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Cermet Materials for Intermediate Coating Layers

As composites of ceramic and metal materials, cermets act as intermediate materials that resolve thermal expansion mismatches in multiple layer, metallic-ceramic coating systems. They are the ideal solution to boost coating performance and life for applications involving severe thermal cycling.

Cermet Materials for Intermediate Coating Layers
Prevents Early Failure Resulting from Thermal Cycling

A "cermet" is a blend of metal-oxide ceramic (cer) and metal (met) materials. It controls thermal expansion mismatch between the substrate and the functional coating, and is applied as an intermediate coating between the metallic bond coat and the ceramic top coat. Cermets were originally designed for turbine applications, such as thermal barriers and thick clearance control coatings. However, this class of materials can be useful in many applications where severe thermal cycling can cause premature failure of a simple two-layer coating system.

Some common uses of cermet include:

  1. Cutting tools: Cermet is widely used in the manufacturing of cutting tools, such as drill bits, saw blades, and milling cutters. The material's high hardness and wear resistance make it ideal for cutting hard materials like metal, wood, and plastic.

  2. Wear-resistant coatings: Cermet is also used as a coating material to improve the wear resistance of various surfaces, such as engine components, turbine blades, and industrial equipment. The material's resistance to corrosion and erosion makes it ideal for protecting critical components in harsh environments.

  3. Aerospace applications: Cermet is used in the aerospace industry for its high strength-to-weight ratio, resistance to high temperatures, and corrosion resistance. It is used in the manufacturing of engine components, heat shields, and other critical aerospace parts.

  4. Electronics: Cermet is used in the electronics industry for its thermal conductivity and resistance to oxidation. It is used in the manufacturing of resistors and other electronic components.

Overall, cermet is a versatile material with many applications across various industries.

Your Single-source Material Supplier

We supply a variety of metal / ceramic powder blends for use with:

  • Alumina- and zirconia-based top coat powders
  • Nickel-, aluminum-, and chromium-based bond coat powders

We also supply the bond and top coat powder products, as well as leading edge thermal spray equipment, allowing you to obtain the entire coating system from a single, high-quality source. Contact us if you want to learn more by filling out the form below or find out more about us at Oerlikon here.