Friction and Wear Characteristics of Electroless Ni-P-PTFE Composite Coatings.

Nishira, Masayoshi; Yamagishi, Kenji; Takano, Osamu

doi:10.4139/sfj.44.140

Cited by 12 publications

(3 citation statements)

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“…Ebdon [137][138] reported that the low coefficient of friction is due to the transfer of PTFE to the counter face material. The Ni-P-PTFE deposits [139][140] have lower average coefficient of friction (µ av ) compared to electroless Ni-P deposits, in both as-plated and heat treated (400°C/ 1 h) conditions and µ av is an inverse function of PTFE content. The deposits possess excellent lubrication properties in the range from very low temperature to 290°C.…”

Section: Hardness Friction Wear and Abrasion Resistancementioning

confidence: 99%

Electroless nickel, alloy, composite and nano coatings – A critical review

Sudagar¹,

Lian²,

Sha³

2013

Journal of Alloys and Compounds

771

367

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The development of metal deposition processes based on electroless nickel, alloy and composite coatings on various surfaces has witnessed a surge in interest among researchers, with many recent applications made possible from many excellent properties. In recent years, these coatings have shown promising corrosion and wear resistance properties and large number of newer developments became most important from macro to nano level 1 applications. After a brief review of the fundamental aspects underlying the coating processes, this paper discusses in detail about different electroless nickel alloy, composite, nano plating, bath techniques, preparation, characterization, new depositing mechanism and their recent applications, including brief notes on difficult substrate and waste treatment for green environment. Emphasis will be on to their recent progress, which will be discussed in detail and critically reviewed.

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Section: Hardness Friction Wear and Abrasion Resistancementioning

confidence: 99%

Electroless nickel, alloy, composite and nano coatings – A critical review

Sudagar¹,

Lian²,

Sha³

2013

Journal of Alloys and Compounds

771

367

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“…Composite electrodeposition, which codeposits fine particles such as oxides and organic compounds with metal matrixes, has been researched thoroughly, because it can endow materials with attractive properties such as corrosion resistance, [1][2][3][4][5][6] wear resistance, [7][8][9][10] and lubrication. [11][12][13][14][15][16] In the conventional composite electrodeposition, particles are codeposited with a metal matrix from a suspension containing insoluble solid fine particles. However, because the fine particles gather easily in an electrolytic solution, it is difficult to uniformly disperse the codeposited fine particles in the deposited films, which can cause several problems during electrolysis, such as the clogging of pipes because of the sedimentation of agglomerated particles.…”

Section: Introductionmentioning

confidence: 99%

Micro Structure and Corrosion Resistance of Zn Composites Films Produced by Pulse Electrolysis from a Insoluble Particle-free Solution Containing Zr Ions

Toyokuni,

Oue,

Taninouchi

et al. 2023

ISIJ Int.

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The electrodeposition of an Zn-Zr compound composite is performed under pulsed and double-pulsed current conditions at 313 K in unagitated pH 2 sulfate solutions containing Zn 2 + and ZrO 2 + ions and polyethylene glycol. Under constant-current electrolysis at 5 000 A•m − 2 , coarse granular partial deposits containing Zr compounds are observed. Under pulse electrolysis, such coarse deposits are observed rarely; however, both deposited films containing Zr compounds and exfoliated films are observed. On the contrary, in double-pulse electrolysis at high (5 000 A•m − 2 ) and low (500 A•m − 2 ) current densities, coarse deposits are not observed while fine-particle deposits containing Zr compounds are observed. In doublepulse electrolysis at low current densities, the rate of hydrogen evolution decreases and Zn is deposited without the codeposition of Zr compounds; therefore, the continuous hydrogen evolution is suspended in some areas. That is, the area of hydrogen evolution appears to be random. Although Zr compounds are usually concentrated at the upper regions of the deposited films, regardless of the electrolysis method, it is found to have been codeposited even in the inner regions under double-pulse electrolysis. The corrosion current density in 3 mass% NaCl solution is the smallest for the films produced by double-pulse electrolysis, when comparing with the films obtained by pulse electrolysis and constant-current electrolysis. This can be attributed to the suppression of the reduction reaction of dissolved oxygen.

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“…They also found that hardness depends on heat treatment. Nishira et al 23 found that suspension of PTFE particles in an electroless Ni-P bath was affected by non-ionic and cationic surfactants. Matsuda et al 24 found that PTFE particles were codeposited in electroless Ni-P plated film.…”

Section: Introductionmentioning

confidence: 99%

Studies on electroless nickel–PTFE composite coatings

Srinivasan¹,

John²

2005

Surface Engineering

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Electroless deposition of nickel based composites produces outstanding tribiological behaviour. These composite coatings are formed by addition to the electroless nickel solution of the material to be codeposited, in powder form, and by maintaining it in suspension during the deposition process so that it is incorporated into the deposit. The most commonly used hard dispersed compounds are SiC, diamond powder, alumina, TiC, BN, chromium carbide or WC. Recently, electroless nickel containing PTFE as a composite material has been used because it is uniform, highly adherent, hard wearing, dry lubricating, non-galling, has a lower coefficient of friction and good corrosion resistance properties. The present paper studies the effect of PTFE in an electroless Ni-acid bath on the rate of deposition, incorporation of PTFE and phosphorous content in the deposit, wear and corrosion resistance.

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Friction and Wear Characteristics of Electroless Ni-P-PTFE Composite Coatings.

Cited by 12 publications

References 0 publications

Electroless nickel, alloy, composite and nano coatings – A critical review

Electroless nickel, alloy, composite and nano coatings – A critical review

Micro Structure and Corrosion Resistance of Zn Composites Films Produced by Pulse Electrolysis from a Insoluble Particle-free Solution Containing Zr Ions

Studies on electroless nickel–PTFE composite coatings

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