Journal of Material Sciences & Engineering

ISSN: 2169-0022

Open Access

Trindade VB

Redemat/Federal University of Ouro Preto,

  • Review Article
    Laser Cladding and Thermal Spray Coatings on Steel Pipe Serving the Oil and Gas Industry
    Author(s): Almeida NC, Candido LC, Faria GL, Fernandes de Lima MS and Trindade VBAlmeida NC, Candido LC, Faria GL, Fernandes de Lima MS and Trindade VB

    Different coating systems were characterized using a commercial API 5CT steel grade L80 type 1, which is commonly used in the oil and gas industry. Two Ni-based alloys and one Co-based alloy were deposited by laser cladding. Two coatings were deposited (Ni-based alloy and a composite W-C/Co-base) by means of thermal spray process. It has been shown the presence of a hard heat affected zone (HAZ) in the substrate for the as-laser deposited coating. The main explanation for this HAZ is devoted to the heat gradient causing a gradient on the prior austenite grain size and consequently different martensite hardness along the HAZ. For the thermal sprayed coatings, no HAZ was formed due to low heat input process. All the studied coating systems seem to be very interesting for different technically demanding applications, such as, stress sulfide corrosion and wear resistance... Read More»
    DOI: 10.4172/2169-0022.1000279

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