Peak-profile analysis of electroless nickel coatings

Martyak, Nichölas M.; Drake, Kerry

doi:10.1016/s0925-8388(00)01099-9

Cited by 63 publications

(45 citation statements)

References 10 publications

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“…A reduction in ceramic peaks intensity of XRD patterns after metallic coating was also observed by Zhu et al [19]. It should be noted that broadening of the XRD reflections in this regard is mainly due to the crystallite size component and not the strain [18].…”

Section: Resultssupporting

confidence: 71%

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Effect of electroless coating parameters and ceramic particle size on fabrication of a uniform Ni–P coating on SiC particles

Khosroshahi

Mousavian

Brabazon

2014

Ceramics International

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The formation of a uniform nickel phosphorous (Ni-P) electroless (EL) coating on micronsized SiC particles was investigated in this study. Metal coated ceramic particles could be used in applications including as the fabrication of cast metal matrix composites.Such ceramic particles have a better wettability in molten metal. In this work, the effects of EL coating parameters, SiC particle size and morphology on the coating uniformity and mechanical bonding at the SiC/Ni-P interface were studied. The results indicated that etching treatment was very effective (especially for coarse powders) on the mechanical bonding at the interface. Theoptimum values of bath temperature and pH were determined to be 50+_2 0 C and 8+_0.2, respectively. The best uniformity and mechanical bonding were obtained for SiC particles with average particle size of 80 μm (considered relatively as coarse powders in this study). The ball milling of SiC particles (with the average particle size of 80 μm) for 1 h led to the formation of a multi-modal particle size distribution which resulted in a non-uniform quality of particulate coating. The larger SiC particles after ball milling were more completely covered by the Ni-P coating compared to the smaller more fragmented particles. The smaller ceramic particles processed via Ni-P EL coating lead to formation of segregated clusters of Ni-P and therefore such ceramic particles contained many uncoated parts.

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Section: Resultssupporting

confidence: 71%

“…Previous researchers have indicated that the Ni-P coating is generally deposited in an amorphous form [10,11,17,18]. It seems that a much lower deposition rate for S 4 compared to S 2 (from variation in the pH and temperature), as shown in Fig.…”

Section: Resultsmentioning

confidence: 87%

Effect of electroless coating parameters and ceramic particle size on fabrication of a uniform Ni–P coating on SiC particles

Khosroshahi

Mousavian

Brabazon

2014

Ceramics International

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“…The corrosion resistance was determined by the equation given below (1) [21]. Where, Equation (1) wt is the equivalent weight, d is the density of the coating in g/cm 3 and Icorr is the corrosion current in µA/cm 2 .The base metal corrosion rate was high and has the value of 21.85mpy. The as-coated Ni-P and Ni-B samples corrosion rates were found to be 0.427mpy and 2.808mpy respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Electroless coating is to produce coating of Nickel alloys and composites and metalloids of Phosphorous or Boron. If the metalloids of Boron or Phosphorous present in Nickel matrix have less solubility they will be as supersaturated solutions of either boron or Phosphorous in Nickel matrix [3]. The metallic coating produced using electroless technique could be used with several configurations such as crystalline, amorphous or combination of both the nature [4].…”

Section: Introductionmentioning

confidence: 99%

Comparison of electroless Ni-P/ Ni-B on corrosion performance

Leon¹,

Jappes²,

Sahayaraj³

2018

IJET

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This research work compares annealed and as-coated electroless Ni-P's resistance to corrosion and electroless Ni-B coating prepared on the mild steel substrate. The coatings' resistance to corrosion was estimated by Tafel electro chemical polarization method utilizing electrochemical analyser in 3.5wt % solution of Sodium Chloride. Both the coatings' annealing temperatures were maintained at normal intervals to consider their corrosion resistance performance. Further, the corrosion behaviour of both the coatings with their as-coated and various annealed temperature were discussed for the deliberation of deposits phases, crystallite sizes and micro strain.

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“…The electroless-plating process and post-plating heat treatment determine the Ni-P coating composition and microstructure; this has attracted intense interest [4][5][6][7][8][9][10]. Amorphous Ni-P coatings are formed in electroless-plating when the P content is higher than 8% [11].…”

Section: Introductionmentioning

confidence: 99%

Electroless plating of Ni–P coatings on carbon steel in a stirred bed of glass balls

Ping

et al. 2008

J Appl Electrochem

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The electroless plating of Ni-P coatings was carried out in a stirred plating solution containing a bed of glass balls with a fixed stirring rate of 1,800 rpm. The diameters of the glass balls were 2 and 3 mm and the total weight of the balls was *200 g; the weight ratio of the 2 mm to the 3 mm balls was 3:2. The as-deposited Ni-P coating was composed of fine polycrystalline Ni grains and had a smooth appearance. The hardness and corrosion resistance of the novel coatings were considerably improved compared with the conventional electroless (CE)-plated amorphous Ni-P coatings. After heat treatment at 400°C for 1 h, cracks occurred in the CE-plated Ni-P coating, while no cracks appeared in the mechanically assisted electroless (MAE)-plated Ni-P coating. These improved properties of the MAE-plated Ni-P coatings demonstrate the advantages of this novel technique, which may find wide application in industry.

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Peak-profile analysis of electroless nickel coatings

Cited by 63 publications

References 10 publications

Effect of electroless coating parameters and ceramic particle size on fabrication of a uniform Ni–P coating on SiC particles

Effect of electroless coating parameters and ceramic particle size on fabrication of a uniform Ni–P coating on SiC particles

Comparison of electroless Ni-P/ Ni-B on corrosion performance

Electroless plating of Ni–P coatings on carbon steel in a stirred bed of glass balls

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