The Effect of Colored Titanium Oxides on the Color Change on the Surface of Ti-5Al-5Mo-5V-1Cr-1Fe Alloy

Peng, Wenwen; Zeng, Weidong; Yao-wu, Zhang; Shi, Chunling; Quan, Biao; Wu, Jianding

doi:10.1007/s11665-013-0573-4

Cited by 26 publications

(19 citation statements)

References 13 publications

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“…Our findings suggest that laser irradiation increased the oxide layer of the TiO 2 and TiO. TiO 3 is dark-violet while TiO 2 and TiO are respectively white-and golden-tinted [40]. However, the interpretation of the color change on titanium alloys is difficult.…”

Section: Discussionmentioning

confidence: 79%

The Effects of Erbium-Doped Yttrium Aluminum Garnet Laser (Er: YAG) Irradiation on Sandblasted and Acid-Etched (SLA) Titanium, an In Vitro Study

et al. 2020

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The treatment of peri-implantitis implies the decontamination of the surface of the fixture. This study aims to analyze the effect of the erbium-doped yttrium aluminum garnet laser (Er: YAG) on sandblasted and acid-etched (SLA) titanium. 30 titanium SLA disks were divided into three groups. In Group 1, the disks were left intact; on the contrary, both Groups 2 and 3 were irradiated with the Er: YAG laser at different settings, with a pulse duration of 300 μs and a period of 30 s. Group 2 was irradiated at 1 W and 100 mJ/pulse and Group 3 at 4 W and 400 mJ/pulse. The superficial changes at chemical, nano, and microscopical levels were detected through the use of Fourier-transform infrared spectroscopy, atomic force microscopy, and scanning electron microscope. The Kruskal–Wallis test, followed by the Dunn–Bonferroni Post Hoc analysis, detected the presence of statistically significant differences among the groups. The level of significance was p ≤ 0.05. Results showed that Er: YAG irradiation promoted a significant (p < 0.05) increase of oxides and a decrease of microscopical roughness and porosity on SLA disks. However, the protocol tested on group 3 seemed to be too aggressive for the titanium surface, as shown by the presence of micro-cracks and signs of coagulation, melting, and microfractures. In conclusion, Group 2 showed significantly minor surface alterations with respect to Group 3, and the increase of superficial oxide level, the decrease of porosity, and micro-roughness represent a positive alteration that could protect the materials against bacterial adhesion.

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Section: Discussionmentioning

confidence: 79%

The Effects of Erbium-Doped Yttrium Aluminum Garnet Laser (Er: YAG) Irradiation on Sandblasted and Acid-Etched (SLA) Titanium, an In Vitro Study

et al. 2020

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“…The color presented by the NiTi alloy after the heat treatment may be important as indicative of the characteristics and mechanical properties expected of an endodontic instrument confectioned from that alloy. In different areas, such as aerospace and naval, the color presented by an alloy after heating is used for quality control and estimation of mechanical properties [15,16]. Similarly, in endodontics, it should be possible to estimate the mechanical properties of a NiTi endodontic instrument from its color, since it is related to the heat treatment to which it was submitted.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to improving the mechanical properties, heat treatment promotes changes in the superficial layer of the NiTi alloy, leading to color changes [15]. The superficial layer is composed mainly of titanium oxide (TiO) [16]. The temperature, time and rate of heating and cooling used in the heat treatment have a direct influence on the characteristics of the titanium oxide layer, resulting in variations in color [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…The superficial layer is composed mainly of titanium oxide (TiO) [16]. The temperature, time and rate of heating and cooling used in the heat treatment have a direct influence on the characteristics of the titanium oxide layer, resulting in variations in color [15,16]. Vortex Blue (Dentsply Sirona, Ballaigues, Switzerland), Protaper Gold (Dentsply Sirona, Ballaigues, Switzerland) and Reciproc Blue (VDW, Munich, Germany) are commercially available examples of NiTi files that have different colors.…”

Section: Introductionmentioning

confidence: 99%

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Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments

Almeida

Elias

2020

RGO, Rev. Gaúch. Odontol.

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Objective The aim of this study was to evaluate and compare the effect of heat treatment at different temperatures on the color and flexibility of nickel-titanium endodontic instruments. Methods Thirty-six nickel-titanium K-file endodontic instruments were divided into six groups and submitted to heat treatment at several temperatures between 450ºC and 750ºC. The color was visually observed. Cantilever-bending tests were performed to measure the flexibility of the instruments. The data were statistically evaluated by one-way analysis of variance and Tukey post hoc comparisons. Results It was observed that the color becomes darker as the heating temperature increases. The flexibility is significantly higher after the heat treatment (P < 0.05). Instruments treated at 650ºC and 750ºC had higher flexibility than those treated at lower temperatures (450ºC, 500ºC and 550ºC) (P < 0.05). Conclusion Heat treatment has a significant effect on the surface color and flexibility of nickel-titanium endodontic instruments. The highest flexibility was observed in instruments heated at 650ºC and 750ºC.

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“…The thickness can be increased to 17 m after 15 min of heat preservation at 773 K. Small amounts of TiO 2 and TiO are generated from 373 K onwards. Apart from the oxides of silver, which can be decomposed at the brazing temperature, the decomposition temperature of other oxides is much higher than the brazing temperature 13,14,25 (Table 2). …”

Section: The Oxidation¯lms Of Sn-ag-ti Active Solder On the Surface Omentioning

confidence: 99%

WETTING BEHAVIOR IN ULTRASONIC VIBRATION-ASSISTED BRAZING OF ALUMINUM TO GRAPHITE USING Sn-Ag-Ti ACTIVE SOLDER

Liu

et al. 2015

Surf. Rev. Lett.

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In this study, Sn-Ag-Ti ternary alloy has been used as the active solder to braze pure aluminum and graphite in atmospheric conditions using ultrasonic vibration as an aid. The authors studied the formation, composition and decomposition temperature of the surface oxides of the active solder under atmospheric conditions. In addition, the wettability of Sn-5Ag-8Ti active solder on the surface of pure aluminum and graphite has also been studied. The results showed that the major components presented in the surface oxides formed on the Sn-5Ag-8Ti active solder under ambient conditions are TiO, TiO 2 , Ti 2 O 3 , Ti 3 O 5 and SnO 2 . Apart from AgO and Ag 2 O 2 , which can be decomposed at the brazing temperature (773 K), other oxides will not be decomposed. The oxide layer comprises composite oxides and it forms a compact layer with a certain thickness to enclose the melted solder, which will prevent the liquid solder from wetting the base metals at the brazing temperature. After ultrasonic vibration, the oxide layer was destroyed and the liquid solder was able to wet and spread out around the base materials. Furthermore, better wettability of the active solder was observed on the surface of graphite and pure aluminum at the brazing temperature of 773-823 K using ultrasonic waves. The ultrasonic wave acts as the dominant driving factor which promotes the wetting and spreading of the liquid solder on the surface of graphite and aluminum to achieve a stable and reliable brazed joint.

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The Effect of Colored Titanium Oxides on the Color Change on the Surface of Ti-5Al-5Mo-5V-1Cr-1Fe Alloy

Cited by 26 publications

References 13 publications

The Effects of Erbium-Doped Yttrium Aluminum Garnet Laser (Er: YAG) Irradiation on Sandblasted and Acid-Etched (SLA) Titanium, an In Vitro Study

The Effects of Erbium-Doped Yttrium Aluminum Garnet Laser (Er: YAG) Irradiation on Sandblasted and Acid-Etched (SLA) Titanium, an In Vitro Study

Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments

WETTING BEHAVIOR IN ULTRASONIC VIBRATION-ASSISTED BRAZING OF ALUMINUM TO GRAPHITE USING Sn-Ag-Ti ACTIVE SOLDER

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