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LASER-BASED CLAD COATING TECHNOLOGY (LCCT)

LASER-BASED CLAD COATING TECHNOLOGY (LCCT)

Context:

Recently, Indian scientists have developed a unique laser-based clad coating (LCCT) technology that provides advanced protection to the boiler parts in thermal power plants.

Significance of LCCT:

  • It can extend the life of parts of the boiler by 2- 3 times compared to the technology currently in use.
  • It has been found that this technology is suitable, not only for boiler parts of thermal power plants but also for any engineering application involving high environmental temperatures and damage.

Laser Cladding:

  • It is a technique for fusing a coating material on a substrate.
  • It allows objects to be installed precisely, selectively, and with minimal heat input on the substrate.
  • This process allows for the development of material on the surface of a part, including better wear resistance, thus allowing for the repair of damaged or worn surfaces.
  • It is made by carefully combining a soft Nickel matrix containing particles of heavy carbide (tungsten, chromium, or vanadium) on steel parts by employing a high-power laser integrated into a multi-axis robot with process monitoring and control.
  • The control of the microstructure of the coating with manipulation of laser-heat for precise melting of hard carbide particles in the evenly distributed soft matrix under controlled dilution enabled this unique LCCT suitable for boiler parts of the thermal power plant as well as engineering applications involving high temperature erosive and corrosive environment. 

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