Erosion wear performance of WC-10Co4Cr and Cr3C2-25NiCr coatings sprayed with high-velocity thermal spray processes

Matikainen, Ville; Peregrina, Silvia Rubio; Ojala, Niko; Koivuluoto, Heli; Schubert, Jan; Houdková, Šárka; Vuoristo, Petri

doi:10.1016/j.surfcoat.2019.04.067

Cited by 88 publications

(38 citation statements)

References 40 publications

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“…The obtained values of the hardness instrumented indentation and instrumented elastic modulus for the WC and CrC coatings are given in Table 6 . When compared with other results in the literature, the obtained values of EIT are similar [ 45 , 46 ]. Slight differences could result in a different structure (mainly the porosity level) and different details of the phase composition, which are derivatives of the process parameters.…”

Section: Resultssupporting

confidence: 80%

Comparison of Different Cermet Coatings Sprayed on Magnesium Alloy by HVOF

2021

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In the present study, two different cermet coatings, WC–CrC–Ni and Cr3C2–NiCr, manufactured by the high-velocity oxy-fuel (HVOF) method were studied. They are labeled as follows: WC–CrC–Ni coating—WC and Cr3C2–NiCr coating—CrC. These coatings were deposited onto a magnesium alloy (AZ31) substrate. The goal of the study was to compare these two types of cermet coating, which were investigated in terms of microstructure features and selected mechanical properties, such as hardness, instrumented indentation, fracture toughness, and wear resistance. The results reveal that the WC content influenced the hardness and Young’s modulus. The most noticeable effect of WC addition was observed for the wear resistance. WC coatings had a wear intensity value that was almost two times lower, equal to 6.5·10−6 mm3/N·m, whereas for CrC ones it was equal to 12.6·10−6 mm3/N·m. On the other hand, the WC coating exhibited a lower value of fracture toughness.

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Section: Resultssupporting

confidence: 80%

Comparison of Different Cermet Coatings Sprayed on Magnesium Alloy by HVOF

2021

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“…Continuous impacts resulted in crack propagation, crack growth and material removal in larger blocks. It has been discussed that compressive residual stresses hinder the crack growth and positively influence cavitation erosion resistance of the thermally sprayed coatings (Ref [13][14][15]. However, the residual stresses of coatings have been determined with adequate precision only in few studies yet, thus being able to link the residual stresses to wear performance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Residual Stresses and Their Influence on Cavitation Erosion Resistance of High Kinetic HVOF and HVAF-Sprayed WC-CoCr Coatings

et al. 2020

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Thermal spray processes have been developing toward lower particle temperature and higher velocity. Latest generation high-velocity oxygen-fuel (HVOF) and high-velocity air-fuel (HVAF) can produce very dense coating structures due to the higher kinetic energy typical for these thermal spray processes. Thermally sprayed coatings usually contain residual stresses, which are formed by a superposition of thermal mismatch, quenching and, in case of high kinetic energy technologies, peening stresses. These stresses may have a significant role on the mechanical response and fatigue behavior of the coating. Understanding these effects is mandatory for damage tolerant coating design and wear performance. For instance, wear-resistant WC-CoCr coatings having high compressive stresses show improved cavitation erosion performance. In this study, comparison of residual stresses in coatings sprayed by various thermal spray systems HVOF (Thermico CJS and Oerlikon Metco DJ Hybrid) and HVAF (Kermetico AcuKote) was made. Residual stresses were determined through thickness by utilizing Tsui and Clyne analytical model. The real temperature and deposition stress data were collected in the coating process by in situ technique. That data were used for the model to represent realistic residual stress state of the coating. The cavitation erosion and abrasion wear resistance of the coatings were tested, and relationships between residual stresses and wear resistance were discussed. Keywords cavitation-resistant coatings Á fracture toughness Á HVAF Á HVOF Á in situ monitoring Á residual stresses Á WC-CoCr

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“…In the face of the new requirements of high-end equipment and parts for wear-resistant, corrosion-resistant and thermal barrier properties of coatings, thermal spraying technology provides a new way to solve the problem. Nano thermal spraying coating breaks through the size limitation of materials, and brings the unique properties of nano materials to the coating [50,51]. No matter the porosity, strength, hardness and toughness of the coating, it has a great progress compared with the conventional micron coating [52].…”

Section: Application Of Thermal Spraying In Nano-coatingmentioning

confidence: 99%

Technical Characteristics and Wear-Resistant Mechanism of Nano Coatings: A Review

et al. 2020

Coatings

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Nano-coating has been a hot issue in recent years. It has good volume effect and surface effect, and can effectively improve the mechanical properties, corrosion resistance and wear resistance of the coatings. It is important to improve the wear resistance of the material surface. The successful preparation of nano-coatings directly affects the application of nano-coatings. Firstly, the preparation methods of conventional surface coatings such as chemical vapor deposition and physical vapor deposition, as well as the newly developed surface coating preparation methods such as sol-gel method, laser cladding and thermal spraying are reviewed in detail. The preparation principle, advantages and disadvantages and the application of each preparation method in nano-coating are analyzed and summarized. Secondly, the types of nano-coating materials are summarized and analyzed by inorganic/inorganic nanomaterial coatings and organic/inorganic nanomaterial coatings, and their research progress is summarized. Finally, the wear-resistant mechanism of nano-coatings is revealed from three aspects: grain refinement, phase transformation toughening mechanism and nano-effects. The application prospects of nano-coatings and the development potential combined with 3D technology are prospected.

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Erosion wear performance of WC-10Co4Cr and Cr3C2-25NiCr coatings sprayed with high-velocity thermal spray processes

Cited by 88 publications

References 40 publications

Comparison of Different Cermet Coatings Sprayed on Magnesium Alloy by HVOF

Comparison of Different Cermet Coatings Sprayed on Magnesium Alloy by HVOF

Evaluation of Residual Stresses and Their Influence on Cavitation Erosion Resistance of High Kinetic HVOF and HVAF-Sprayed WC-CoCr Coatings

Technical Characteristics and Wear-Resistant Mechanism of Nano Coatings: A Review

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