【Abstr act 】 The al u mi n u m al lo y s urf ace s wi t h mic ro2 a nd na no st r uct u r e s we r e f a b rica t e d by c he mical et c hi ng met ho d . Af t e r mo dif ica t io n wi t h et hyl silico ne , t he a s 2 p r ep a r e d su rf ace s sho w super 2hydrop ho bic p rop e r t ie s wi t h a wa t e r co nt act a n gl e of up t o 159°a n d sli di ng a n gl e of smal l e r t ha n 1 ° . The i ma ge s a n d el e me nt s of t he a s 2 o bt ai ne d s urf ace s we r e i nve st i ga t e d by sca n ni ng el ect ro n mic ro scop y ( S EM ) a nd X 2r a y p ho t o el ect ro n sp ect ro scop y ( XPS) , r e sp ect i vel y . Mea nw hil e , t he eff ect s of t he sol ut io n co nce nt ra t io n , r eact io n t i me a n d r el a t i ve h u mi di t y o n t he s up e r 2hydrop ho bici t y we r e i nve st i gat e d , a s wel l a s t he rel a t io n s hip bet wee n co nt act a n gl e a nd p H val ue of t he sol ut io n wa s st udie d . Mo r eo ve r , t he st a bili t y a nd co r ro sio n re si st a nce of t he sup e r 2h ydrop ho bic s urf ace s we r e al so t e st e d . The r e s ul t s s ho w t ha t t he op t i mal p r ep a r a t io n co n di t io n s a r e 1 . 0 mo l / L of et hyl silico ne sol ut io n co nce nt r at io n , 2 . 5 h of r eact io n t i me a nd 40 %～55 % of r el a t i ve h u mi di t y . A n d al l t he a s 2 p r ep a re d s up e r 2hydrop ho bic su rf ace s s ho w lo ng t i me st a bili t y a nd co r ro sio n r e si st a nce .
【K ey w ords】 s up e r 2h ydrop ho bic ; c he mical et c hi ng ; co nt act a ngl e ; st a bili t y ; co r ro sio n r e si st a nce
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