m o ry a ll o y w a s s u e h b e t e r t h a n a n n e a l e d C u Z n A I a ll o y . It 1 5 m a i n ly r e l a t e d w ith t h e m art e n s i t e P h as e w h i e h h a s ht e e fe e ts o f s h a P e m e m o ry an d s u P e r e l a s t i e ity irn P r o v e d e l e e t o e h e m i e a l b e h a v i o u r in s u r af e e o f a ll o y an d i n e r e a s e d P a s s i v a t i o n a b ility . T h u s s u P r e s s e d a n o d i e a e t i v e d i s s o l u t i o n . K E Y W O R D S C u 一 b a s e d s h a P e m e m o ry a ll o y , P h y s i o l o g i e a l s a lin e s o l u t i o n , d e z i n e iif c a t i o n , e o r o s i o n r e s i s ta n e e