Metal, Ceramic or Composite Coatings on Metallic & Ceramic Powders

Materials Modification Inc. has developed a patent pending process called "Varicoat^TM", to produce composite powders with a layer of metallic, ceramic or polymeric coating on a wide range of materials.

The Varicoat^TM process involves dispersing metallic or ceramic powders in a liquid solution, followed by a chemical reaction under a controlled atmosphere. This results in a nanolayer coating. The advantages of the Varicoat^TM process are:

• Uniform coating of the powders,

• Coating thickness can be controlled,

• Consolidated parts exhibit improved mechanical, thermal, bio compatible and electrical properties,

• High density parts can be produced with minimum matrix segregation

Applications

• Thermal Management Substrates

• Armor and Anti-Armor materials

• Cutting Tools, Dies and Nozzles

• Additives for Structural Composites

• Biomedical Applications

• Magnetic materials

Thermal management substrates consolidated using copper coated molybdenum powders (Varicoat^TM technique) have higher thermal conductivity compared to copper infiltrated molybdenum substrates of the same composition.

The Varicoat^TM technique has been successfully applied to produce the following coated powders:

• Copper coated on various materials

• Nickel coated on various materials

• Cobalt coated on various materials

• Indium coated on various materials

• Polyethylene on various materials

Publications

• Nanosized WC-Co Holds Promise for the Future