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Journal Article

Investigation of electroless Ni-P-SiC composite coatings

01 Jan 1997-Plating and Surface Finishing (American Electroplaters and Surface Finishers Society)-Vol. 84, Iss: 11, pp 77-81
TL;DR: In this article, the formation of the Ni 3 Si compound and wear mechanism of the composite coatings are discussed and structural analysis confirms that a new phase of Ni 3Si compound exists in the Ni-P-SiC deposits annealed at 650 °C for 1 hr.
Abstract: Electroless Ni-P-SiC composite coatings were investigated from the viewpoint of bath formulation, technology and coating properties. A sound and homogeneous deposit containing 25-30 vol. percent SiC can be produced, using an optimum bath formulation and technology. In comparison with Ni-P coatings, Ni-P-SiC composite coatings possess greater hardness and higher porosity, as well as lower adhesion and corrosion resistance. It is a significant advantage that the wear resistance of the composite coating is considerably increased. Heat treatment at high temperature can improve adhesion and wearability of the composite coating. Structural analysis confirms that a new phase of Ni 3 Si compound exists in the Ni-P-SiC deposits annealed at 650 °C for 1 hr. In this paper, formation of the Ni 3 Si compound and wear mechanism of the coatings are discussed.
Citations
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Journal ArticleDOI
TL;DR: 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 as mentioned in this paper.

680 citations


Cites background from "Investigation of electroless Ni-P-S..."

  • ...The particles like silicon carbide (SiC) ([103-105]), chromium carbide (CrC), zirconia or aluminum oxide (ZrO2, Al2O3), graphite and PTFE [106] have been investigated by many authors....

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Journal ArticleDOI
TL;DR: In this paper, the authors outline the development of electroless Ni-P composite coatings and highlight the method of formation, mechanism of particle incorporation, factors influencing particle incorporation and the effect of incorporation on the structure, hardness, friction, wear and abrasion resistance, corrosion resistance, high temperature oxidation resistance, and their applications.
Abstract: This review outlines the development of electroless Ni–P composite coatings. It highlights the method of formation, mechanism of particle incorporation, factors influencing particle incorporation, effect of particle incorporation on the structure, hardness, friction, wear and abrasion resistance, corrosion resistance, high temperature oxidation resistance of electroless Ni–P composite coatings as well as their applications. The improvement in surface properties offered by such composite coatings will have a significant impact on numerous industrial applications and in the future they will secure a more prominent place in the surface engineering of metals and alloys.

359 citations

Journal ArticleDOI
TL;DR: In this paper, an attempt has been made to review different electroless alloy/composite coatings with respect to bath types and their composition, properties and applications, with emphasis on wear and corrosion properties.
Abstract: Since the inception of electroless coating by Brenner & Riddell in 1946, it has been the subject of research interest and, in the past two decades, emphasis has shifted to the studies of its properties and applications. The co-deposition of paniculate matter or substance within the growing film has led to a new generation of electroless composite coatings, many of which possess excellent wear and corrosion resistance. This valuable process can coat not only electrically conductive materials including graphite but also fabrics, insulators like plastics, rubber etc. The low coating rates with these can provide better reflectivity of plated surfaces and many more applications. Coatings can be tailored for desired properties by selecting the composition of the coating alloy/composite/metallic to suit specific requirements. The market for these coatings is expanding fast as the potential applications are on the rise. In the present article, an attempt has been made to review different electroless alloy/composite coatings with respect to bath types and their composition, properties and applications. Different characterisation studies have been conducted on various electroless nickel-based coatings with emphasis on wear and corrosion properties.

322 citations


Cites background from "Investigation of electroless Ni-P-S..."

  • ...P–SiC (Apachiteiet al 1998b; Li 1997; Grosjeanet al1997), Ni–...

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  • ...P–SiC composite coatings containing 25–30 vol % SiC have been reported by Li (1997)....

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Journal ArticleDOI
01 Apr 2000-Wear
TL;DR: In this article, the effect of heat treatment, particle size and phosphorus content on the wear characteristics of composite electroless coating containing diamond particles was investigated and the results indicated substantial increase in wear resistance after the coated sample containing 9-10 wt% P content having fine diamond particle size is annealed around 350°C.

103 citations

Journal ArticleDOI
01 Jan 2006-Wear
TL;DR: In this article, the wear performance of Ni-P and B 4 C composite coatings was evaluated at 24°C, 35% moisture, 0.164m/s sliding speed and about 1000m sliding distance.

93 citations