Surface modifications and Nano-composite coatings to improve the bonding strength of titanium-porcelain

Guo, Litong, Chen, Xiaoyuan, Liu, Xuemei, Feng, Wei, Li, Baoe, Lin, Cheng, Tao, Xueyu and Qiang, Yinghuai (2016) Surface modifications and Nano-composite coatings to improve the bonding strength of titanium-porcelain. Materials Science and Engineering: C, 61 143-148. doi:10.1016/j.msec.2015.12.030


Author Guo, Litong
Chen, Xiaoyuan
Liu, Xuemei
Feng, Wei
Li, Baoe
Lin, Cheng
Tao, Xueyu
Qiang, Yinghuai
Title Surface modifications and Nano-composite coatings to improve the bonding strength of titanium-porcelain
Journal name Materials Science and Engineering: C   Check publisher's open access policy
ISSN 0928-4931
1873-0191
Publication date 2016-04-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.msec.2015.12.030
Open Access Status Not Open Access
Volume 61
Start page 143
End page 148
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 2500 Materials Science
3104 Condensed Matter Physics
2211 Mechanics of Materials
2210 Mechanical Engineering
Abstract Surface modifications of Ti and nano-composite coatings were employed to simultaneously improve the surface roughness, corrosion resistance and chemical bonding between porclain-Ti. The specimens were studied by field-emission scanning electron microscopy, surface roughness, differential scanning calorimetry, Fourier transform infrared spectroscopy, corrosion resistance and bonding strength tests. The SEM results showed that hybrid structures with micro-stripes, nano-pores and nano-protuberances were prepared by surface modification of Ti, which significantly enhanced the surface roughness and corrosion resistance of Ti. Porous nano-composite coatings were synthesized on Ti anodized with pre-treatment in 40% HF acid. TiO nanoparticles were added into the hybrid coating to increase the solid phase content of the sols and avoid the formation of microcracks. With the TiO content increasing from 45 wt% to 60 wt%, the quantities of the microcracks on the coating surface gradually decreased. The optimal TiO content for the nanocomposite coatings is 60 wt% in this research. Compared to the uncoated group, the bonding strength of the coated groups showed a bonding strength improvement of 23.96%. The cytotoxicity of the 4# coating group was ranked as zero, which corresponds to non-cytotoxicity.
Formatted abstract
Surface modifications of Ti and nano-composite coatings were employed to simultaneously improve the surface roughness, corrosion resistance and chemical bonding between porclain-Ti. The specimens were studied by field-emission scanning electron microscopy, surface roughness, differential scanning calorimetry, Fourier transform infrared spectroscopy, corrosion resistance and bonding strength tests. The SEM results showed that hybrid structures with micro-stripes, nano-pores and nano-protuberances were prepared by surface modification of Ti, which significantly enhanced the surface roughness and corrosion resistance of Ti. Porous nano-composite coatings were synthesized on Ti anodized with pre-treatment in 40% HF acid. TiO2 nanoparticles were added into the hybrid coating to increase the solid phase content of the sols and avoid the formation of microcracks. With the TiO2 content increasing from 45 wt% to 60 wt%, the quantities of the microcracks on the coating surface gradually decreased. The optimal TiO2 content for the nanocomposite coatings is 60 wt% in this research. Compared to the uncoated group, the bonding strength of the coated groups showed a bonding strength improvement of 23.96%. The cytotoxicity of the 4# coating group was ranked as zero, which corresponds to non-cytotoxicity.
Keyword Biomaterials
Adhesion
Surface modification
Coating
Sol-gel
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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