Simultaneous increase of friction coefficient and wear resistance through HVOF sprayed WC-(nano WC-Co)

Gao, Peihu; Chen, Bai-Yang; Wang, Wei; Jia, Han; Li, Jianping; Yang, Zhong; Guo, Yongchun

doi:10.1016/j.surfcoat.2019.02.042

Cited by 34 publications

(18 citation statements)

References 39 publications

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“…The strengthening of bond phase is responsible in simultaneously increasing in friction coefficient and wear resistance. 53 Gahr K-HZ et al 54 have also reported that surface modification of alumina part plays an important role in increasing wear resistance and friction coefficient simultaneously. The calculated value of the Hertzian contact radius (a≈39.3 µm) and Hertzian contact pressure (P max ≈1.51 GPa) is too high and may also suggest the plastic deformation.…”

Section: Tribo-mechanical Behaviourmentioning

confidence: 99%

Effect of nano CuO addition on the tribo‐mechanical behavior of alumina ceramics in non‐conformal contact

Haldar¹,

Bhattacharya

Modak

2020

Int J Applied Ceramic Tech

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The well-known alumina ceramics have extensive structural application due to its outstanding physico-mechanical properties like hardness, wear resistance, good thermal conductivity, and thermal and chemical stability even at high temperature. 1 Its typical application includes in various engineering fields such as laser tubes, cutting tools, wear pads, high temperature electrical insulators, electronic substrates, automobiles, especially in unlubricated engines, aerospace, and even in biomaterials. 2-7 However, the fracture toughness of alumina ceramics is low, as a result, the material becomes brittle and thus its application reduces. Numerous research has been carried out to improve tribological behavior in conformal contact by incorporation of oxides like CuO, Y 2 O 3, ZrO 2, MgO, TiO 2 , Nb 2 O 3 8-12 and nonoxides like SiC, TiN, TiB 2 ,CNT 13 etc as a secondary phase in alumina matrix. Valefi et al 14 investigated the effect of CuO addition into yttria stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics sliding against alumina ball in conformal contact. They reported that the coefficient of friction (COF) reduces to 0.35 with a low wear rate (<10 −6 m 3 /N m) due to accumulation of soft copper oxide layer which causes shifting of the wear mechanism from brittle to ductile and increases wear resistance. The effect of different lubricating additives like TiC, CNT, CaF 2 etc to improve tribological attributes of alumina and alumina-zirconia composite up to a certain level of addition and range of temperature by reinforcement in the matrix was also reported by several researchers. 15-18 Countersurface plays an essential role on COF Kerkwijk et al 10 have reported that COF changes from 0.65 to 0.43 when Al 2 O 3 ball is replaced by Y-TZP ball as a counter surface on 5 wt.% CuO added alumina sintered. The tribo-mechanical properties of CuO/3Y-TZP composite system sliding upon Al 2 O 3

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Section: Tribo-mechanical Behaviourmentioning

confidence: 99%

Effect of nano CuO addition on the tribo‐mechanical behavior of alumina ceramics in non‐conformal contact

Haldar¹,

Bhattacharya

Modak

2020

Int J Applied Ceramic Tech

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“…Hangzhou Mechanical Design Research Institute adopts high Mach Oxygen-Kerosene supersonic intelligent thermal spraying process, spraying material adopts nano-modified tungsten carbide (S4020) powder, combined with advanced surface modification technology and 3D intelligent programming technology, to protect the turbine from abrasion and prolong the service life of the unit Figure 7. Schematic of wear mechanism of WC-(nano WC-Co) [55]. Reprinted with permission from [55]; 2019 Elsevier.…”

Section: Application Of Thermal Spraying In Nano-coatingmentioning

confidence: 99%

“…Schematic of wear mechanism of WC-(nano WC-Co)[55]. Reprinted with permission from[55]; 2019 Elsevier.…”

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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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“…The objective was to determine the nano additive that significantly reduced wear on elements subjected to sliding friction. On the other hand [34], they carried out an investigation focused on reducing wear and increasing the coefficient of friction simultaneously by means of coatings, with the aim of prolonging the useful life of automotive brakes, where high friction is required and low wear. The tests were performed on a block-on-ring tribometer.…”

Section: Iviv Block On Ring Tribometermentioning

confidence: 99%

TRIBOMETRY: How is friction research quantified? A review

Valdes¹,

Marín²,

Rodriguez-Cabal³

et al. 2020

International Journal of Engineering Research and Technology

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Simultaneous increase of friction coefficient and wear resistance through HVOF sprayed WC-(nano WC-Co)

Cited by 34 publications

References 39 publications

Effect of nano CuO addition on the tribo‐mechanical behavior of alumina ceramics in non‐conformal contact

Effect of nano CuO addition on the tribo‐mechanical behavior of alumina ceramics in non‐conformal contact

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

TRIBOMETRY: How is friction research quantified? A review

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