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1. ' ."r' ) ' .--. -..u)'' I J F L r s i o n n e r g ( 2 0 1l ) 3 0 :1 9 0 - 1 9 4 E D O I 1 0 . 1 0 0 7 / s 1 0 8 90 1 0 - 9 3 7 12 4 :' ' :, O RI G I } { A L RBS EA R C H , Effect of Nitrogen lon Implantation on Microstructure and Improvement of Titanium Corrosion Resistance A li Sh okou hy .Mahm ood G hor anev is s . Nlajid ltorghei .Mehdi Yari 'Majid M. Larijani . S. H. Haji Hosseini .Afshin Asadpour P uh lish ednlin e: Dec c m ber o 25 2010 C Springer Science+llusiness Mcdia.l-LC 2010 Abstract In the prcsent stucly the el ct of nitr.oge ion n nitrogen ion implantation has a substantialeff'ect on the inrplantationon the structure of titanir.rmsurfucc and cor- improvemcnt of titanium resistance againstcorrosion. rosion resistance have been investi_eated. this expcr.inrent In 30ke Vnitlo ge nio nbeam of I x l0r s t o5 x l0r s io n s / c m l Keywords Nitrogen ion implantation . Titanium . lluence was used. Crystalline structure of the diff-erent Corrosion resistance. Roughness samples was studicd by X-ray diflraction analysis. The roughness variations belbrc and afier implantation wer-c obselvcd by atontic force microscopy. Thc coLrusiontest Introduction w as used to comp ar e t he c or r t r s ionr - e is t r r nc c r f t i t a n i u r n s t bclore and aftcl ion irnplantation.J'he surface nrorphology The ntechanical properties of titanium make it a very ol'the sa ntp les aft c r c or r os ion t c s I was inv c s t ig a t e d b y s u i t a b l c a n d w i d e l y a p p l i c a b l e s u b s r a n c e n i n d u s t r y Il ]. i scannins electron nricloscol-ry.TI'rc results showcd that Low density. low clastic module, ultimatc tensile strength and resistanceagainst corrosion are some of its unique characteristics.Titanium compatibility with living cells makes i1 also vely attractive in medical applicationssuch as bone replacement in human body [2]. Also titaniunr A. S h o k o u h y M . C h o r a n e r iss. S. H. H. Ho sse in i propertiesare very attrirctivein structuralfusion materials Pla s n r a h v s i c sR e s e a lch n te r .Scie n ccllr d Rcsca r clt r ancn P Ce o [.]-.51.One of the eff-ectivemethod lor improvement of I s l a n r i cr \ z - a cU n i v e r sity,1 4 6 ( 1 5 7 8 ' fcl.r r .ln .Ir .a lt l 6 rnetal pnrperties is ion implantation [6, 7]. Ion-surface N4 .B o r g h c i interaction can change the surface morphology lvhich I ' h v s i c sD c p a r t r n c n t Ka r a j Br a n ch . Isla n r icAza d IJn ive r .s rtv. , cause some rnicrostructuraldel'ectsand modilies the cor.- Ka r a l . I r a n r o s i o n r e s i s t a n c el 8 ] . T h c s a m c p h e n o m e n ac a n b e se e n N{ . Y a r i tiom chemical ntodification.Ion implantation using active Dcp a r t m c n to f M a t e r i a lsEn g in ce r in g . Scie n cea n d Re se a r c h gases are not so common to produce structural changes Bra n c h .I s l a r n i cA z a d Un ive r sitl,,Ka r a j, Ir a n and do somc topographical and morphological changes and introdr"rce chcmical changcs on the surface of the M. M. Lari.jani A g r i c u l t L r r eN 4 e d i c i n c n clIn d u str ia lRe se lir ch , a sample l9-l ll. Onc advantage of ion intplantation in Sch o o j.Nu clear S c i c n c e& - f e c h n o l o g yll.cse a r ch sr itu r e( NS' lRI ) , - l l.1 lJ5 -.19|J ln regard to the corrosion prevention is that certain alloys Ka l a j . I r a n c a n b e c r e a t e d o n t h e s u r f a c c o 1 't h e b u l k . I t p r o vi d cs unique propcrties that standafd metallursical lrearmenrs A. r\saripour I )h v s i c sD e p a r t n t e n tTa ke sta nBm n ch . Isla r r ic Aza cl L In irclsrtl . , cannot affbrd | 21. Tak c s t a n .I r a n Carbon, nitrogen and oxygen are among substances usccl to lmprove the surface propertiesof titanium and titanium A. S h o k o u h y( [ ! ) a l l o y s [ 3 , l 4 ] . N i t r o g e n i m p l a n t a t i o nc a n c r c a t e a n i tr i cl c 3l- 5 3 16 1 6 K a r q , I r a n e-m a i l: a _ s h o k o u h@ya h o o .co r n y phase on titanium bulk which has special characterisries, z) )Pnnger