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Technology

 

EBC for Syngas and Reducing Environments

Ceramatec has worked on several Environmental Barrier Coatings (EBC), since 2001. Our coatings are applied using a dip coat method. Various ceramic coatings have been applied on numerous materials (substrates), including:

  • Incoloy 800
  • Waspalloy
  • 441 Alloy
  • SS 304, 316, 410
  • Haynes 160, 188, 230, 441, 556
  • Cast Iron
  • Oxides (MgO, Alumina, Zirconia, etc.)

The CTE of our top coat is comparable to super alloys. Further, they are stable n oxidizing and reducing environments (wet air and Syngas up to 1000+°C). We use nano- and micron particle oxide materials which are either made in-house or purchased commercially from vendors. Dopants can be added to alter functionality. This tailored approach leads to several benefits:

  • Increase transformation toughness
  • Improve adhesion
  • Match coefficient of thermal expansion (CTE)
  • Optimize thermochemical stability
  • Lower sintering temperatures

The advantages of Dip Coating are:

  • Simple process
  • Low-cost compared to EVD, EV-PVD, Plasma Spray
  • Apply on complex geometries/area hard to access
  • Customizable under/bond coating
  • Able to apply multiple coats

 

20x

80x

No Coat

One Coat

Two Coats

Automated Dip Coater

Under Layer

Coatings on alloy from left to right: MgZrO4, Co-MgO, Ni-MgO, Zr-MgO, Co-MgO, Ce-MgO, MgO, Zr-MgO, and bare alloy

Bare Alloy Under Magnification

Coated Alloy Under Magnification