Microstructural and mechanical characterizations of a novel HVOF-sprayed WC-Co coating deposited from electroless Ni–P coated WC-12Co powders

Jafari, Morad; Enayati, M.H.; Salehi, Mehdi; Nahvi, S.M.; Park, C.G.

doi:10.1016/j.msea.2013.04.064

Cited by 58 publications

(24 citation statements)

References 39 publications

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“…The specimens were degreased in an alkaline solution for 2 minutes after polishing. The alkaline solution was composed of NaOH, Na 2 …”

Section: Materials and Pretreatmentmentioning

confidence: 99%

“…Electroless plating is an autocatalytic process, which is widely used for the production of uniform films in many industrial applications [1][2][3] . It has been reported that the Ni-P coatings prepared by electroless plating have some outstanding mechanical and chemical properties, such as good corrosion resistance, wear-resistance and high microhardness etc.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the Ni-P coatings containing fine dispersed ceramic particles have also attracted a great deal of attention in industrial area [13][14][15][16] . Some research results indicated that a combination of dissimilar materials, such as distributed nano-Al 2 O 3 , SiC, ZrO 2 , CeO 2 or Si 3 N 4 particles, can produce a coating with good chemical, mechanical, electrical, and optical properties [17][18][19][20][21][22][23] . Sintered NdFeB permanent magnet has a substantial drawback in corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

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Electroless Plating of Ni-P-W Coatings Containing Scattered Nb2O5 on Sintered NdFeB Substrate

et al. 2015

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“…The specimens were degreased in an alkaline solution for 2 minutes after polishing. The alkaline solution was composed of NaOH, Na 2 …”

Section: Materials and Pretreatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electroless Plating of Ni-P-W Coatings Containing Scattered Nb2O5 on Sintered NdFeB Substrate

et al. 2015

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“…In this way, the hardness and the performance of the tool were also developed. Jafari et al [4][5][6] produced an electroless nickel coating on the particles used in the high-velocity oxygen fuel (HVOF) process that reduces the porosity and increases the fracture toughness of the coating. Beyond this, the electroless nickel-boron coating was applied on the composites of liquid metal matrix composites [7].…”

Section: Introductionmentioning

confidence: 99%

Creation of Ni-B/Ni-P electroless coating on the WC particles without surface activator

et al. 2018

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One of the methods for improving metal-ceramic interface and suppression of agglomeration is the formation of a monolayer electroless coating on the particles. Investigations indicated that Ni-B monolayers should be first formed to develop in the next process an electroless Ni-P coating with the morphology of cauliflower. It was possible to produce a Ni-B layer on WC particles when a bath was heated at a temperature of 95 °C by using sodium borohydride and an appropriate stabilizer. Following this process, the Ni-P electroless coating was deposited on WC particles at 85 °C. In this way, two layers of electroless coating of Ni-B/Ni-P on the WC ceramic particles without using the surface activator were produced successfully. The coating morphology and surface analysis were performed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The results showed that only the degreasing with acetone as a surface preparation of ceramic particles is sufficient to make a Ni-P or Ni-B coating. Electroless Ni-B coating with appropriate adhesion to the surface produces an acceptable surface for the electroless Ni -P coating formation.

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“…Also reported is the use of electroless nickel coated ceramic powders, on which coatings obtained by thermal spray layers are placed, resulting in an improved wear resistance [14] [15].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Corrosion Resistance of NiCrFeBSi Coatings Obtained by Flame Thermal Spray Process Adding an Electroless Nickel Coating Ni-P

Barba-Pingarrón¹,

Valdez-Navarro²,

Jesús³

et al. 2017

JSEMAT

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Flame Thermal Spray (FTS) coatings frequently show some porosity and reduced adherence to substrate, which affect its properties, especially its corrosion resistance. In this work, the corrosion resistance of AISI 1018 carbon steel coated by different methods is compared: electroless nickel (EN) coating, NiCrFeBSi obtained by FTS, duplex coatings of an EN deposit on a layer of NiCrFeBSi obtained by FTS and a layer of NiCrFeBSi on an EN deposit. The coatings were characterized using optical microscopy and scanning electron microscopy techniques, EDS microprobe microanalysis, roughness as well as electrochemical polarization tests to obtain the corrosion rate. The results show the enhancement in the corrosion resistance in saline medium of the duplex coatings, especially of the EN coating on FTS layer.

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Microstructural and mechanical characterizations of a novel HVOF-sprayed WC-Co coating deposited from electroless Ni–P coated WC-12Co powders

Cited by 58 publications

References 39 publications

Electroless Plating of Ni-P-W Coatings Containing Scattered Nb2O5 on Sintered NdFeB Substrate

Electroless Plating of Ni-P-W Coatings Containing Scattered Nb2O5 on Sintered NdFeB Substrate

Creation of Ni-B/Ni-P electroless coating on the WC particles without surface activator

Enhancement of Corrosion Resistance of NiCrFeBSi Coatings Obtained by Flame Thermal Spray Process Adding an Electroless Nickel Coating Ni-P

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