Influence of heat treatment on bond strength and corrosion resistance of sol–gel derived bioglass–ceramic coatings on magnesium alloy

Shen, Sibo; Cai, Shu; Xu, Guohua; Zhao, Huan; Niu, Shiyu; Zhang, Ruiyue

doi:10.1016/j.jmbbm.2015.02.005

Cited by 37 publications

(15 citation statements)

References 34 publications

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“…Figure 6 shows the bonding strengths of HA and La-HA coatings sintered at 600 °C. The bonding strengths for HA, 10% La-HA, 20% La-HA and 30% La-HA coatings were 22.9 ± 0.7, 22.2 ± 1.0, 24.0 ± 0.8 and 24.7 ± 1.0 MPa, respectively, which were higher than those in previous studies for electrophoretic and sol-gel HA coatings (7~27 MPa) [ 30 , 31 , 32 , 33 ]. The La-HA coatings achieved slightly higher mean values at La contents of 20% and 30% compared that for the pure HA coating.…”

Section: Resultscontrasting

confidence: 60%

Preparation and Characterization of Lanthanum-Incorporated Hydroxyapatite Coatings on Titanium Substrates

Lou

Dong

Zhang

et al. 2015

IJMS

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Titanium (Ti) has been widely used in clinical applications for its excellent biocompatibility and mechanical properties. However, the bioinertness of the surface of Ti has motivated researchers to improve the physicochemical and biological properties of the implants through various surface modifications, such as coatings. For this purpose, we prepared a novel bioactive material, a lanthanum-incorporated hydroxyapatite (La-HA) coating, using a dip-coating technique with a La-HA sol along with post-heat treatment. The XRD, FTIR and EDX results presented in this paper confirmed that lanthanum was successfully incorporated into the structure of HA. The La-HA coating was composed of rod-like particles which densely compacted together without microcracks. The results of the interfacial shear strength test indicated that the incorporation of lanthanum increased the bonding strength of the HA coating. The mass loss ratios under acidic conditions (pH = 5.5) suggested that the La-HA coatings have better acid resistance. The cytocompatibility of the La-HA coating was also revealed by the relative activity of alkaline phosphatase, cellular morphology and cell proliferation assay in vitro. The present study suggested that La-HA coated on Ti has promising potential for applications in the development of a new type of bioactive coating for metal implants.

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Section: Resultscontrasting

confidence: 60%

Preparation and Characterization of Lanthanum-Incorporated Hydroxyapatite Coatings on Titanium Substrates

Lou

Dong

Zhang

et al. 2015

IJMS

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“…When in contact with the physiological environment they stimulate bony tissue repair and lead to the creation of a strong bond between the surrounding tissue and the medical device [16][17][18][19][20]. Dental implants are currently coated with hydroxyapatite [HA, Ca 10 (PO 4 ) 6 (OH) 2 ] or biphasic calcium phosphates (CaP) [HA+ȕ-Ca 3 (PO 4 ) 2 ] layers deposited by plasma spraying [22].…”

Section: Introductionmentioning

confidence: 99%

Superior biofunctionality of dental implant fixtures uniformly coated with durable bioglass films by magnetron sputtering

Popa¹,

Stan

Enculescu

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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“…From a synthetic point of view, bioglasses can be prepared either by melting or sol-gel methods, which affect their physical and biological properties [105], but it is also important to define the methods of coating preparation or deposition affecting the ultimate performance of the coatings. Bioglass coatings are usually deposited onto metals or alloys using sol-gel [106], electrophoretic deposition [107], laser cladding [108], and thermal spraying (plasma spraying and high-velocity oxy-fuel) techniques [109]. The technique most employed to spray bioglass since 1980 is thermal spraying and specifically atmospheric plasma spraying, due to its low cost and industrial feasibility [110,111].…”

Section: Sol-gel-derived Bioactive Glass Coatingsmentioning

confidence: 99%

“…The sol-gel technique can be used to coat 316 L SS [112], titanium [4], and magnesium biomedical alloys [106] with bioactive glass or derived glass-ceramic.…”

Section: Sol-gel-derived Bioactive Glass Coatingsmentioning

confidence: 99%

“…In parallel, residual stress gradually accumulates at the interface between the coating and the substrate [113], remarkably affecting bond strength and the corrosion resistance of samples [114]. Therefore, heat treatments must be carefully controlled and optimized to obtain favorable bonding properties as well as corrosion resistance for sol-gel-derived coatings on magnesium alloy implants [106].…”

Section: Sol-gel-derived Bioactive Glass Coatingsmentioning

confidence: 99%

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Surface Science Engineering through Sol-Gel Process

Carrera‐Figueiras¹,

Pérez‐Padilla²,

Estrella‐Gutiérrez³

et al. 2019

Applied Surface Science

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Sol-gel synthesis is used to obtain coatings that can modify the surfaces of metals to avoid corrosion or to enhance the biocompatibility and bioactivity of metals and their alloys that are of biomedical interest. Anticorrosion coatings composed of smart coatings and self-healing coatings will be described. TiO 2 , hydroxyapatite, bioglass, and hybrid coatings synthetized by sol-gel technology will be briefly introduced with regard to their role in surface-modifying metals for biomedical purposes. Finally, although there are other approaches to surface-modifying metals for either anticorrosion or biomedical purposes, sol-gel methods have several advantages in controlling surface chemistry composition and functionality.

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Influence of heat treatment on bond strength and corrosion resistance of sol–gel derived bioglass–ceramic coatings on magnesium alloy

Cited by 37 publications

References 34 publications

Preparation and Characterization of Lanthanum-Incorporated Hydroxyapatite Coatings on Titanium Substrates

Preparation and Characterization of Lanthanum-Incorporated Hydroxyapatite Coatings on Titanium Substrates

Superior biofunctionality of dental implant fixtures uniformly coated with durable bioglass films by magnetron sputtering

Surface Science Engineering through Sol-Gel Process

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