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Manufacturing & Automotive 18-058

A novel tool surface treatment for wear and chipping improvements

An image of three drill bits that are coated with a soft metal coating for reduction of wear of the metal bits.
This soft metal tool coating provides exceptional tool life improvements in the machining of superalloy materials.

Tech ID



M. Aramesh

Patent Status

US Patent 11,389,879

Stage of Research

Experimentally verified
Data is available upon request


Glen Crossley
Associate Director
Business Development and Intellectual Property


Various types of cutting tools have been developed for removing material  from a workpiece. While some cutting tools are used in a cutting operation without a coating, others have a coating applied prior to use, to reduce friction, wear and failure.

During cutting very difficult to cut materials such as super alloys, tooling experiences severe seizure due to high thermal and mechanical loads, shortening tool life. Despite the use of super hard coatings, such severe conditions frequently lead to chipping and failure.

This technology employs a method of coating the tool with a soft metal coating that is capable of melting and functioning as an in-situ liquid lubricant during the machining operation. This liquid metal promotes the formation of beneficial tribofilms during high temperature machining of super alloys, significantly improving the tool’s resistance to wear and chipping compared to existing methods.


  • Machining of super alloys such as Inconel, used in aerospace and jet engines, oil and gas extraction, pollution control and waste processing, automotive, and marine industries


  • Significant tool life increase in the machining of super alloys
  • Decreased production time and costs
  • Increased production reliability and predictability

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