Surface modification of titanium alloy Ti6Al7Nb by high-frequency droplet impingement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00617001" target="_blank" >RIV/68081723:_____/25:00617001 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68145535:_____/25:00617001 RIV/61989100:27230/25:10259458

Výsledek na webu

<a href="https://doi.org/10.1016/j.wear.2025.205896" target="_blank" >https://doi.org/10.1016/j.wear.2025.205896</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.wear.2025.205896" target="_blank" >10.1016/j.wear.2025.205896</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface modification of titanium alloy Ti6Al7Nb by high-frequency droplet impingement

Popis výsledku v původním jazyce

Droplet erosion is commonly viewed as a negative consequence, causing damage to engineering structures. Recent research has shifted this perspective, harnessing the erosion process as a means to alter the surface properties of weld joints for stress alleviation or to modify the surface texture of biomaterials to enhance their biological potential. The practical applications of surfaces crafted through droplet erosion have been explored insufficiently, considering the research potential so far. The motivation of the present study is to compare surfaces created by the ultrasonic pulsating water jet (PWJ) technique with the surface of a grit-blasted Ti6Al7Nb femoral stem. The experiment employed two trajectory patterns (linear and interlaced perpendicular) and two different frequencies of the water droplet generation, i.e., fs = 20 and 40 kHz, promoting process diversity. The obtained erosion patterns were assessed using scanning electron microscopy observation. The textured surface characterization was conducted using areal height, hybrid, elemental, and functional roughness parameters, along with their isotropy. Findings indicate that alterations in the technological settings of the process lead to corresponding shifts in specific surface characteristics. Maintaining a roughness Sa (areal arithmetic mean height) up to 10 μm, notable changes were detected in the height parameters Sp (maximum areal peak height) being greater than Sv (maximum areal valley depth) and the surface distribution Ssk (skewness) and Sku (kurtosis). These outcomes suggest that tuning the ultrasonically modulated water jet technology parameters can fine-tune the textured surface to meet specific requirements for bioapplications. This comparative analysis demonstrates that the PWJ method can be an effective tool for active surface texturing, setting the stage for its broader practical application for medicine.

Název v anglickém jazyce

Surface modification of titanium alloy Ti6Al7Nb by high-frequency droplet impingement

Popis výsledku anglicky

Droplet erosion is commonly viewed as a negative consequence, causing damage to engineering structures. Recent research has shifted this perspective, harnessing the erosion process as a means to alter the surface properties of weld joints for stress alleviation or to modify the surface texture of biomaterials to enhance their biological potential. The practical applications of surfaces crafted through droplet erosion have been explored insufficiently, considering the research potential so far. The motivation of the present study is to compare surfaces created by the ultrasonic pulsating water jet (PWJ) technique with the surface of a grit-blasted Ti6Al7Nb femoral stem. The experiment employed two trajectory patterns (linear and interlaced perpendicular) and two different frequencies of the water droplet generation, i.e., fs = 20 and 40 kHz, promoting process diversity. The obtained erosion patterns were assessed using scanning electron microscopy observation. The textured surface characterization was conducted using areal height, hybrid, elemental, and functional roughness parameters, along with their isotropy. Findings indicate that alterations in the technological settings of the process lead to corresponding shifts in specific surface characteristics. Maintaining a roughness Sa (areal arithmetic mean height) up to 10 μm, notable changes were detected in the height parameters Sp (maximum areal peak height) being greater than Sv (maximum areal valley depth) and the surface distribution Ssk (skewness) and Sku (kurtosis). These outcomes suggest that tuning the ultrasonically modulated water jet technology parameters can fine-tune the textured surface to meet specific requirements for bioapplications. This comparative analysis demonstrates that the PWJ method can be an effective tool for active surface texturing, setting the stage for its broader practical application for medicine.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Wear

ISSN

0043-1648

e-ISSN

1873-2577

Svazek periodika

570

Číslo periodika v rámci svazku

June 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

205896

Kód UT WoS článku

001509133800005

EID výsledku v databázi Scopus

2-s2.0-85217888131