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Prasanta Sahoo - One of the best experts on this subject based on the ideXlab platform.

  • Tribological Measurement of Electroless Nickel Coatings
    Materials Forming Machining and Tribology, 2018
    Co-Authors: Prasanta Sahoo, Arkadeb Mukhopadhyay
    Abstract:

    The tribological characteristics of Electroless Nickel coatings have been in focus since its inception. With the passage of time, Electroless Nickel coatings have proven to be a promising candidate as tribo-coatings. Electroless Nickel coatings have now evolved into a large family of functional coatings due to the flexibility of the process. Depending upon the need and cater into the rising industrial demands, different varieties of Electroless Nickel coatings have been deposited and evaluated. In fact, simulation of test conditions and test environments as per industrial demands has led to the investigation of the coatings on a variety of test setups. Different tribological measurement techniques employed to evaluate the coatings and the response of the coatings to the same are summarized. The present chapter gives a comprehensive overview of tribological measurements and evaluation methods related to surface roughness and friction/wear characteristics of Electroless Nickel coatings.

  • Electroless Nickel Coatings for High Temperature Applications
    Composites and Advanced Materials for Industrial Applications, 2018
    Co-Authors: Arkadeb Mukhopadhyay, Tapan Kumar Barman, Prasanta Sahoo
    Abstract:

    This chapter aims to discuss the evolution of Electroless Nickel coatings with respect to their tribological behavior with special emphasis on their applicability at high-temperature-based applications. Electroless Nickel coatings have tremendous potential as anti-wear and anti-friction coatings under ambient condition. The investigation of their tribological properties at high temperatures is relatively new. At demanding conditions, most conventional lubricants lose their properties and hence the use of self-lubricating coatings is unavoidable. Due to high melting point of Nickel and oxidation resistance, Electroless Nickel-based coatings may prove to be suitable candidate at high temperatures. A review and analysis of the tribological characteristics of Electroless Nickel coatings especially at high temperatures is therefore necessary and has been reported in this chapter. Future research directions for the improvement of coating properties at high temperature are also identified from the review.

  • Optimization Studies on Electroless Nickel Coatings: A Review
    International Journal of Manufacturing Materials and Mechanical Engineering, 2014
    Co-Authors: Sanjib Kundu, Prasanta Sahoo
    Abstract:

    Electroless Nickel coating is a novel method of coating which can be developed in various combinations of alloys and composites each having its unique set of characteristics. Electroless Nickel coatings are mainly used for wear and corrosion resistant properties. However, additional characteristics like smoothness of deposit, low friction, descent plating rate, electrical and magnetic properties also make them suitable for a host of applications. The properties of Electroless Nickel coatings depend mainly on the Electroless solution ingredients as well as deposition conditions. Important deposition parameters include bath temperature, concentration of Nickel source, concentration of reducing agent, pH of the solution, concentration of surfactants, and so on. Moreover, heat treatment is found to modify the microstructure of the coating and influence certain properties viz. hardness, wear resistance, corrosion resistance, etc. A large number of works have been published by the researchers on the evaluation of Electroless Nickel coating performance on the basis of hardness, roughness, corrosion resistance, friction and wear resistance for various types of coatings and substrates. Several approaches are proposed in the literatures to solve the problems related with optimization of these parameters. It is felt that a review of the various approaches developed would help to compare their main features and their relative advantages or limitations which will enable to choose the most suitable approach for a particular application and also throw light on aspects that needs further attention. In this regard, the present paper presents a review on the developments done on the optimization of Electroless Nickel coatings to increase its efficiency.

  • tribology of Electroless Nickel coatings a review
    Materials & Design, 2011
    Co-Authors: Prasanta Sahoo, Suma Das
    Abstract:

    Abstract Electroless coating is different from the conventional electrolytic coating as the former does not require any electricity for its operation. The advantages include uniform coating and also nonconductive materials can be coated. Electroless Nickel coatings possess splendid tribological properties such as high hardness, good wear resistance and corrosion resistance. For this reason, Electroless Nickel has found wide applications in aerospace, automobile, electrical and chemical industries. Quest for improved tribological performances has led many researchers to develop and investigate newer variants of Electroless Nickel coatings like Ni–W–P, Ni–Cu–P, Ni–P–SiC, Ni–P–TiO2, and so on. Also the enhancement of tribological characteristics through modification of the coating process parameters has remained a key point of interest in researchers. The technological advancement demands the development of newer coating materials with improved resistance against wear and tear. Electroless Nickel has shown huge potential to fit in that space and so the study of its tribological advancement deserves a thorough and exhaustive study. The present article reviews mainly the tribological advancement of different Electroless Nickel coatings based on the bath types, structure and also the tribo testing parameters in recent years.

  • Tribology of Electroless Nickel coatings – A review
    Materials & Design, 2011
    Co-Authors: Prasanta Sahoo
    Abstract:

    Abstract Electroless coating is different from the conventional electrolytic coating as the former does not require any electricity for its operation. The advantages include uniform coating and also nonconductive materials can be coated. Electroless Nickel coatings possess splendid tribological properties such as high hardness, good wear resistance and corrosion resistance. For this reason, Electroless Nickel has found wide applications in aerospace, automobile, electrical and chemical industries. Quest for improved tribological performances has led many researchers to develop and investigate newer variants of Electroless Nickel coatings like Ni–W–P, Ni–Cu–P, Ni–P–SiC, Ni–P–TiO 2 , and so on. Also the enhancement of tribological characteristics through modification of the coating process parameters has remained a key point of interest in researchers. The technological advancement demands the development of newer coating materials with improved resistance against wear and tear. Electroless Nickel has shown huge potential to fit in that space and so the study of its tribological advancement deserves a thorough and exhaustive study. The present article reviews mainly the tribological advancement of different Electroless Nickel coatings based on the bath types, structure and also the tribo testing parameters in recent years.

Suma Das - One of the best experts on this subject based on the ideXlab platform.

  • tribology of Electroless Nickel coatings a review
    Materials & Design, 2011
    Co-Authors: Prasanta Sahoo, Suma Das
    Abstract:

    Abstract Electroless coating is different from the conventional electrolytic coating as the former does not require any electricity for its operation. The advantages include uniform coating and also nonconductive materials can be coated. Electroless Nickel coatings possess splendid tribological properties such as high hardness, good wear resistance and corrosion resistance. For this reason, Electroless Nickel has found wide applications in aerospace, automobile, electrical and chemical industries. Quest for improved tribological performances has led many researchers to develop and investigate newer variants of Electroless Nickel coatings like Ni–W–P, Ni–Cu–P, Ni–P–SiC, Ni–P–TiO2, and so on. Also the enhancement of tribological characteristics through modification of the coating process parameters has remained a key point of interest in researchers. The technological advancement demands the development of newer coating materials with improved resistance against wear and tear. Electroless Nickel has shown huge potential to fit in that space and so the study of its tribological advancement deserves a thorough and exhaustive study. The present article reviews mainly the tribological advancement of different Electroless Nickel coatings based on the bath types, structure and also the tribo testing parameters in recent years.

Jian Ku Shang - One of the best experts on this subject based on the ideXlab platform.

  • degradation of solderability of Electroless Nickel by phosphide particles
    Surface & Coatings Technology, 2007
    Co-Authors: Aiping Xian, Jian Ku Shang
    Abstract:

    Wetting of Electroless Nickel by the eutectic SnAgCu solder alloy was investigated in the as-deposited and annealed conditions. In the as-deposited state, P content in the Nickel had a minimal effect on the solderability of the Electroless Nickel. Upon annealing, numerous Nickel phosphide particles precipitated out of the Electroless Nickel with a high-P content. The presence of these phosphide precipitates reduced the solderability of the Electroless Nickel both in terms of the wetting force and wetting kinetics. While weakening in the wetting force is related to the inferior contact condition, the slower wetting kinetics is explained in terms of the reduction in the dissolution rate of the Electroless Nickel from non-soluble phosphide particles. (c) 2007 Elsevier B.V. All rights reserved.

C. A. Loto - One of the best experts on this subject based on the ideXlab platform.

  • Electroless Nickel Plating – A Review
    Silicon, 2016
    Co-Authors: C. A. Loto
    Abstract:

    The operating process, versatility and the increasing research interest in optimising the process and products technology in the Electroless plating method of metal coating, particularly, the Electroless Nickel plating of metallic substrates such as mild steel, necessitates the writing of this review. It is also aimed at providing more literature information, both of the past and the present published research in this field. In this paper, Electroless Nickel plating is introduced. The various Nickel plating solutions and baths’ operating parameters; main types of Electroless Nickel plating; the mechanism involved in the plating process; application of the Nickel plating process to iron powders; advantages and disadvantages and the process’s other applications are reviewed. Electroless Nickel plating produces an amorphous deposit in the as-plated condition. The deposit is not dependent on current distribution and hence it is almost uniform in thickness. Electroless Nickel plating is far more difficult to remove chemically than conventional Nickel deposits due to its superior corrosion resistance. The deposit has a good wettability and is generally hard. However, its bath control is more complex than with electroplating. The bath also has lower efficiency and higher operating costs, even without the use of electricity.

  • Electroless Nickel plating a review
    Silicon, 2016
    Co-Authors: C. A. Loto
    Abstract:

    The operating process, versatility and the increasing research interest in optimising the process and products technology in the Electroless plating method of metal coating, particularly, the Electroless Nickel plating of metallic substrates such as mild steel, necessitates the writing of this review. It is also aimed at providing more literature information, both of the past and the present published research in this field. In this paper, Electroless Nickel plating is introduced. The various Nickel plating solutions and baths’ operating parameters; main types of Electroless Nickel plating; the mechanism involved in the plating process; application of the Nickel plating process to iron powders; advantages and disadvantages and the process’s other applications are reviewed. Electroless Nickel plating produces an amorphous deposit in the as-plated condition. The deposit is not dependent on current distribution and hence it is almost uniform in thickness. Electroless Nickel plating is far more difficult to remove chemically than conventional Nickel deposits due to its superior corrosion resistance. The deposit has a good wettability and is generally hard. However, its bath control is more complex than with electroplating. The bath also has lower efficiency and higher operating costs, even without the use of electricity.

S. S. Tulsi - One of the best experts on this subject based on the ideXlab platform.