Correlations between microstructural parameters, micromechanical properties and wear resistance of plasma sprayed ceramic coatings

Erickson, Lynn; Hawthorne, H.M.; Troczynski, Tom

doi:10.1016/s0043-1648(01)00608-1

Cited by 92 publications

(33 citation statements)

References 13 publications

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“…Several authors [14,33,34] proposed that the wear of brittle ceramics is proportional to fracture toughness on the basis that wear occurs by brittle 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 cracking. Furthermore, an increase in TiO 2 addition forms a denser splat layer, which allows an increase in fracture toughness and a subsequent increase in wear resistance.…”

Section: Wear Characteristicmentioning

confidence: 99%

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

et al. 2015

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Abstract:In this study, friction and dry sliding wear behavior of alumina and alumina-titania nearnanometric coatings have been studied. Coatings were obtained by Suspension Plasma Spraying (SPS) technique. Dry sliding wear tests were performed in an a tribometer with a ball on disk configuration, using a Al2O3 ball as a counterpart with a normal load of 2N, a sliding distance of 1200m and a sliding speed of 0.1 m/s. The influence of TiO2 addition in fabricated coatings was related with friction coefficient behavior, wear rates and wear damage patterns. A remarkable increment in wear resistance was founded by the TiO2 addition effect, in 2.6 times for the biggest amount. The analysis of wear surface was correlated with microstructural parameters, mechanical properties and wear rates.

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Section: Wear Characteristicmentioning

confidence: 99%

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

et al. 2015

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“…Pores, cracks and delamination defects often appear in the coating, which bring a lot of adverse effects on coating performance. The coating quality depends on the settings of spray coating process parameters in the manufacturing process, it is unsuitable process parameter settings that cause those production problems [3].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Plasma Spray Process VIA Orthogonal Test Design Method, SVM, and Improved PSO

Xue¹,

Huang²

2017

IJMMM

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Abstract-Plasma spray is a widespread thermal spraying technology due to its unique advantages, but control of various defects in the coating is still the major trouble currently faced in the field. The key problem left to be solved is how to determine the optimum combination of input process parameters to achieve the required quality of coating. This research work integrates Orthogonal Test Design Method, Support Vector Machine (SVM), and Particle Swarm Optimization (PSO) algorithm to ascertain the optimal process parameter settings of the plasma spray. Orthogonal Test Design method is used to design a set of representative experiments for reducing the number of tests, simultaneously, accessing to the most valuable sample data. The data obtained from orthogonal test is used as samples for training and testing SVM so as to establish relation model between process parameters and the coating quality. Then, SVM is combined with Improved PSO to find the optimal combination of spraying parameters. In the end, the verification test is implemented to verify the effectiveness of the optimal process parameters.In this paper, the proposed method is applied to determine the optimal process parameter settings of aero-engine seal coating formed by plasma spray. The experimental results show that this method can overcome the shortcomings of the traditional orthogonal test which only obtain a discrete optimization and the difficulties to optimizing the complex systems when there are small samples or the high number of dimension, furtherly obtain the optimal ones in the continuous ranges of plasma spray process parameters, which contributes to spraying coatings with the best quality.Index Terms-Plasma spray, orthogonal test design method, support vector machine, particle swarm optimization.

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“…Earlier investigations [8][9][10][11][12] have also reported the wear of thermal sprayed coatings in dry sliding conditions. Wear behavior of plasma sprayed ZrO 2 + 8% Y 2 O 3 coatings, carried out on a reciprocating sliding tester at a temperature of 200 • C, is found to experience plastic deformation and material transfer [6].…”

Section: Introductionmentioning

confidence: 99%

A Study of Parameters Affecting Wear Resistance of Alumina and Yttria Stabilized Zirconia Composite Coatings on Al-6061 Substrate

Krishnamurthy

Prashanthareddy²,

Raju³

et al. 2012

ISRN Ceramics

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In this investigation, a composite coating of alumina and yttria stabilized zirconia in equal proportion was developed on Al-6061 substrate using Atmospheric Plasma Spraying technique. Two commercially available powders of chemical composition Al 25Fe7Cr5Ni and Al 2 O 3 30(Ni 20Al) were used as bond coats. The coating samples were subjected to abrasive wear test as per ASTM G99. From the results it was found that wear rate and coefficient of friction depend on various parameters such as microstructure, surface roughness, porosity, coating thickness, and hardness. It was also found that the mechanism of wear is mainly due to abrasion and once the bond coat is exposed to the disc, it loses material by adhesion. As the coating systems possess α-Al 2 O 3 and ZrO 2 , they can be used for wear and heat resistant applications such as cylinder liner of internal combustion engines.

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Correlations between microstructural parameters, micromechanical properties and wear resistance of plasma sprayed ceramic coatings

Cited by 92 publications

References 13 publications

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

Optimization of Plasma Spray Process VIA Orthogonal Test Design Method, SVM, and Improved PSO

A Study of Parameters Affecting Wear Resistance of Alumina and Yttria Stabilized Zirconia Composite Coatings on Al-6061 Substrate

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