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Surface Preparation

  • Pierre L. Fauchais
  • Joachim V. R. Heberlein
  • Maher I. Boulos
Chapter

Abstract

Thermal spraying begins with proper surface preparation, which is absolutely essential. Steps must be undertaken correctly in order for the coating to perform the design expectation because coating adhesion quality is directly related to the cleanliness, the roughness and sometimes the proper machining for optimal coating performance. The coating material and the nature of the substrate are the major factors in determining what kind of surface preparation is necessary to achieve a resistant bonding. It is also important to keep in mind that the coating must never end abruptly at the part extremity. The different surface preparations comprise: machining, cleaning by various means, and masking preventing deposit formation on areas where it is not wanted. The surface roughening, characterized by different measurements, can be achieved by three main means: grit blasting, high pressure water roughening and laser treatment, which are described in details in this chapter. This description comprised the equipment, the main parameters and their action on surface roughness, with, for grit blasting the influence of the grit used (material and size).

Keywords

Plasma Torch Abrasive Particle Grit Size Type Machine Coating Adhesion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviation

BS

Bond strength

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Pierre L. Fauchais
    • 1
  • Joachim V. R. Heberlein
    • 2
  • Maher I. Boulos
    • 3
  1. 1.Sciences des Procédés Céramiques et de Traitements de Surface (SPCTS)Université de LimogesLimogesFrance
  2. 2.Department of Mechanical EngineeringUniversity of MinnesotaMinneapolisUSA
  3. 3.Department of Chemical EngineeringUniversity of SherbrookeSherbrookeCanada

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