Fatigue and mechanical properties of nanostructured and conventional titania (TiO2) thermal spray coatings

Ibrahim, Ahmed Mohamed Mahmoud; Lima, Rogerio S.; Berndt, C. C.; Marple, Basil R.

doi:10.1016/j.surfcoat.2007.02.025

Cited by 70 publications

(40 citation statements)

References 15 publications

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“…6 and 8 has demonstrated superior mechanical performance when compared to its conventional counterparts ( Ref 4,10,44,59). TiO 2 is also a material that does not dissolve in human body fluids.…”

Section: Superior Mechanical Performance Of Nanostructured Tio 2 Coatmentioning

confidence: 99%

Thermal Spray Coatings Engineered from Nanostructured Ceramic Agglomerated Powders for Structural, Thermal Barrier and Biomedical Applications: A Review

2007

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Section: Superior Mechanical Performance Of Nanostructured Tio 2 Coatmentioning

confidence: 99%

Thermal Spray Coatings Engineered from Nanostructured Ceramic Agglomerated Powders for Structural, Thermal Barrier and Biomedical Applications: A Review

2007

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“…The effects of residual stresses (Ref [1][2][3][4][5][6], interface properties (Ref 7,8), or failure mode of the coatings (Ref [9][10][11] were investigated. Despite the number of articles published, the actual damage scenario of many types of coating-substrate composites is still not fully understood.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Crack Growth in Bodies with Thermally Sprayed Coating

et al. 2015

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Many applications of thermally sprayed coatings call for increased fatigue resistance of coated parts. Despite the intensive research in this area, the influence of coating on fatigue is still not completely understood. In this paper, the localization of crack initiation sites and the dynamics of crack propagation are studied. The resonance bending fatigue test was employed to test flat specimens with both sides coated. Hastelloy-X substrates coated with classical thermal barrier coating consisting of yttria stabilized zirconia and NiCoCrAlY layers. The strain distribution on the coating surface was evaluated by the Digital Image Correlation method through the whole duration of the fatigue test. Localization of crack initiation sites and the mode of crack propagation in the coated specimen are related to the observed resonance frequency. The individual phases of specimen degradation, i.e., the changes of material properties, crack initiation, and crack propagation, were identified. The tested coatings strongly influenced the first two phases, and the influence on the crack propagation was less significant. In general, the presented crack detection method can be used as a sensitive nondestructive testing method well suited for coated parts.

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“…Attempts to compare the mechanical properties of micro-and nanostructured TiO 2 coatings sprayed by APS and HVOF have been carried out in different studies (Ref 67,68). HVOF coatings obtained from nanostructured TiO 2 feedstock powders showed enhanced abrasion resistance, bond strength, crack propagation resistance, and fatigue strength when compared with microstructured APS and HVOF samples.…”

Section: Photocatalytic Degradation Of Contaminantsmentioning

confidence: 99%

Milestones in Functional Titanium Dioxide Thermal Spray Coatings: A Review

Gardon

Guilemany

2014

J Therm Spray Tech

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Titanium dioxide has been the most investigated metal oxide due to its outstanding performance in a wide range of applications, chemical stability and low cost. Coating processes that can produce surfaces based on this material have been deeply studied. Nevertheless, the necessity of coating large areas by means of rapid manufacturing processes renders laboratory-scale techniques unsuitable, leading to a noteworthy interest from the thermal spray (TS) community in the development of significant intellectual property and a large number of scientific publications. This review unravels the relationship between titanium dioxide and TS technologies with the aim of providing detailed information related to the most significant achievements, lack of knowhow, and performance of TS TiO 2 functional coatings in photocatalytic, biomedical, and other applications. The influence of thermally activated techniques such as atmospheric plasma spray and high-velocity oxygen fuel spray on TiO 2 feedstock based on powders and suspensions is revised; the influence of spraying parameters on the microstructural and compositional changes and the final active behavior of the coating have been analyzed. Recent findings on titanium dioxide coatings deposited by cold gas spray and the capacity of this technology to prevent loss of the nanostructured anatase metastable phase are also reviewed.

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Fatigue and mechanical properties of nanostructured and conventional titania (TiO2) thermal spray coatings

Cited by 70 publications

References 15 publications

Thermal Spray Coatings Engineered from Nanostructured Ceramic Agglomerated Powders for Structural, Thermal Barrier and Biomedical Applications: A Review

Thermal Spray Coatings Engineered from Nanostructured Ceramic Agglomerated Powders for Structural, Thermal Barrier and Biomedical Applications: A Review

Fatigue Crack Growth in Bodies with Thermally Sprayed Coating

Milestones in Functional Titanium Dioxide Thermal Spray Coatings: A Review

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