Surface Modification of Vacuum Plasma Sprayed Titanium Coating via Two Different Treatments

2007 ◽  
Vol 330-332 ◽  
pp. 533-536 ◽  
Author(s):  
Yi Kai Chen ◽  
Xue Bin Zheng ◽  
H. Ji ◽  
Chuan Xian Ding ◽  
S.W. Lee
Keyword(s):  
Aqueous Solution ◽  
Surface Modification ◽  
Body Fluid ◽  
Solution Treatment ◽  
Titanium Coating ◽  
Vacuum Plasma ◽  
Naoh Solution ◽  
Plasma Sprayed ◽  
Fluid Test ◽  
Better Than

Vacuum plasma sprayed (VPS) Ti coatings were deposited and their surface modification processes were performed by NaOH solution treatment and alkali-heat-calcification respectively. The simulated body fluid test indicated that apatite was formed on the surfaces of Ti coatings. A net-like structure was observed on the surfaces of Ti coatings treated by alkali-heat-calcification, whose bioactivity is much better than that treated by NaOH aqueous solution simply.

Study on Silver-Containing HA Coatings Prepared by Vacuum Plasma Spraying

2007 ◽  
Vol 544-545 ◽  
pp. 841-844 ◽  
Author(s):  
Xue Bin Zheng ◽  
Yi Zeng ◽  
Chuan Xian Ding ◽  
Soo Wohn Lee ◽  
Zi Yuan Zhu ◽  
...  
Keyword(s):  
Body Fluid ◽  
Zirconium Phosphate ◽  
Antibacterial Effect ◽  
Titanium Substrate ◽  
Fusobacterium Nucleatum ◽  
Antibacterial Effects ◽  
Vacuum Plasma Spraying ◽  
Vacuum Plasma ◽  
Ha Coating ◽  
Plasma Sprayed

Vacuum plasma sprayed (VPS) hydroxyapatite (HA) coatings with silver-loaded zirconium phosphate antimicrobial have been prepared on titanium substrate. Antibacterial effects of the coatings were studied by bacteria culturing using Porphyromonas gingivalis (Pg), Fusobacterium nucleatum (Fn) and Actinobacillus actinomycetemcomitans (Aa) as microorganisms. Simulated body fluid (SBF) test was carried out to evaluate the bioactivity of the coatings as well. The results obtained showed that the coatings exhibited a marked antibacterial effect against Pg, Fn and Aa when the content of antimicrobial was equal to or more than 5%. The antibacterial capability of the coatings decreased in the following order: Pg, Fn, Aa. Bone-like apatite layer was formed on the silver-containing HA coatings after immersed in SBF, suggesting that their bioactivities were not affected obviously by the addition of silver-zirconium phosphate antimicrobial. This study indicated that silver-containing VPS HA coating is a prospective candidate as dental material.

Preparation, Corrosion and Cytocompatability In Vitro of Fluoride-Coated Mg-Zn-Zr Alloy

2016 ◽  
Vol 852 ◽  
pp. 1293-1299
Author(s):  
Hao Ran Zheng ◽  
Jing Zhang ◽  
Chen You ◽  
Min Fang Chen
Keyword(s):  
Aqueous Solution ◽  
Corrosion Resistance ◽  
Body Fluid ◽  
Immersion Time ◽  
Processing Time ◽  
Corrosion Potential ◽  
Solution Treatment ◽  
Good Biocompatibility ◽  
Zr Alloy

The present investigation was carried out to optimize the hydrogen fluoride (HF) aqueous solution treatment for an Mg-2.5Zn-0.5Zr alloy, in order to improve the corrosion resistance of the material for orthopaedic applications. An MgF2 coating was formed on the surface of Mg-2.5Zn-0.5Zr alloy treated with HF solution. The effect of the HF concentration and processing time on the morphology and electrochemical performance of the MgF2 coating was systematically studied. The results showed that the MgF2 coating became thick gradually with the increase of the concentration of HF solution. However, the pinhole on the surface treated with 40% HF increased significantly. The coating thickness immersed in the same concentration of HF solution increased with immersion time, and cracks formed in the surface after four hours of immersion, resulting in a decrease in the corrosion potential. When the alloy was immersed in the HF solution with a concentration 20% at 37°C for 2h, a uniform and dense fluoride coating was formed, with a thickness of MgF2 layer of about 0.5μm. The corrosion potential of the coated Mg alloy in simulated body fluid (SBF) was 0.28V higher than the uncoated one. In addition, the fluoride-coated showed a good biocompatibility.

In Vitro Bioactivity, Cytotoxicity and Blood Compatibility of Anti-Bacterial Vacuum Plasma Sprayed Titanium Coatings

2010 ◽  
Vol 658 ◽  
pp. 511-514 ◽  
Author(s):  
Yi Kai Chen ◽  
Xue Bin Zheng ◽  
Ba Oe Li ◽  
You Tao Xie ◽  
Chuan Xian Ding
Keyword(s):  
Direct Contact ◽  
Body Fluid ◽  
Blood Compatibility ◽  
In Vitro Bioactivity ◽  
Vacuum Plasma ◽  
Titanium Coatings ◽  
Good Biocompatibility ◽  
Plasma Sprayed ◽  
Direct Contact Test

Biomaterials with good biocompatibility and anti-bacterial property were becoming attractive to researchers, so we used the chemical method to produce anti-bacterial vacuum plasma sprayed titanium coatings and studied In vitro bioactivity, cytotoxicity and blood compatibility of the anti-bacterial coatings in this paper. In order to evaluate the bioactivity of the treated titanium coatings, the coatings were immersed in simulated body fluid (SBF). The treated titanium coatings showed good bioactivity in this experiment. Two different methods were used to assess the cytocompatibility of the treated titanium coatings. One was extract test; the other was direct contact test. The results indicated that cells spread and adhered well on the coatings. The blood compatibility of the coatings was evaluated by haemolysis ratios. The hemolysis ratios of the coatings were below 2%, indicating of nonhemolysis for the coatings.

Apatite-Forming Ability Governing Bone-Bonding of Ti-15Zr-4Nb-4Ta Alloy Subjected to Calcium Solution Treatment

2011 ◽  
Vol 493-494 ◽  
pp. 920-925
Author(s):  
Seiji Yamaguchi ◽  
Hiroaki Takadama ◽  
Tomiharu Matsushita ◽  
Akinobu Fukuda ◽  
Takashi Nakamura ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Bonding Strength ◽  
Body Fluid ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Human Blood Plasma ◽  
High Mechanical Strength ◽  
Ion Concentrations ◽  
Living Bone ◽  
Naoh Solution

Ti-15Zr-4Nb-4Ta alloy is an attractive metal for orthopaedic implants, since it is free from cytotoxic elements and shows high mechanical strength. It was recently shown by an animal experiment [1] that this alloy tightly bonds to living bone, when it was subjected to 5 M NaOH solution and 100 mM CaCl2 solution treatments, heat treatment at 600 or 700 °C, and final water treatment at 80 °C. The bonding strength was increased markedly when the heat treatment temperature was increased from 600 to 700 °C. This increase of the bonding strength was attributed to the increase in apatite-forming ability of the treated alloy in a simulated body fluid (SBF) [2] with ion concentrations nearly equal to human blood plasma, although its reason was not revealed yet.

scholarly journals Enhancement of the bone-implant interface by applying a plasma-sprayed titanium coating on nanohydroxyapatite/polyamide66 implants in a rabbit model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Weiyang Zhong ◽  
Jianxiao Li ◽  
Chenbo Hu ◽  
Zhengxue Quan ◽  
Dianming Jiang
Keyword(s):  
Rabbit Model ◽  
Titanium Coating ◽  
Test Results ◽  
Bone Implant ◽  
Long Term Follow Up ◽  
Solid Fusion ◽  
Plasma Sprayed ◽  
Better Than

AbstractSolid fusion at the bone-implant interface (BII) is considered one of the indicators of a satisfactory clinical outcome for spine surgery. Although the mechanical and physical properties of nanohydroxyapatite/polyamide66 (n-HA/PA66) offers many advantages, the results of long-term follow-up for BIIs remain limited. This study aimed to improve the BII of n-HA/PA66 by applying plasma-sprayed titanium (PST) and assessing the mechanical and histological properties. After the PST coating was applied to n-HA/PA66 implants, the coating had uneven, porous surfaces. The compression results were not significantly different between the two groups. The micro-CT results demonstrated that at 6 weeks and 12 weeks, the bone volume (BV), BV/tissue volume (TV) and trabecular number (Tb.N) values of the n-HA/PA66-PST group were significantly higher than those of the n-HA/PA66 group. The results of undecalcified bone slicing showed that more new bone appeared to form around n-HA/PA66-PST implant than around n-HA/PA66 implant. The bone-implant contact (BIC) and push-out test results of the n-HA/PA66-PST group were better than those of the n-HA/PA66 group. In conclusion, after PST coating, direct and additional new bone-to-implant bonding could be achieved, improving the BII of n-HA/PA66 implants. The n-HA/PA66-PST implants could be promising for repair purposes.

Phase evolution of hydroxapatite coatings suspension plasma sprayed using variable parameters in simulated body fluid

2010 ◽  
Vol 204 (8) ◽  
pp. 1236-1246 ◽  
Author(s):  
Romain d'Haese ◽  
Lech Pawlowski ◽  
Muriel Bigan ◽  
Roman Jaworski ◽  
Marc Martel
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Phase Evolution ◽  
Variable Parameters ◽  
Plasma Sprayed

Vacuum-plasma-sprayed silicon coatings for biomedical application

2008 ◽  
Vol 28 (7) ◽  
pp. 1132-1137 ◽  
Author(s):  
Yaran Niu ◽  
Xuanyong Liu ◽  
Chuanxian Ding
Keyword(s):  
Biomedical Application ◽  
Vacuum Plasma ◽  
Plasma Sprayed
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