Solution Precursor Plasma Spraying (SPPS): A novel and simple process to obtain bioactive glass coatings

Cañas, E.; Orts, M.J.; Boccaccını, Aldo R.; Sánchez, E.

doi:10.1016/j.matlet.2018.04.031

Cited by 19 publications

(4 citation statements)

References 14 publications

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“…Such feedstock is suitable to obtain coatings with very fine microstructure [65,66]. The solution precursors are easier to obtain with high purity, without contamination occurring frequently at suspension preparation [67]. •…”

Section: Solution Precursor Plasma Sprayingmentioning

confidence: 99%

Review of Functionally Graded Thermal Sprayed Coatings

et al. 2020

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The paper briefly describes major thermal spray techniques used to spray functionally graded coatings such as atmospheric plasma spraying, high velocity oxy-fuel spraying, suspension and solution precursor plasma spraying, and finally low and high pressure cold gas spray method. The examples of combined spray processes as well as some examples of post spray treatment including laser and high temperature treatments or mechanical one, are described. Then, the solid and liquid feedstocks used to spray and their properties are shortly discussed. The reviewed properties of functional coatings include: (i) mechanical (adhesion, toughness, hardness); (ii) physical (porosity, thermal conductivity and diffusivity, thermal expansion, photo-catalytic activity), and; (iii) bioactivity and simulated body fluid (SBF) corrosion. These properties are useful in present applications of functionally graded coatings as thermal barriers, the bioactive coatings in prostheses, photo-catalytic coatings in water treatment, coatings used in printing industry (anilox and corona rolls). Finally, some of the future possible fields of functional thermal sprayed coatings applications are discussed, e.g., to coat polymer substrates or to use the cheap technology of low pressure cold gas spray method instead of expensive technology of vacuum plasma spraying to obtain bond coatings.

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Section: Solution Precursor Plasma Sprayingmentioning

confidence: 99%

Review of Functionally Graded Thermal Sprayed Coatings

et al. 2020

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“…SPPS yields to high purity feedstock compared to HVSFS and SPS, because such a technique avoids traditional processing steps such as melting, quenching, milling, drying etc., which can insert contaminant into feedstock. SPPS permits to spray thin coatings, even nanostructured, with a highly homogeneous microstructure [66,67,92,93]. The phenomena occurring during solution spraying involve the precipitation of solute, and are different from the phenomena occurring during SPS processes.…”

Section: Thermal Sprayingmentioning

confidence: 99%

“…At the moment, there are just a few studies regarding SPPS with bioactive glass precursors. 45S5 bioactive glass coatings were deposited by SPPS on AISI304 stainless steel (with TiO 2 bond coat) by Cañas et al [93] By varying the argon flow rate and the spraying distance different morphologies of coatings were obtained [93]. Better coatings were obtained with short spraying distance and high plasma torch enthalpy.…”

Section: Thermal Sprayingmentioning

confidence: 99%

A Comprehensive Review of Bioactive Glass Coatings: State of the Art, Challenges and Future Perspectives

2020

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Bioactive glasses are promising biomaterials for bone and tissue repair and reconstruction, as they were shown to bond to both hard and soft tissues stimulating cells towards a path of regeneration and self-repair. Unfortunately, due to their relatively poor mechanical properties, such as brittleness, low bending strength and fracture toughness, their applications are limited to non-load-bearing implants. However, bioactive glasses can be successfully applied as coatings on the surface of metallic implants to combine the appropriate mechanical properties of metal alloys to bioactivity and biocompatibility of bioactive glasses. In this review, several available coating techniques to coat metal alloys using bioactive glasses are described, with a special focus on thermal spraying, which nowadays is the most used to deposit coatings on metallic implants.

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“…It is possible to find studies developing bioactive glasses coatings by different thermal spray processes [23][24][25][26][27][28][29]. Some of these studies use just the glass powder, others use suspensions, others solution precursors and there are also works were mix the glasses with other compositions.…”

Section: Introductionmentioning

confidence: 99%