Complex material and surface analysis of anterolateral distal tibial plate of 1.4441 steel
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00843989%3A_____%2F22%3AE0109448" target="_blank" >RIV/00843989:_____/22:E0109448 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989100:27230/21:10249114 RIV/61989100:27360/21:10249114 RIV/61989100:27690/21:10249114 RIV/61988987:17110/22:A2302FLU
Výsledek na webu
<a href="https://www.mdpi.com/2075-4701/12/1/60" target="_blank" >https://www.mdpi.com/2075-4701/12/1/60</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/met12010060" target="_blank" >10.3390/met12010060</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Complex material and surface analysis of anterolateral distal tibial plate of 1.4441 steel
Popis výsledku v původním jazyce
Nickel-based austenitic stainless steels are still common for manufacture of implants intended for acute hard tissue reinforcement or stabilization, but the risk of negative reactions due to soluble nickel-rich corrosion products must be considered seriously. Corrosion processes may even be accelerated by the evolution of microstructure caused by excessive heat during machining, etc. Therefore, this study also deals with the investigation of microstructure and microhardness changes near the threaded holes of the anterolateral distal tibial plate containing approx. 14wt.% Ni by composition. There were only insignificant changes of microhardness, grain size, or microstructure orientation found close to the area of machining. In addition, wettability measurements of surface energy demonstrated only minor differences for bulk material and areas close to machining. The cyclic potentiodynamic polarization tests were performed in isotonic physiological solution. The first cycle was used for the determination of corrosion characteristics of the implant after chemical passivation, the second cycle was used to simulate real material behavior under the condition of previous surface damage by excessive pitting corrosion occurring during previous polarization. It was found that the damaged and spontaneously repassived surface showed a three-time higher standard corrosion rate than the “as received” chemically passivated surface. One may conclude that previous surface damage may decrease the lifetime of the implant significantly and increase the amount of nickel-based corrosion products distributed into surrounding tissues.
Název v anglickém jazyce
Complex material and surface analysis of anterolateral distal tibial plate of 1.4441 steel
Popis výsledku anglicky
Nickel-based austenitic stainless steels are still common for manufacture of implants intended for acute hard tissue reinforcement or stabilization, but the risk of negative reactions due to soluble nickel-rich corrosion products must be considered seriously. Corrosion processes may even be accelerated by the evolution of microstructure caused by excessive heat during machining, etc. Therefore, this study also deals with the investigation of microstructure and microhardness changes near the threaded holes of the anterolateral distal tibial plate containing approx. 14wt.% Ni by composition. There were only insignificant changes of microhardness, grain size, or microstructure orientation found close to the area of machining. In addition, wettability measurements of surface energy demonstrated only minor differences for bulk material and areas close to machining. The cyclic potentiodynamic polarization tests were performed in isotonic physiological solution. The first cycle was used for the determination of corrosion characteristics of the implant after chemical passivation, the second cycle was used to simulate real material behavior under the condition of previous surface damage by excessive pitting corrosion occurring during previous polarization. It was found that the damaged and spontaneously repassived surface showed a three-time higher standard corrosion rate than the “as received” chemically passivated surface. One may conclude that previous surface damage may decrease the lifetime of the implant significantly and increase the amount of nickel-based corrosion products distributed into surrounding tissues.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
30404 - Biomaterials (as related to medical implants, devices, sensors)
Návaznosti výsledku
Projekt
<a href="/cs/project/EF17_049%2F0008441" target="_blank" >EF17_049/0008441: Inovativní léčebné metody pohybového aparátu v úrazové chirurgii</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Metals
ISSN
2075-4701
e-ISSN
—
Svazek periodika
12
Číslo periodika v rámci svazku
article 60
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
14
Strana od-do
1-14
Kód UT WoS článku
000747770300001
EID výsledku v databázi Scopus
2-s2.0-85121754066