Study on the Surface Modification of Nanostructured Ti Alloys and Coarse-Grained Ti Alloys
Authors: Lin, H.K., Cheng, Y.H., Li, G.Y., Chen, Y.C., Bazarnik, P., Muzy, J., Huang, Y. and Langdon, T.G.
Journal: Metals
Volume: 12
Issue: 6
eISSN: 2075-4701
DOI: 10.3390/met12060948
Abstract:Commercial purity titanium (CP-Ti) and a Ti-6Al-4V alloy (Ti64) were processed by highpressure torsion (HPT) for 10 and 20 turns. The HPT processing produced a nanostructured microstructure and a significant strength enhancement in the CP-Ti and Ti64 samples. After 20 turns, the samples of HPT-processed CP-Ti and Ti64 were subjected to laser surface treatments in an air atmosphere using different scanning speeds and laser powers. The surface roughness of the lasermodified samples increased with increasing laser power and this produced hydrophilicity due to a lower contact angle. After a holding time of 27 days, these samples underwent a hydrophilicto-hydrophobic transformation as the contact angle increased from 13◦ to as much as 120◦ for the CP-Ti sample, and for the Ti64 sample the contact angle increased from 10◦ to 126◦. In addition, the laser surface modification process was carried out with different atmospheres (air, vacuum and O2) on heat-treated but unstrained CP-Ti and Ti64 samples and the contact angle changed due to the surface element content. Thus, as the carbon content increased from 28% to 47% in CP-Ti in a vacuum environment, the surface contact angle increased from 22◦ to 140◦. When a laser surface modification process is conducted under oxygen-less conditions, it is concluded that the contact angle increases rapidly in order to control the hydrophobic properties of Ti and the Ti alloy.
https://eprints.bournemouth.ac.uk/37009/
Source: Scopus
Study on the Surface Modification of Nanostructured Ti Alloys and Coarse-Grained Ti Alloys
Authors: Lin, H.-K., Cheng, Y.-H., Li, G.-Y., Chen, Y.-C., Bazarnik, P., Muzy, J., Huang, Y. and Langdon, T.G.
Journal: METALS
Volume: 12
Issue: 6
eISSN: 2075-4701
DOI: 10.3390/met12060948
https://eprints.bournemouth.ac.uk/37009/
Source: Web of Science (Lite)
Study on the Surface Modification of Nanostructured Ti Alloys and Coarse-Grained Ti Alloys
Authors: Lin, H.-K., Cheng, Y.-H., Li, G.-Y., Chen, Y.-C., Bazarnik, P., Muzy, J., Huang, Y. and Langdon, T.G.
Journal: Metals
Volume: 12
Issue: 6
Pages: 948(1)-948(19)
Publisher: MDPI AG
ISSN: 2075-4701
DOI: 10.3390/met12060948
Abstract:Commercial purity titanium (CP-Ti) and a Ti-6Al-4V alloy (Ti64) were processed by high-pressure torsion (HPT) for 10 and 20 turns. The HPT processing produced a nanostructured microstructure and a significant strength enhancement in the CP-Ti and Ti64 samples. After 20 turns, the samples of HPT-processed CP-Ti and Ti64 were subjected to laser surface treatments in an air atmosphere using different scanning speeds and laser powers. The surface roughness of the laser-modified samples increased with increasing laser power and this produced hydrophilicity due to a lower contact angle. After a holding time of 27 days, these samples underwent a hydro-philic-to-hydrophobic transformation as the contact angle increased from 13° to as much as 120° for the CP-Ti sample, and for the Ti64 sample the contact angle increased from 10° to 126°. In addition, the laser surface modification process was carried out with different atmospheres (air, vacuum and O2) on heat-treated but unstrained CP-Ti and Ti64 samples and the contact angle changed due to the surface element content. Thus, as the carbon content increased from 28% to 47% in CP-Ti in a vacuum environment, the surface contact angle increased from 22° to 140°. When a laser surface modification process is conducted under oxygen-less conditions, it is concluded that the contact angle increases rapidly in order to control the hydrophobic properties of Ti and the Ti alloy.
https://eprints.bournemouth.ac.uk/37009/
Source: Manual
Preferred by: Yi Huang
Study on the Surface Modification of Nanostructured Ti Alloys and Coarse-Grained Ti Alloys
Authors: Lin, H.-K., Cheng, Y.-H., Li, G.-Y., Chen, Y.-C., Bazarnik, P., Muzy, J., Huang, Y. and Langdon, T.G.
Journal: Metals
Volume: 12
Issue: 6
Publisher: MDPI AG
ISSN: 2075-4701
Abstract:Commercial purity titanium (CP-Ti) and a Ti-6Al-4V alloy (Ti64) were processed by high-pressure torsion (HPT) for 10 and 20 turns. The HPT processing produced a nanostructured microstructure and a significant strength enhancement in the CP-Ti and Ti64 samples. After 20 turns, the samples of HPT-processed CP-Ti and Ti64 were subjected to laser surface treatments in an air atmosphere using different scanning speeds and laser powers. The surface roughness of the laser-modified samples increased with increasing laser power and this produced hydrophilicity due to a lower contact angle. After a holding time of 27 days, these samples underwent a hydro-philic-to-hydrophobic transformation as the contact angle increased from 13° to as much as 120° for the CP-Ti sample, and for the Ti64 sample the contact angle increased from 10° to 126°. In addition, the laser surface modification process was carried out with different atmospheres (air, vacuum and O2) on heat-treated but unstrained CP-Ti and Ti64 samples and the contact angle changed due to the surface element content. Thus, as the carbon content increased from 28% to 47% in CP-Ti in a vacuum environment, the surface contact angle increased from 22° to 140°. When a laser surface modification process is conducted under oxygen-less conditions, it is concluded that the contact angle increases rapidly in order to control the hydrophobic properties of Ti and the Ti alloy.
https://eprints.bournemouth.ac.uk/37009/
Source: BURO EPrints