Scratch and wear behaviour of plasma sprayed nano ceramics bilayer Al 2 O 3 -13 wt%TiO 2 /hydroxyapatite coated on medical grade titanium substrates in SBF environment

Palanivelu, R.; Kumar, A. Ruban

doi:10.1016/j.apsusc.2014.07.167

Cited by 39 publications

(17 citation statements)

References 17 publications

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“…The thicker coatings have higher critical loads, what is presented in Ref. [21]. McEntire et al [22] discussed adhesion of HAp coatings and pointed out huge effect of deposition technique.…”

Section: Resultsmentioning

confidence: 99%

Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition

Moskalewicz

Babkiewicz

Dubiel

et al. 2016

Archives of Metallurgy and Materials

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Porous sio2/HAp coAtIngs on cp-tItAnIum grAde 1 surfAces Produced by electroPHoretIc dePosItIonPorous hydroxyapatite doped Sio2 coatings were electrophoretically deposited (EPD) on commercially pure titanium. The influence of EPD parameters on coatings quality was investigated. Microstructural observation was done using transmission and scanning electron microscopy as well as X-ray diffractometry.The coatings consisted of spherical micro and nanocrystalline hydroxyapatite (HAp) as well as amorphous Sio2 nanoparticles. The coatings exhibited open porosity with pore diameter up to 1 µm and due to presence of nanoparticles high surface development.It was found that application of Sio2/HAp coating increase corrosion resistance of titanium in Ringer's solution.

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Section: Resultsmentioning

confidence: 99%

Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition

Moskalewicz

Babkiewicz

Dubiel

et al. 2016

Archives of Metallurgy and Materials

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“…More micro-defects consisting of pinholes, interconnected porosities, and micro-cracks can be easily seen in the Al 2 O 3 -13%TiO 2 coating. These micro-defects can provide pathways for the infiltration of aggressive solution into the coating during corrosion and are able to deteriorate the mechanical properties of the coating [20,21,31]. Therefore, this layer should be modified [4,22,35] by applying a dense top layer such as a nano-TiO 2 layer.…”

Section: Methodsmentioning

confidence: 98%

“…In fact, air plasma-sprayed nanostructure Al 2 O 3 -13 wt% TiO 2 coating demonstrated better mechanical and corrosion properties than the conventional Al 2 O 3 -13 wt% TiO 2 coating [13,19,21,23,[29][30][31][32][33]. However, there still remains one major problem concerning plasma spraying, which is the presence of lamellar structures and microdefects including pores and micro-cracks; these tend to reduce the hardness and deteriorate the wear and corrosion performances of the coatings [20,29,31]. It is interesting to note that the use of decreasing current values involves lower plasma power, lower temperature of the sprayed particles, and therefore higher retention of the nanostructured areas and lower coating density [22], which may be observed in the plasma-sprayed nanostructure Al 2 O 3 -13 wt% TiO 2 coatings on the Mg alloys.…”

Section: Introductionmentioning

confidence: 98%

Microstructural characterisation of air plasma sprayed nanostructure ceramic coatings on Mg–1%Ca alloys (bonded by NiCoCrAlYTa alloy)

Daroonparvar

Yajid

Yusof

et al. 2016

Ceramics International

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“…Only a few studies involve the corrosion behavior of plasma-sprayed oxide coatings on steel ( .They show that clearly the corrosion resistance of the coated materials is related to the coating porosity ( Ref 24,25). However, there are few literatures concerning tribocorrosion of plasmasprayed ceramic coatings ( Ref 26,27).…”

Section: Introductionmentioning

confidence: 98%

Electrochemical Impedance Studies on Tribocorrosion Behavior of Plasma-Sprayed Al2O3 Coatings

Chu

Chen

et al. 2015

J Therm Spray Tech

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In this paper, the tribocorrosion of plasma-sprayed Al 2 O 3 coatings in simulated seawater was investigated by electrochemical impedance spectroscopy (EIS) technique, complemented by scanning electron microscopy to observe the morphology of the tribocorrosion attack. Base on EIS of plasma-sprayed Al 2 O 3 coatings undergoing long-time immersion in simulated seawater, the corrosion process of Al 2 O 3 coatings can be divided into the earlier stage of immersion (up to 20 h) and the later stage (beyond 20 h). Then, the wear tests were carried out on the surface of Al 2 O 3 coating undergoing different times of immersion to investigate the influence of wear on corrosion at different stages. The coexistence of wear and corrosion condition had been created by a boron nitride grinding head rotating on the surface of coatings corroded in simulated seawater. The measured EIS and the values of the fitting circuit elements showed that wear accelerated corrosion at the later stage, meanwhile, corrosion accelerated wear with the immersion time increasing.

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Scratch and wear behaviour of plasma sprayed nano ceramics bilayer Al 2 O 3 -13 wt%TiO 2 /hydroxyapatite coated on medical grade titanium substrates in SBF environment

Cited by 39 publications

References 17 publications

Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition

Porous SiO2/HAp Coatings on Cp-Titanium Grade 1 Surfaces Produced by Electrophoretic Deposition

Microstructural characterisation of air plasma sprayed nanostructure ceramic coatings on Mg–1%Ca alloys (bonded by NiCoCrAlYTa alloy)

Electrochemical Impedance Studies on Tribocorrosion Behavior of Plasma-Sprayed Al2O3 Coatings

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