Characterization of Advanced Ceramic Materials Thin Films Deposited on Fe-C Substrate

Florea, Costel; Munteanu, Corneliu; Cimpoeşu, Nicanor; Sandu, Ioan Gabriel; Baciu, Constantin; Bejinariu, Costică

doi:10.37358/rc.17.11.5933

Cited by 13 publications

(7 citation statements)

References 18 publications

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“…This is a good characterization method, at least when it's not possible to access an AFM equipment. Several SEM microscopes with software already equipped with this projection option [23] are available as well.…”

Section: Methodsmentioning

confidence: 99%

Influence of Alumina Nanoparticles on the Mechanical Properties of a Bioresin Composite

Ciucă¹,

Solomon²,

Grigore³

et al. 2021

Mater. Plast.

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A significant part of the research and production activities is represented in the field of bioengineering by the biomaterials used in hard tissue restorations. They are of great interest in dental science, intending to improve technological aspects, monitoring their biological responses to the living organisms, but also to redesign economic aspects, beginning with the choice of raw materials. In the present work, light-curing composite biomaterials were made from a composite polymer matrix consisting of specific concentrations of bisphenol A-glycidyl methacrylate base monomer (Bis-GMA), a mixture of two co-monomers, triethylene glycol dimethacrylate and ethoxylated bisphenol A-dimethacrylate (TEGDMA/BisEMA), and two alumina nanopowder concentrations (5 wt.% and 10 wt.%). These materials were mechanically tested for flexural strength and compressive strength. The structural analysis of these materials consisted of SEM microscopy and EDX elementary mapping. In order to extract 3D projections of sample surfaces, but also to produce indicative values of their roughness, the SEM micrographs were processed with open-source software. In order to observe a clear evolution of the mentioned properties, the composite biomaterials were compared with materials formed only with the Bis-GMA/TEGDMA/BisEMA composite, and with a commercial composite resin, Filtek Supreme Ultra Universal Restorative, also. The findings showed an increase in the mechanical properties of the materials manufactured concerning the concentration of nanoparticles of aluminum. EDX analyzes confirmed the good homogeneity of nanoparticles in the polymer matrix. Mechanical properties of the manufactured nanocomposite biomaterials were reported 28.8 % higher than the control biomaterial. The comparison results with the commercial resin composite are encouraging.

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Section: Methodsmentioning

confidence: 99%

Influence of Alumina Nanoparticles on the Mechanical Properties of a Bioresin Composite

Ciucă¹,

Solomon²,

Grigore³

et al. 2021

Mater. Plast.

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“…One important method of increasing the corrosion resistance properties of carbon steel carabiners is zinc phosphate deposition by conversion [12]. The phosphating process is one of the most commonly used corrosion protection techniques, being a simple and economical process, which doesn't require highly qualified staff or expensive raw materials [13,14].…”

Section: Rubber Coating -Shock Resistancementioning

confidence: 99%

Shock Resistance Improvement of Carbon Steel Carabiners Used at PPE

et al. 2019

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In a continuously changing world where the human operator still plays an important role in most industrial activities, health and safety occupies a fundamental place, with the goal of maintaining workers healthy and in safe condition during their job activities. One of the means that make this goal achievable is the use of adequate personal protective equipment. The carabiners are connecting parts that link the components quickly and reversibly of personal protective equipment used against falls. Thus shackles can be divided in multiple elements, such as: the gate, which always opens inward and can be provided with or without the locking system, the second and the biggest element is the body which can have different form according to the BS EN 12275:2013 standard, the gate and the body are connected thru the rivet pin and nose. The personal fall arrest system used in areas such as construction, speleology, petroleum industry, includes metal components that must possess high mechanical properties, especially shock-resistance. In order to improve resilience, a layer of rubber paint will be deposited on the carabiner surface. The aim of this study is to analyse the influence of rubber coating on the carabiners shock resistance.

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“…Before the deposition process all the samples surface was prepared by grinding with sandblast in order to improve the adherence of the ceramic layer to the metallic substrate [17]. For deposition process the equipment can cover big surfaces until 4 m 2 in a very short time representing a proper solution for industrial applications.…”

Section: Experimental Partmentioning

confidence: 99%

Electro-chemical Corrosion of a Cast Iron Protected with a Al2O3 Ceramic Layer

Bejinariu¹,

Munteanu²,

Florea³

et al. 2019

Rev. Chim.

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Thin layers of Al2O3 were used to protect a standard FC250 cast iron at electro-corrosion in acid rain electrolyte solution. In comparison with a cast-iron material we present the results obtained on the metallic covered sample using linear and cyclic potentiometry. The material surface was investigated using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) techniques. The results present a generalized corrosion with a higher resistance for covered samples (more than 30 times) in comparison with the simple cast iron. The main causes of the corrosion of the covered samples are based on the thin ceramic layer imperfections like pores or micro-cracks that facilitate the contact of the electrolyte solution with the metallic substrate.

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Characterization of Advanced Ceramic Materials Thin Films Deposited on Fe-C Substrate

Cited by 13 publications

References 18 publications

Influence of Alumina Nanoparticles on the Mechanical Properties of a Bioresin Composite

Influence of Alumina Nanoparticles on the Mechanical Properties of a Bioresin Composite

Shock Resistance Improvement of Carbon Steel Carabiners Used at PPE

Electro-chemical Corrosion of a Cast Iron Protected with a Al2O3 Ceramic Layer

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