Structural and phase transformation behaviour of electroless Ni–P and Ni–W–P deposits

Palaniappa, M.; Seshadri, S.K.

doi:10.1016/j.msea.2007.01.134

Cited by 96 publications

(47 citation statements)

References 24 publications

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“…Palaniappa and Seshadri 13 showed that tungsten addition enhanced the wear resistance of electroless Ni-P coatings due to solid solution strengthening of the nickel matrix with the incorporation of tungsten. Furthermore, tungsten addition reduces the phosphorus content of the film and modifies its crystalline structure 14 . As a result, the corrosion behavior of Ni-W-P coatings depends on the tungsten content incorporated into the film.…”

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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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: 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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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In order to extend the properties of electroless Ni-P coating, the ternary nickel alloys were developed by co-deposition technology, in which the second metal salts were added to nickel solution, such as tungsten (W), 2,[21][22][23][24][25][26][27][28][29] chromium (Cr), [30][31][32][33] molybdenum (Mo), [34][35][36] copper (Cu), [37][38][39][40][41][42] tin (Sn). [43][44][45] Among of these ternary Ni-P-X alloys, the Ni-P-Sn alloy is reported having excellent corrosion resistance, heat-resistance and weldability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tin Addition on the Properties of Electroless Ni-P-Sn Ternary Deposits

Zou

Cheng

et al. 2010

Mater. Trans.

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In this study, the ternary Ni-P-Sn alloy coatings were prepared using electroless plating, and the effect of tin element on amorphous formation and anticorrosive properties of deposits in different corrosion medium were investigated. The different tin contents in deposits could be obtained by adjusting the amount of NaSnO 3 Á3H 2 O in plating bath. The X-ray results indicate that the small amount of tin addition can improve the formability of the amorphous phase. At the same time, the hardness of deposit decreases and the crystalline temperature shifts to lower temperature with increasing amount of Sn. The electrochemical corrosive experiments of deposits resulted that the addition tin improves the anticorrosion property in 3.5 mass% NaCl solution, but reduces the anticorrosion ability in sulfuric acid solution.

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“…3 shows the polarization curves recorded in raw juice. However, Tafel analysis was not conducted for determination of the corrosion rates since at least one decade of linearity on E-log I curves is desirable for maximum accuracy to determine i corr by Tafel extrapolation [14]. Lower current densities and more anodic E ocp values were recorded for AISI 316L.…”

Section: Results Of Measurements Conducted During 2009-2010 Campaign mentioning

confidence: 99%

Investigation of corrosion resistance of steel used in beet sugar processing juices

ADA

Altanlar²,

Erdem³

et al. 2016

Int J Ind Chem

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In this study, corrosion behaviors of materials used in diffusion units and equipment used in juice clarification steps and tubes in evaporators at Ankara Sugar Factory were investigated in terms of juice production and juice clarification processes as well as juice medium at evaporation stages. The measurements have been performed by comparing steel types used in these units and alternative types of steels that can also be used during the study. For this purpose, pH and Brix (Bx, refractometric dry matter) values of raw juice, thin juice and juice taken from evaporator have been measured during 2009-2010, 2010-2011, and 2011-2012 campaign periods of Ankara Sugar Factory. In addition to these measurements, traditional weight loss and electrochemical tests such as Linear Polarization Resistance (LP), Tafel Extrapolation (TP), Electrochemical Impedance Spectroscopy (EIS) were performed to measure and compare the corrosion rate of the metals used in different juice mediums. The metals included in the study were AISI 316L, AISI 304L grade stainless steel, St 37.2 grade carbon steel and nickel-coated St 37.2. The highest and the lowest corrosion rates were recorded for raw juice and thin juice, respectively. St 37.2 steel had the fastest corrosion rate, whereas the stainless steel AISI 316L has the slowest corrosion rate. However, AISI 316L shows only slightly higher corrosion resistance compared to the corrosion resistance of AISI 304L in different juices. Therefore, AISI 304L steel, which is cheaper than AISI 316L, can be selected as a substation of St 37.2 steel.

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Structural and phase transformation behaviour of electroless Ni–P and Ni–W–P deposits

Cited by 96 publications

References 24 publications

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

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

Effect of Tin Addition on the Properties of Electroless Ni-P-Sn Ternary Deposits

Investigation of corrosion resistance of steel used in beet sugar processing juices

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