Titanium Nitride Modified by Hydrothermal Treatment in Calcium Acetate Solution

2015 ◽  
Vol 815 ◽  
pp. 446-450
Author(s):  
Xing Ling Shi ◽  
Ling Li Xu ◽  
Guang Hong Zhou ◽  
Le Te Bang
Keyword(s):  
Surface Modification ◽  
Titanium Nitride ◽  
Hydrothermal Treatment ◽  
Dental Implant ◽  
Pure Titanium ◽  
Surface Hardness ◽  
Treatment Temperature ◽  
Acetate Solution ◽  
Tin Coating ◽  
Implant Coating

Dental implant made of pure titanium (Ti) has become one important option to restore the function of lost tooth. However, because of insufficient hardness, it is always scratched during oral hygieneprocedures. To improve its surface hardness,titanium nitride (TiN) coating was prepared. Soft tissue - implant interface is important for blocking bacteria invasion, therefore surface modification is necessary to improve biocompatibility of TiN for fibroblasts.In the present study, TiN coating was modified by hydrothermal treatment incalcium acetate (CaAc) solution and effect of hydrothermal treatment temperature was studied. After treatment,calcium (Ca) wassuccessfully combined into TiN surface and the surface morphology, roughness and hardness were not changed below 140 °C. It is expected that, surface modification with Ca by hydrothermal treatment could made TiN a promising dental implant coating.

Effects of Hydrothermal Treatment on Properties of Titanium Nitride Coating for Dental Implants

2012 ◽  
Vol 529-530 ◽  
pp. 247-250 ◽  
Author(s):  
Xing Ling Shi ◽  
Kanji Tsuru ◽  
Giichiro Kawachi ◽  
Ishikawa Kunio
Keyword(s):  
Surface Morphology ◽  
Titanium Nitride ◽  
Hydrothermal Treatment ◽  
Dental Implant ◽  
Pure Titanium ◽  
Surface Hardness ◽  
Nitride Coating ◽  
Tin Coating ◽  
Titanium Nitride Coating ◽  
Implant Coating

To improve surface hardness of dental implant made of pure titanium (Ti), titanium nitride (TiN) coating was introduced. However, studies revealed that TiN only showed osseointegration similar or inferior to that of Ti. Therefore it is necessary to improve the biocompatibility of TiN for dental implant coating. In the present study, TiN coating was prepared on pure Ti substrates and hydrothermal treatment was conducted to modify its surface properties. It was found that, TiN surface was partially oxidized after treatment and calcium (Ca) was successfully combined onto its surface. Surface morphology, roughness and hardness were not affected after treatments below 140°C and wettability was obviously improved.

scholarly journals High Temperature Wear Behavior of Titanium Nitride Coating Deposited Using High Power Impulse Magnetron Sputtering

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 555 ◽  
Author(s):  
Chin-Chiuan Kuo ◽  
Yu-Tse Lin ◽  
Adeline Chan ◽  
Jing-Tang Chang
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Magnetron Sputtering ◽  
Titanium Nitride ◽  
High Power ◽  
Wear Behavior ◽  
Surface Hardness ◽  
Film Surface ◽  
Work Piece ◽  
Tin Coating

Titanium nitride (TiN) coating has been used in various application as it gives excellent performance in many aspects. It has been proven to prolong machining tool life since the mid-1960s. Industrial deposition processes of TiN, including magnetron sputtering, arc ion plating, and chemical vapor depositions, have their individual advantages and limitations. Due to the rising demands of the dry machining technique, the massive amount of heat generated from the friction of cutting tools against the surface of a work piece has become the main issue to overcome. Oxidation of TiN, which occurs around 400 °C, puts a limit on the applications of the coatings. Comparing TiN tool coatings deposited by arc evaporation, the novel high-power impulse magnetron sputtering (HiPIMS) technology provides smoother film surface, denser structure and subsequent corrosion resistance. Therefore, this research aims to investigate the wear behavior of TiN thin film deposited by HiPIMS at high temperature. The influences of the coating properties on the wear resistance of coatings at high temperature are also investigated. The results show that the HiPIMS technique enables a denser epitaxial-grown TiN coating with higher surface hardness and adhesion in contrast with TiN coating deposited using direct current (DC) magnetron sputtering techniques, which provides a higher wear resistance.

Titanium Nitride Film on Titanium Film by Magnetron Sputtering Method

2018 ◽  
Vol 782 ◽  
pp. 176-181
Author(s):  
Akira Watazu ◽  
Kay Teraoka ◽  
Tsutomu Sonoda
Keyword(s):  
Magnetron Sputtering ◽  
Titanium Nitride ◽  
Blood Compatibility ◽  
Pure Titanium ◽  
Titanium Substrate ◽  
Nitride Film ◽  
Tin Coating ◽  
Titanium Film ◽  
Gas Atmosphere ◽  
Ar Gas

Titanium nitride (TiN) film on titanium film (Ti) was formed by magnetron sputtering method. Pure titanium substrates with TiN/Ti multi-layered films deposited using DC sputter-deposition machine in Ar gas atmosphere, in order to improve not only the blood compatibility of pure titanium but also the adhesion between the deposited TiN coating and the pure titanium substrate. The effects of the thickness of a pure titanium interlayer on adhesion of the TiN coating to the pure titanium substrate were investigated. And the effects of the TiN coating obtained in this study on blood compatibility were also investigated. The obtained multi-layered films looked yellow gold and appeared to be uniform and adhesive without any peel-offs. Based on the results of the platelet test, the ratio of the number of adhered platelets for the TiN/Ti film to that for the pure titanium substrate was estimated to be 0.54. Thus it was found that the platelet adhesion of the obtained TiN/Ti film was much smaller than the pure titanium, concluding that the TiN coating improved the blood compatibility.

HARDNESS AND ELASTIC MODULUS OF TITANIUM NITRIDE COATINGS PREPARED BY PIRAC METHOD

2018 ◽  
Vol 25 (01) ◽  
pp. 1850040 ◽  
Author(s):  
SIYUAN WU ◽  
SHOUJUN WU ◽  
GUOYUN ZHANG ◽  
WEIGUO ZHANG
Keyword(s):  
Elastic Modulus ◽  
Titanium Nitride ◽  
Physical Vapor Deposition ◽  
Surface Hardness ◽  
Hardness Distribution ◽  
Pvd Coatings ◽  
Tin Coating ◽  
Distribution Profile ◽  
Pvd Coating ◽  
Nitride Coatings

In the present work, hardness and elastic modulus of a titanium nitride coatings prepared on Ti6Al4V by powder immersion reaction-assisted coating (PIRAC) are tested and comparatively studied with a physical vapor deposition (PVD) TiN coating. Surface hardness of the PIRAC coatings is about 11[Formula: see text]GPa, much lower than that of PVD coating of 22[Formula: see text]GPa. The hardness distribution profile from surface to substrate of the PVD coatings is steeply decreased from [Formula: see text]22[Formula: see text]GPa to [Formula: see text]4.5[Formula: see text]GPa of the Ti6Al4V substrate. The PIRAC coatings show a gradually decreasing hardness distribution profile. Elastic modulus of the PVD coating is about 426[Formula: see text]GPa. The PIRAC coatings show adjustable elastic modulus. Elastic modulus of the PIRAC coatings prepared at 750[Formula: see text]C for 24[Formula: see text]h and that at 800[Formula: see text]C for 8[Formula: see text]h is about 234 and 293[Formula: see text]GPa, respectively.

scholarly journals Mechanical Properties and Frictional Wear Characteristic of Pure Titanium Treated by Atmospheric Oxidation

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3196
Author(s):  
Tong Chen ◽  
Shinji Koyama ◽  
Shinichi Nishida ◽  
Lihua Yu
Keyword(s):  
High Surface ◽  
Pure Titanium ◽  
Surface Hardness ◽  
Treatment Temperature ◽  
Atmospheric Oxidation ◽  
Wear Testing ◽  
Research Report ◽  
Processing Temperature ◽  
Wear Depth ◽  
Scratch Testing

Pure titanium was treated by atmospheric oxidation, and the effect of the treatment temperature on its performance was studied. X-ray diffraction, scanning electron microscopy, wear testing, and scratch testing were used to evaluate the performance of the treated specimens. In order to evaluate the difficulty of compound formation during the different processing temperatures, Gibbs free energy was calculated. The experimental results show that the surface hardness of the sample can be improved at a certain oxidation treatment temperature. When the processing temperature is 850 °C, the surface hardness reaches the maximum value. The results of the scratch testing show that the hardened layer produced at this processing temperature has excellent peeling resistance. In addition, the wear depth and wear width are also at their minimum values at this processing temperature. Since the specimen treated at a processing temperature of 850 °C provides sufficiently high surface hardness and wear resistance in this research report, it is considered to be the optimal condition during practical application.

scholarly journals Titanium-Nitride Coating of Orthopaedic Implants: A Review of the Literature

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ruud P. van Hove ◽  
Inger N. Sierevelt ◽  
Barend J. van Royen ◽  
Peter A. Nolte
Keyword(s):  
Titanium Nitride ◽  
Polyethylene Wear ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Coating Process ◽  
Orthopaedic Implant ◽  
Cohesive Failure ◽  
Orthopaedic Implants ◽  
Tin Coating ◽  
Titanium Nitride Coating ◽  
English Medical Literature

Surfaces of medical implants can be enhanced with the favorable properties of titanium-nitride (TiN). In a review of English medical literature, the effects of TiN-coating on orthopaedic implant material in preclinical studies were identified and the influence of these effects on the clinical outcome of TiN-coated orthopaedic implants was explored. The TiN-coating has a positive effect on the biocompatibility and tribological properties of implant surfaces; however, there are several reports of third body wear due to delamination, increased ultrahigh molecular weight polyethylene wear, and cohesive failure of the TiN-coating. This might be due to the coating process. The TiN-coating process should be optimized and standardized for titanium alloy articulating surfaces. The clinical benefit of TiN-coating of CoCrMo knee implant surfaces should be further investigated.

scholarly journals Preparation of Oil Palm Empty Fruit Bunch Hydrolysate

Fermentation ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 81
Author(s):  
Hironaga Akita ◽  
Mohd Zulkhairi Mohd Yusoff ◽  
Shinji Fujimoto
Keyword(s):  
Hydrothermal Treatment ◽  
Palm Oil ◽  
Oil Palm ◽  
High Performance ◽  
Production Efficiency ◽  
Solid Phase ◽  
Waste Product ◽  
Treatment Temperature ◽  
Empty Fruit Bunch ◽  
Glucose Content

Malaysia is the second largest palm oil producer and exporter globally. When crude palm oil is produced in both plantations and oil processing mills, a large amount of oil palm empty fruit bunch (OPEFB) is simultaneously produced as a waste product. Here, we describe the preparation of hydrolysate from OPEFB. After OPEFB was hydrothermally treated at 180–200 °C, the resultant liquid phase was subjected to high-performance liquid chromatography analysis, while the solid phase was used for acidic and enzymatic hydrolysis. Hemicellulose yield from the acid-treated solid phase decreased from 153 mg/g-OPEFB to 27.5 mg/g-OPEFB by increasing the hydrothermal treatment temperature from 180 to 200 °C. Glucose yield from the enzyme-treated solid phase obtained after hydrothermal treatment at 200 °C was the highest (234 ± 1.90 mg/g-OPEFB, 61.7% production efficiency). In contrast, xylose, mannose, galactose, and arabinose yields in the hydrolysate prepared from the solid phase hydrothermally treated at 200 °C were the lowest. Thus, we concluded that the optimum temperature for hydrothermal pretreatment was 200 °C, which was caused by the low hemicellulose yield. Based on these results, we have established an effective method for preparing OPEFB hydrolysates with high glucose content.

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