Erosion Behavior of Plasma Sprayed Alumina and Calcia-Stabilized Zirconia Coatings on Cast Iron Substrate

Krishnamurthy, N.; Murali, Mariappan; Venkataraman, B.; Mukunda, P. G.

doi:10.5772/30912

Cited by 2 publications

(3 citation statements)

References 34 publications

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“…For the middle coating thickness, the bond strength of 176.8153 MPa is found. It is clear evidence that the bond strength decreases with increase in thickness of the coatings, above observation, also agreed by the earlier researcher [3,27,28]. Due to the thermal cyclic effect, more residual stresses will build up, which perhaps reduce the top coating strength of the layer.…”

Section: Effect Of Curing On Adhesion Strength and Mechanical Propert...supporting

confidence: 83%

Studies on Plasma Sprayed Thermal Barrier Coating with Increase in Coating Thickness

Nayak¹,

Krishnamurthy²,

Shailesh³

2018

Tribol. Ind.

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In this study, the nature of performance test like a bond test, wear test and hot corrosion test and its effects on plasma sprayed Yttriastabilized zirconia and Al2O3 composite (50:50 compositions) coating on Aluminium 6061 substrate are carried out. The three topcoat thicknesses of 100µm, 200µm, and 300µm are used for the studies. In case of hot corrosion test, the substrates were spread by molten salt (55wt.% V2O5+45wt.%Na2SO4) which is kept in the furnace at 350 °C for 40 hours. The properties changed for the different bond thickness where for 200 µm wear properties become optimal and 300 µm the corrosion test remains optimal. There is an improvement in the bond strength and its optimal value is obtained for 100 µm topcoat thickness. The physics behind all three experiments are explained in this paper.

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Section: Effect Of Curing On Adhesion Strength and Mechanical Propert...supporting

confidence: 83%

Studies on Plasma Sprayed Thermal Barrier Coating with Increase in Coating Thickness

Nayak¹,

Krishnamurthy²,

Shailesh³

2018

Tribol. Ind.

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“…Interestingly during testing in previous work a drop in the mass loss rate was found, although slightly later into the test which could be an indication of an incubation period. [15]. Measurements were only taken every 20 minutes and thus it is quite possible that the incubation period was missed.…”

Section: Effects Of Linear Velocity On the Erosion Of Mild Steelmentioning

confidence: 99%

“…Measurements were only taken every 20 minutes and thus it is quite possible that the incubation period was missed. Lee (1990) [15] identified an incubation period of roughly 2 minutes for steel containing 0.41% Carbon. After 40 minutes the mass loss rate starts increasing again signifying erosion of the mild steel as expected after the incubation period, which was proposed by Tobin et al [12].…”

Section: Effects Of Linear Velocity On the Erosion Of Mild Steelmentioning

confidence: 99%

On the Construction of Raindrop Erosion Maps for Steel

Sloan¹,

Stack²

2020

Preprint

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Raindrop erosion is a significant materials limiting issue. It can affect materials for transportation and renewable energy converters such as wind turbines as well as all external structures used in the construction industries. In such cases, the raindrop effects can occur over a wide range of impact velocities and particles sizes. In understanding tribological variable effects, it is useful to study using reference materials. This is because the reference material is well characterized, from previous knowledge of the tribological and corrosion patterns. Further, the well established chemical composition and stochiometry of the corrosion products provide some background understanding of how effectively, during tribological action, the surface scale adheres to the substrate. In this study, a carbon steel was used as a reference to study the effects of velocity and drop diameter in a whirling arm erosion test rig. The results were used to establish the conditions where corrosion was accelerated and the environments where aerodynamic effects may have resulted in droplets being deflected the surfaces. Erosion maps were generated to illustrate such mechanisms based on the results.

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Erosion Behavior of Plasma Sprayed Alumina and Calcia-Stabilized Zirconia Coatings on Cast Iron Substrate

Cited by 2 publications

References 34 publications

Studies on Plasma Sprayed Thermal Barrier Coating with Increase in Coating Thickness

Studies on Plasma Sprayed Thermal Barrier Coating with Increase in Coating Thickness

On the Construction of Raindrop Erosion Maps for Steel

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