Production of hard hydrophilic Ni-B coatings on hydrophobic Ni-Ti and Ti-6Al-4V alloys by electroless deposition
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Ferhat Bülbül
Abstract
This paper is mainly focused on the wetting state of liquid droplets on Ni-Ti and Ti-6Al-4V hierarchical structured hydrophobic surfaces in micro/nanoscale. Electroless Ni-B deposition as a surface coating treatment has recently drawn considerable attention of researchers owing to remarkable advantages when compared with other techniques such as low price, conformal ability to coat substrates, good bath stability and relatively easier plating process control. The Ni-Ti and Ti-6Al-4V substrates were plated by electroless Ni-B plating process. The coated films were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), hardness testing and static contact angle measurement. Results obtained from the analyses show that electroless Ni-B deposition may improve the hardness and wettability of the Ni-Ti and Ti-6Al-4V alloy surfaces.
Kurzfassung
Diese Studie beschäftigt sich hauptsächlich mit dem Benetzungszustand von flüssigen Tröpfchen auf hierarchisch strukturierten hydrophoben Ni-Ti- und Ti-6Al-4V-Oberflächen im Mikro/Nanobereich. Die stromlose Ni-B-Abscheidung als Oberflächenbeschichtungsbehandlung hat in jüngster Zeit erhebliche Aufmerksamkeit erweckt, und zwar auf Grund bemerkenswerter Vorteile gegenüber anderen Techniken wie der niedrige Preis, das konforme Beschichtungsvermögen von Substraten, die gute Badstabilität und die relativ einfache Beschichtungsprozesskontrolle. Die Ni-Ti- und Ti-6Al-4V-Substrate wurden durch stromloses Ni-B-Beschichtungsverfahren beschichtet. Die beschichteten Folien wurden mittels Rasterelektronenmikroskopie (REM), Röntgendiffraktometrie (XRD), Härteprüfung und statische Kontaktwinkelmessung charakterisiert. Die aus den Analysen erhaltenen Ergebnisse zeigen, dass die stromlose Ni-B-Abscheidung die Härte sowie die Benetzbarkeit der Ni-Ti- und Ti-6Al-4V-Legierungsoberflächen verbessern kann.
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© 2017, Carl Hanser Verlag, München
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Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- The principles of measurement and testing to characterize material properties
- Electrochemical behavior of alloy AgCu50 during oxidation in the presence of chlorides and benzotriazole
- Mechanical property effects of symmetrical hour glass shapes formed during double-sided TIG keyhole arc welding of AISI1040 joints
- Residual stress state in pipe cut ring specimens for fracture toughness testing
- Effect of overlap length and scarf angle on the mechanical properties of different adhesive joints subjected to tensile loads
- Effect of post-weld heat treatment on fusion boundary microstructure in dissimilar metal welds for subsea service
- Effects of abaca fiber reinforcement on the dynamic mechanical behavior of vinyl ester composites
- Experimental and theoretical study of the rubbing process of epoxy composites against steel
- Structural self-organization of titanium alloys under impulse force action
- Effect of SiC particle size on the mechanical properties of closed aluminum foams
- Comparison of different bushing applications in composite structures of the aerospace industry
- Performance monitoring of superlarge-diameter rock-socketed piles by optic fiber sensors
- Free vibration of a Timoshenko beam carrying three dimensional tip mass: Analytical solution and experimental modal testing
- Electrochemical properties of LaNi4.2Co0.4Zn0.1Al0.3 and LaNi4.3Co0.4Zn0.1Al0.2 alloys as anode materials for Ni-MH batteries
- Production of hard hydrophilic Ni-B coatings on hydrophobic Ni-Ti and Ti-6Al-4V alloys by electroless deposition