The tribological characteristics of electroless NiP coatings

Taheri, Reza; Oguocha, I. N. A.; Yannacopoulos, S.

doi:10.1016/s0043-1648(01)00539-7

Cited by 84 publications

(47 citation statements)

References 16 publications

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“…Literature reports indicate that nickel is preferentially dissolved at the open circuit potential, thus leading to phosphorus enrichment on the surface of the coated substrate 40 . By reacting with water, hypophosphite ions are formed according to equation (1). The adsorbed hypophosphite layer has a blocking action on the coated surface, preventing nickel hydration due to a limited water supply which is reported to be the initial stage for the formation of soluble Ni 2+ or a nickel passive layer 41,42 .…”

Section: Corrosion Behaviormentioning

confidence: 99%

“…Electroless deposition of Ni-P alloys is traditionally employed to produce films with good adhesion to metallic substrates even with complex geometries, improving both wear and corrosion resistances of the coated surface 1,2 . Engineering applications are, therefore, well-established in several areas such as automotive, textile, chemistry and aeronautics industries 3 .…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Tungsten Content on Surface Properties of Electroless Ni-W-P Coatings

Oliveira

Corrêa

Ett³

et al. 2017

Mat. Res.

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Ternary Ni-W-P films were produced by electroless deposition using baths with different tungsten concentrations. After deposition, the coated surfaces were annealed at 400°C for 1h. Surface morphology and film composition in the as-plated condition were assessed by SEM and EDS analyses, respectively. The crystalline phases after annealing were investigated by X-ray diffraction (XRD). Nanoindentation tests were performed to assess the mechanical properties of the deposited films. Surface roughness was determined by confocal laser scanning microscopy (CLSM). Friction coefficient was evaluated by reciprocating were tests in a nanotribometer. The corrosion behavior was evaluated by potentiodynamic polarization curves. The results showed that the surface morphology, crystallization behavior and corrosion resistance were affected by the tungsten content in the film. The best corrosion performance was obtained for the ternary films after annealing. Hardness, surface roughness and friction coefficient were dependent of the tungsten concentration in the film.

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Section: Corrosion Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the Tungsten Content on Surface Properties of Electroless Ni-W-P Coatings

Oliveira

Corrêa

Ett³

et al. 2017

Mat. Res.

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“…Elektroles nikel posfor (ENP) banyak diaplikasikan dalam industri untuk melapisi valve, peralatan medis, dan silinder hidrolik karena sifat mekanik dan fisiknya yang unggul serta kemampuannya dalam mencegah keausan dan korosi [6][7][8][9][10]. Sifat dan strukturmikro ENP tergantung pada kadar unsur posfor pada lapisan yang terbentuk dan perlakuan panas setelah proses elektroles selesai dilakukan.…”

Section: Pendahuluanunclassified

“…Kadar posfor tinggi pada ENP mengindikasikan keunggulannya dalam mencegah korosi, tetapi kekerasan dan ketahanan aus nya lebih rendah dibanding ENP dengan kadar posfor rendah [6].…”

Section: Pendahuluanunclassified

PENGARUH SUHU DAN WAKTU PEMANASAN TERHADAP KARAKTERISTIK LAPISAN ELEKTROLES Ni-P PADA BAJA TAHAN KARAT MARTENSITIK SS 420

Nurhakim

Nikitasari

Mabruri³

2018

jsmi

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ABSTRAK PENGARUH SUHU DAN WAKTU PEMANASAN TERHADAP KARAKTERISTIK LAPISAN ELEKTROLES Ni-P PADA BAJA TAHAN KARAT MARTENSITIK SS 420. Telah dilakukan pelapisanelektroles Nikel-Posfor (Ni-P) pada baja tahan karat martensitik SS 420 dengan berbagai variasi suhu dan waktu perlakuan panas. Karakteristik lapisan elektroles Ni-P yang berupa strukturmikro dan ketahanan korosi dianalisis untuk mengetahui pengaruh variasi suhu dan waktu pemanasan. ABSTRACTEFFECT OF TEMPERATURE AND HEATINGTIME ON THE COATING CHARACTERISTICS OF MARTENSITIC SS 420 ELECTROLESS Ni-P. Electroless nickel phosphorus (Ni-P) coating has been done on the martensitic stainless steel SS 420 with a variety of temperature and heating time. Electroless Ni-P coating characteristics; microstructure and corrosion resistance were analyzed to determine the effect of variations in temperature and heating time. Variations in the temperature of the heat treatment used are 200

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“…Electroless Ni-P coating possess distinct structure and properties, depending on their phosphorus content. These deposits have a wide range of industrial applications including valves for fluid handling, medical equipment, and hydraulic cylinders owing to their excellent mechanical, physical, electrical, and corrosion and wear resistance properties [4,5]. Although electroless Ni-P deposits give satisfactory performance for several applications, enhancing their performance to suit different end uses warrants further development.…”

Section: Introductionmentioning

confidence: 99%