ࡱ> %`Ubjbj"x"xl@@$B U U U U\fUByWWWWWWWWxxxxxxx$zh|tyWWWWWyWWyoooW WWxoWxoooWW e Ub op$y0yor}lFr}or}oWWoWWWWWyyo WWWyWWWWBBB5:BBB:BBB  SVEU ILI`TE U ZAGREBU METALUR`KI FAKULTET UTJECAJ KOBALTA I NIOBIJA NA STABILNOST BETA FAZE U BIOMEDICINSKIM TITAN-KROM LEGURAMA DOKTORSKI RAD mr. sc. Ljerka Slokar  SISAK, 2010. SVEU ILI`TE U ZAGREBU METALUR`KI FAKULTET UTJECAJ KOBALTA I NIOBIJA NA STABILNOST BETA FAZE U BIOMEDICINSKIM TITAN-KROM LEGURAMA DOKTORSKI RAD Mentor: dr.sc. Tanja Matkovi, red.prof. mr.sc. Ljerka Slokar SISAK, 2010. PODACI ZA BIBLIOGRAFSKU KARTICU UDK: 669.295:620.18(043) Klju ne rije i: Ti-Cr-Co legure, Ti-Cr-Nb legure, lijevane legure, biomedicinske legure, mikrostruktura, mehani ka svojstva, toplinska obrada, otpornost prema koroziji Znanstveno podru je: tehni ke znanosti Znanstveno polje: metalurgija Institucija u kojoj je rad izraen: Sveu iliate u Zagrebu Metaluraki fakultet Mentor rada: dr.sc. Tanja Matkovi, red.prof. Broj stranica: 131 Broj slika: 58 Broj tablica: 40 Broj koriatenih bibliografskih jedinica: 89 Datum obrane: _________________ Povjerenstvo za ocjenu i obranu doktorskog rada: dr.sc. Faruk Unki, red.prof.  predsjednik Sveu iliate u Zagrebu Metaluraki fakultet dr.sc. Tanja Matkovi, red.prof.  lan Sveu iliate u Zagrebu Metaluraki fakultet dr.sc. Zdravko Schauperl, izv.prof.  lan Sveu iliate u Zagrebu Fakultet strojarstva i brodogradnje dr.sc. Borut Kosec, izv.prof.  zamjenski lan Univerza v Ljubljani Naravoslovnotehniaka fakulteta Institucija u kojoj je rad pohranjen: Sveu iliate u Zagrebu Metaluraki fakultet Sveu iliate u Zagrebu Metaluraki fakultet Izvan doktorski studij Sisak, _____________ Pristupnik: mr.sc. LjERKA SLOKAR Tema: Utjecaj kobalta i niobija na stabilnost beta faze u biomedicinskim titan-krom legurama Sadr~aj teme: Istra~ivanjem strukture i svojstava legura na bazi Ti-Cr utvren je utjecaj kobalta i niobija na stabilnost beta faze u Ti-Cr-Co i Ti-Cr-Nb legurama, te su odreeni kemijski sastavi legura koje imaju svojstva pogodna za primjenu u biomedicini. Tema je prihvaena: 16. prosinca 2008. Rad je predan: _____________ Voditelj poslijediplomskog studija: Mentor za izradu doktorskog rada: dr.sc. Robert Pezer, doc. dr.sc. Tanja Matkovi, red.prof. Pe at Fakulteta ZAHVALA Zahvaljujem mentoru dr.sc. Tanji Matkovi, red.prof. i dr.sc. Prosperu Matkoviu, red.prof. na svestranoj pomoi vezanoj uz izradu ovog rada. Zahvaljujem lanovima Povjerenstva dr.sc. Faruku Unkiu, red.prof. i dr.sc. Zdravku Schauperlu, izv.prof. na korisnim sugestijama. }elim se zahvaliti i suradnicima iz Zavoda za opu i anorgansku kemiju Prirodoslovno-matemati kog fakulteta u Zagrebu, na pomoi pri rentgenskoj analizi, te dr.sc. Jadranki Malini, red.prof. i suradnicama iz Laboratorija za fizikalnu kemiju Metalurakog fakulteta Sveu iliata u Zagrebu, na provedenim korozijskim mjerenjima. Takoer zahvaljujem dr.sc. Borutu Kosecu, izv.prof. na pomoi pri mehani kim ispitivanjim.0Xr " $ ( 6 8 : < N X ` p ܸиܯܸܤ芆zjh-}/Uh6h-}/h,h65CJaJhp5CJaJho'h^hpCJ$aJ$h45CJ$aJ$h^ho'5CJ$aJ$h^h^5CJ$aJ$h^h(5CJ$aJ$h^hp5CJ$aJ$hph#hp5CJaJhpCJaJ0.0XZ\jlnpr6 8 : < X Z \ ^ ` $dha$gdo'dhgdo'dhgdp $dha$gdp$Ldh^L`a$gdpU`      & b $dha$gdo'dhgdp $dha$gdp$ dh^ `a$gdp  & ^ ` b    T j n $ , > ƽҴҴҽҴҴҴҨޠ|tthuhp5 hp5 h6h6h6h65h6 h6hp h a5h6hp5huhp5CJ(aJ(h45CJ$aJ$h^5CJ$aJ$h^ha}5CJ$aJ$h^ho'5CJ$aJ$hphpCJaJh#hp5CJaJhp5CJaJ-        " $ \ ^   $dha$gd$L<dh^L`<a$gd6dhgdp dh`gdp $dha$gdp $dha$gdp> B P Z ^ |  ~ 0T| 6Xlptv "(*8Ndr "24ϹϾ hS5 h a5 hd%5 h465 h#JLhp hp5h/hSh ahd%h46hh6huhp5hphI%GT6v "D *,.$ hdha$gdd% $dha$gdd% $dha$gdp$Ldh^La$gdpB p2646 &,0TVbhv|2  "6L`຾௫ࣛh ahp6h& yhp6h46 hMhph ahJ9hChThp>* hp>*huh^hA: h[Y5hphd% hd%5huhp5 hp5 h) 5=.0246b68VXZ$dh`a$gdp$dh^a$gdp $dha$gdpTVX 68:<>@BDFHJL\^dhgdp $dha$gdp $dha$gdC $dha$gdp^`| !<<<<<<<<<<<<<<<<<hdh$If^hgdp $dha$gdpdhgdp$dh`a$gdp $dha$gdpv !Z!r!!!!!!!<^<f<t<v<<<<<<<<<<<<=====*=,=.=2=4=8=V=\=h;M}h Dhxhp5h +hp5CJaJhp5CJaJh3 hp5CJaJhohph& yhp6Uh ah<6h ah;M}6h ah\6h ahp6h ah a6h ah4667a, kao i dr.sc. Stjepanu Ko~uhu, doc. na pomoi pri rezanju uzoraka. Ljerka Slokar SADR}AJ PREDGOVORISA}ETAKIIISUMMARYIVKLJU NE RIJE IVKEY WORDSVPOPIS OZNAKA VIPOPIS SLIKA VIIIPOPIS TABLICAXI1. UVOD11.1. HIPOTEZA RADA22. TEORIJSKI DIO32.1. TITAN3 2.1.1. Povijest titana i njegovih legura3 2.1.2. Osnovna svojstva i kristalna struktura titana4 2.1.3. Fazne transformacije11 2.1.4. Podjela legura titana16 2.1.4.1. Komercijalni titan i legure ( tipa18 2.1.4.2. Legure (+( tipa20 2.1.4.3. Legure ( tipa23 2.1.5. Korozija titana i nekih njegovih legura262.2. POSEBNA SVOJSTVA I PRIMJENE TITANA29 2.2.1. Ostala svojstva i primjene titana i njegovih legura 29 2.2.2. Legure titana s efektom prisjetljivosti oblika30 2.2.3. Biomedicinske legure titana33 2.2.3.1. Ponaaanje biomedicinskih legura titana u korozijskim uvjetima413. EKSPERIMENTALNE METODE453.1. PRIPREMA UZORAKA453.2. ANALIZA STRUKTURE DIFRAKCIJOM RENTGENSKIH ZRAKA46 3.2.1. Odreivanje parametara elementarne elije483.3. METALOGRAFSKA ANALIZA49 3.3.1. Svjetlosna mikroskopija49 3.3.2. Kvantitativna metalografska analiza50 3.3.3. Analiza pomou skenirajueg elektronskog mikroskopa513.4. TVRDOA523.5. MODUL ELASTI NOSTI533.6. TOPLINSKA ANALIZA553.7. TOPLINSKA OBRADA563.8. KOROZIJA 574. REZULTATI I RASPRAVA594.1. REZULTATI ISPITIVANJA Ti-Cr-Co LEGURA59 4.1.1. Priprema uzoraka59 4.1.2. Analiza strukture difrakcijom rentgenskih zraka60 4.1.3. Analiza pomou skenirajueg elektronskog mikroskopa64 4.1.4. Ispitivanje tvrdoe66 4.1.5. Korozijska ispitivanja664.2. REZULTATI ISPITIVANJA Ti-Cr-Co LEGURA s 5 i 10 at.% Co 67 4.2.1. Priprema uzoraka67 4.2.2. Analiza strukture difrakcijom rentgenskih zraka68 4.2.3. Izra unavanje parametara elementarne elije72 4.2.4. Metalografska analiza73 4.2.4.1. Svjetlosna mikroskopija73 4.2.4.2. Kvantitativna metalografska analiza75 4.2.4.3. Analiza pomou skenirajueg elektronskog mikroskopa77 4.2.5. Ispitivanje tvrdoe80 4.2.6. Ispitivanje modula elasti nosti81 4.2.7. Toplinska analiza86 4.2.8. Toplinska obrada87 4.2.9. Korozijska mjerenja 924.3. REZULTATI ISPITIVANJA Ti-Cr-Nb LEGURA97 4.3.1. Priprema uzoraka97 4.3.2. Analiza strukture difrakcijom rentgenskih zraka98 4.3.3. Izra unavanje parametara elementarne elije102 4.3.4. Metalografska analiza103 4.3.4.1. Svjetlosna mikroskopija103 4.3.4.2. Kvantitativna metalografska analiza105 4.3.4.3. Analiza pomou skenirajueg elektronskog mikroskopa106 4.3.5. Ispitivanje tvrdoe108 4.3.6. Ispitivanje modula elasti nosti109 4.3.7. Toplinska analiza113 4.3.8. Toplinska obrada114 4.3.9. Korozijska mjerenja 1185. ZAKLJU AK1236. 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