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Pregled bibliografske jedinice broj: 631729

IMPROVEMENTS OF BIOCOMPATIBILITY OF AUSTENITIC STEEL ALLOYED WITH NITROGEN BY POTENTIODYNAMIC CYCLIZATION


Grubač, Zoran; Lajci, Nushe; Metikoš-Huković, Mirjana; Babić, Ranko
IMPROVEMENTS OF BIOCOMPATIBILITY OF AUSTENITIC STEEL ALLOYED WITH NITROGEN BY POTENTIODYNAMIC CYCLIZATION // Knjiga sažetaka, XXIII. hrvatski skup kemičara i kemijskih inženjera
Osijek, Hrvatska, 2013. str. 218-218 (poster, domaća recenzija, sažetak, znanstveni)


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Naslov
IMPROVEMENTS OF BIOCOMPATIBILITY OF AUSTENITIC STEEL ALLOYED WITH NITROGEN BY POTENTIODYNAMIC CYCLIZATION

Autori
Grubač, Zoran ; Lajci, Nushe ; Metikoš-Huković, Mirjana ; Babić, Ranko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Knjiga sažetaka, XXIII. hrvatski skup kemičara i kemijskih inženjera / - , 2013, 218-218

ISBN
978-953-6894-50-5

Skup
XXIII. hrvatski skup kemičara i kemijskih inženjera

Mjesto i datum
Osijek, Hrvatska, 21.-24.04.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
austenitic steel; biocompatibility

Sažetak
Passivation of stainless steel implants is a common procedure used to increase their biocompatibility [1]. Cyclic potentiodynamic polarization, as a surface treatment method, has been reported as an efficient method to modify the chemical and electronic properties of passive films on austenitic stainless steels [2, 3]. In the present study the passive electrode of austenitic stainless steel alloyed with nitrogen (ASS N25) was modified by the cyclic linear potentiodynamic polarization (CLPP) method in a NaNO3 solution and the effect of CLPP on the barrier and semiconducting properties of the passive film was investigated in physiological solutions using electrochemical impedance spectroscopy (EIS) measurements and Mott-Schottky (M-S) analysis. The results obtained have showed that CLPP significantly improve the pitting and general corrosion resistance of stainless steel in chloride containing solutions. A thick and compact passive oxide film with a roughness texture at a nano-scale offers up to 98% relative protection efficiency against general corrosion in physiological solutions. The conversion of the type of semiconductivity from n to p takes place in the pitting susceptible region of the passive film. Such a semiconductor p-n junction (Schottky barrier) generates a high potential barrier for electrons in the passive film, i.e., it increases the polarization resistance of the passive film.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
125-0982904-2923 - Novi materijali i katalizatori za održive tehnologije (Mirjana Metikoš-Huković, )

Ustanove
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Citiraj ovu publikaciju

Grubač, Zoran; Lajci, Nushe; Metikoš-Huković, Mirjana; Babić, Ranko
IMPROVEMENTS OF BIOCOMPATIBILITY OF AUSTENITIC STEEL ALLOYED WITH NITROGEN BY POTENTIODYNAMIC CYCLIZATION // Knjiga sažetaka, XXIII. hrvatski skup kemičara i kemijskih inženjera
Osijek, Hrvatska, 2013. str. 218-218 (poster, domaća recenzija, sažetak, znanstveni)
Grubač, Z., Lajci, N., Metikoš-Huković, M. & Babić, R. (2013) IMPROVEMENTS OF BIOCOMPATIBILITY OF AUSTENITIC STEEL ALLOYED WITH NITROGEN BY POTENTIODYNAMIC CYCLIZATION. U: Knjiga sažetaka, XXIII. hrvatski skup kemičara i kemijskih inženjera.
@article{article, year = {2013}, pages = {218-218}, keywords = {austenitic steel, biocompatibility}, isbn = {978-953-6894-50-5}, title = {IMPROVEMENTS OF BIOCOMPATIBILITY OF AUSTENITIC STEEL ALLOYED WITH NITROGEN BY POTENTIODYNAMIC CYCLIZATION}, keyword = {austenitic steel, biocompatibility}, publisherplace = {Osijek, Hrvatska} }