Influence of surface pre-treatment with mechanical polishing, chemical, electrochemical and ion sputter etching on the surface properties, corrosion resistance and MG-63 cell colonization of commercially pure titanium

Vlcak, Petr; Fojt, Jaroslav; Drahokoupil, Jan; Březina, Vítězslav; Šepitka, Josef; Horažďovský, T.; Mikšovský, Jan; Cerny, Frantisek; Lebeda, M.; Haubner, Michal

doi:10.1016/j.msec.2020.111065

Cited by 20 publications

(10 citation statements)

References 57 publications

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“…For the Fe 57 Co 10 B 20 Si 5 Nb 4 V 4 sample, the maximum phase angle was about 60°, indicating a more nonuniform charging and discharging double layer on the surface [ 41 ]. However, the CPE values for the Fe 67 Co 10 B 12 Si 9 Nb 2 sample were about one order in magnitude higher than the Fe 62 Co 15 B 14 Si 9 and Fe 57 Co 10 B 20 Si 5 Nb 4 V 4 samples, which can be a result of increased absorption of water in defect during the corrosion process and expanded the capacitance interface [ 42 ]. R ct was correlated with the dissolution of Fe and resistance of chargé transfer at the double layer on the electrolyte/substrate interface [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of the Nb and V Addition on the Microstructure and Corrosion Resistance of the Fe-B-Co-Si Alloy

et al. 2021

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The paper presents a comparison of the results of the corrosion resistance for three Fe-B-Co-Si-based newly developed alloys with the addition of Nb and V. The corrosion performance differences and microstructure variations were systematically studied using scanning electron microscope, electric corrosion equipment, X-ray diffractometer, and differential calorimeter. It has been shown that each alloying addition increased the corrosion resistance. The highest corrosion resistance obtained by potentiodynamic polarization was found for the alloy with both Nb and V addons (Fe57Co10B20Si5Nb4V4) and lowest in the case of the basic four-element Fe62Co15B14Si9 material. This shows that the proper choice of additions is of significant influence on the final performance of the alloy and allows tailoring of the material for specific applications.

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Section: Resultsmentioning

confidence: 99%

Influence of the Nb and V Addition on the Microstructure and Corrosion Resistance of the Fe-B-Co-Si Alloy

et al. 2021

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“…Continuous measurement mode (CMX) was applied to obtain depth profiles. [ 54 ] The CMX function was expressed using a quasistatic force ( Pqstat ) in the range from 5 to 10 000 µN and the dynamic actuation force ( Pdyn ) in the range from 2 to 203.9 µN at a frequency of 85 Hz. Measurements were made at a room temperature of 24.3 °C.…”

Section: Methodsmentioning

confidence: 99%

Development of Smart Sensing Film with Nonbiofouling Properties for Potentiometric Detection of Local pH Changes Caused by Bacterial and Yeast Infections Around Orthopedic Implants

Tomšík

Gunár

Krunclová

et al. 2022

Adv Materials Inter

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of patients in need of such surgery, which can significantly improve one's quality of life. [1] Unfortunately, orthopedic implants are highly susceptible to peri-implant sterile inflammation or microbial infections (prosthetic joint infections, PJI). These complications, which manifest as pain, erythema, swelling and discharge from the wound site, require long hospitalizations and can lead to osteomyelitis, implant failure, sepsis, multiorgan dysfunction, amputation or even death. [2,3] PJI occur in 1-2% of primary arthroplasty surgeries and up to 4% of revision arthroplasty surgeries. [4] Traditionally, PJI are classified as early (<3 months after surgery), delayed (3-24 months after surgery), or late (>2 years after surgery). [5] The sources of bacterial infection might be the operating room and surgical equipment, bacteria from the patient's skin, and bacteria that already reside in the patient's body. Early and acute infections are usually preceded by a systemic infection such as sepsis or soft-tissue infection. [6] The origins of chronic infections are either exogenous or hematogenous. [7] Implant-associated infections are the result of bacterial adhesion to an implant surface and subsequent formation of biofilm at the implantation site. [8][9][10] According to the surveillance European Centre for Disease Prevention and Control report from 2017, the The local peri-implant pH changes caused by sterile inflammation and bacterial and fungal infections are studied herein. Then, a sensing electrode based on polyaniline and poly(2-methyl-2-oxazoline) on a titanium alloy support is developed for potentiometric detection of peri-implant pH changes to enable early detection of the aforementioned pathologies. The infected endoprosthesis area is shown to have an average pH of 0.79 units lower than the aseptic sample. The pH measurements of the individual pathogenic bacteria or pathogenic yeast reveal that Escherichia coli decreased the pH by 1.24 units, Staphylococcus aureus decreased the pH by 1.33 units and the methicillin-resistant Staphylococcus aureus bacteria decreased the pH from 7.2 to 5.6 during 10 h, followed by a subsequent increase to 6.4. The results are statistically significant (α = 0.01). Pseudomonas aeruginosa is not shown to change pH levels. On the other hand, the pathogenic yeast has the lowest recorded pH, which decreases from 5.8 to 4.8. This difference in pH can be used to identify the nature of the infection. The developed electrodes have a pH response between pH 5 and 8, with a Nernstian slope of −59.6/pH. The developed electrode can contribute to the next generation of biosensors.

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“…After mechanical polishing, a relatively rough surface is often obtained. In order to reduce the surface roughness, strong acid solution, such as HNO 3 , HF, sulphuric acid (H 2 SO 4 ), hydrochloric acid (HCl), and prechloric acid (HClO 4 ) are used for chemical and electrochemical polishing [3,[63][64][65][66]. Therefore, these slurries cannot be applied on a large scale.…”

Section: Research Status Of Green Cmp Slurriesmentioning

confidence: 99%

“…Therefore, these slurries cannot be applied on a large scale. There is an urgent need to develop an eco-friendly CMP slurry for Ti and Ti alloys [3]. Kaushik et al developed a simple slurry composed of emulsified oil and H 2 O 2 for CMP of Ti alloy (Ti-6.3Al-1.9V-2.9Zr-2.1Mo) [31].…”

Section: Research Status Of Green Cmp Slurriesmentioning

confidence: 99%

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A review: green chemical mechanical polishing for metals and brittle wafers

Liu¹,

Zhang²,

Wu³

et al. 2021

J. Phys. D: Appl. Phys.

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Chemical mechanical polishing (CMP) is the most effective technique to obtain global and local planarization of metal and brittle surfaces. Conventionally, CMP slurries contain strong acids, alkalis, or hazardous chemicals, which easily cause widespread environmental pollution and are harmful to the operators. It is a challenge to develop a novel green CMP slurry with eco-friendly and non-toxic compositions. Some substances with special structures contain versatile functional groups and have unique physical and chemical properties, including excellent chelating ability, ionization activity, biocompatibility and biodegradability, which have attracted the interest of CMP processing techniques. Therefore, researchers have begun to explore CMP slurries composed of environmentally friendly compositions. This review discussed the latest developments in the field of green CMP of metals and brittle wafers. The research on green CMP slurries was summarized and the future of the field was discussed.

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Influence of surface pre-treatment with mechanical polishing, chemical, electrochemical and ion sputter etching on the surface properties, corrosion resistance and MG-63 cell colonization of commercially pure titanium

Cited by 20 publications

References 57 publications

Influence of the Nb and V Addition on the Microstructure and Corrosion Resistance of the Fe-B-Co-Si Alloy

Influence of the Nb and V Addition on the Microstructure and Corrosion Resistance of the Fe-B-Co-Si Alloy

Development of Smart Sensing Film with Nonbiofouling Properties for Potentiometric Detection of Local pH Changes Caused by Bacterial and Yeast Infections Around Orthopedic Implants

A review: green chemical mechanical polishing for metals and brittle wafers

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