Abrasive wear mechanisms of VPS‐ and HVOF‐sprayed TiC‐Ni based nanocrystalline coatings

Qi, Xiumei; Aust, E.; Eigen, N.; Gärtner, F.; Bormann, R.

doi:10.1002/mawe.200400820

Cited by 8 publications

(2 citation statements)

References 21 publications

(22 reference statements)

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“…Two-body abrasive wear tests: The grinding wheel wear test (JIS H8615) and scratch tests were used to investigate the two-body abrasive wear of the coatings. In the grinding wheel wear test, [26,27] an adhesive strip of 320 grit SiC abrasive paper (mean particle size of 45 lm, Adolf Fette GmbH & Co., Hamburg, Germany) is glued to an aluminium grinding wheel and pressed onto the coating with a normal load of 30 N. After sliding 30 mm back and forth (one double-stroke (DS)), the wheel was turned 0.9°to apply fresh abrasive paper for the next DS. After 400 DS, i.e.…”

Section: Methodsmentioning

confidence: 99%

TiC‐Based Cermet Coatings: Advanced Wear Performance by Nanocrystalline Microstructure

Qi¹,

Aust²,

Eigen³

et al. 2006

Adv Eng Mater

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Abrasive wear occurs in many engineering applications, e.g. on cutting tools, on components exposed to rapidly moving slurry, or on rolls in the paper industry. In most cases it is detrimental, leading to increased surface roughness and surface damage, dimensional changes of components and increased clearances between moving components. [1] Many materials used for applications, in which abrasive wear resistance is a major requirement, are based on cermets, consisting of a metallic matrix reinforced by dispersed ceramic particles. This type of material combines metallic properties like ductility and toughness with ceramic characteristics such as high hardness, leading to high wear resistance. To improve the mechanical properties of these composite materials further, the microstructure of cermets was refined e. g. by high-energy milling to the nanoscale range. [2,3] Such nanocrystalline cermets exhibit enhanced mechanical properties compared to the microcrystalline materials due to the extremely small grain dimensions. [4,5] As an example, Figure 1 summarizes the hardness of nano-and microcrystalline WC-Co composites as a function of their mean hard phase particle size reported in. [6][7][8][9] As expected, the hardness increases with decreasing grain size.The application of cermet coatings instead of costly massive components to protect locally against wear or corrosion is widely utilised in industry. [10] Especially wear resistant composite coatings, e. g. on WC-Co basis, have found their way into an increasing number of applications. [11,12] In the present work, vacuum plasma spraying (VPS) was used for the preparation of the nano-and the microcrystalline coatings. The VPS technique has the advantage to minimize the oxidation of the spray particles and of the deposited coatings during spraying. TiC-Ni based composite materials, containing Mo, Co and N, are chosen to demonstrate influences by using nanocrystalline instead of microcrystalline powders in thermal spraying, which is expected to increase the wear resistance of the coatings. As compared to WC or Cr 3 C 2 , TiC shows significantly higher thermal and thermodynamic stabilities and can lead to less undesired reactions with the metallic matrixes. Thus, the respective TiC-based composites should be ideal to study size effects. As demonstrated for nano-and microcrystalline high velocity oxy-fuel (HVOF) sprayed WC-Co coatings, enhanced kinetics and low thermal stability of carbides can have a detrimental influence on wear performance. [13,14] Correspondingly, it was found that TiCFeCr coatings produced by HVOF spraying show higher COMMUNICATIONS ADVANCED ENGINEERING MATERIALS 2006, 8, No. 5

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Section: Methodsmentioning

confidence: 99%

TiC‐Based Cermet Coatings: Advanced Wear Performance by Nanocrystalline Microstructure

Qi¹,

Aust²,

Eigen³

et al. 2006

Adv Eng Mater

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“…The most promising approach achieving wear resistant material is surface coating. In the last few decades, various surface coating techniques have been developed to improve the performance of materials [4][5][6][7][8][9]. In these techniques, high-velocity oxy fuel has received significant consideration worldwide due to its wide applications.…”

Section: Introductionmentioning

confidence: 99%

Impact of high‐velocity oxy‐fuel sprayed TiAlN surface coating on mechanical and slurry erosion performance of aluminium alloys

Kiragi

Patnaik

Singh

2019

Materialwissenschaft Werkst

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TiAlN coatings were deposited on AA1050 and AA5083 aluminium alloys by high‐velocity oxy‐fuel (HVOF) spray process and evaluated for their mechanical and slurry erosion performance. In comparison to base alloys, the mechanical properties were found to enhance upon coating. The effect of working parameters namely impingement angle, impact velocity, erodent size and erodent feed rate on the slurry erosion wear rate has been investigated. The slurry erosion wear rate of the uncoated samples was found to decrease with an increase in the impingement angle whereas for coated samples the slurry erosion wear rate first increased, reached to a maximum value at 60° and then decreased with further increase in the impingement angle. For uncoated and coated samples the slurry erosion wear rate was found to increase with an increase in impact velocity, erodent size and erodent feed rate. Finally, the morphology of the eroded surfaces was analyzed using scanning electron microscopy and the possible erosion mechanisms have been studied.

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HVOF Spraying of Fe-Based MMC Coatings with In Situ Formation of Hard Particles by Hot Isostatic Pressing

et al. 2012

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Abrasive wear mechanisms of VPS‐ and HVOF‐sprayed TiC‐Ni based nanocrystalline coatings

Cited by 8 publications

References 21 publications

TiC‐Based Cermet Coatings: Advanced Wear Performance by Nanocrystalline Microstructure

TiC‐Based Cermet Coatings: Advanced Wear Performance by Nanocrystalline Microstructure

Impact of high‐velocity oxy‐fuel sprayed TiAlN surface coating on mechanical and slurry erosion performance of aluminium alloys

HVOF Spraying of Fe-Based MMC Coatings with In Situ Formation of Hard Particles by Hot Isostatic Pressing

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