High entropy materials were proposed and developed by Professor Jien-Wei Yeh in 1995. He named, defined, and elucidated “High-Entropy Alloys,” as well as established High-Entropy Materials Center to develop critical materials for smart machine, green technology, biomedical technology, and national defense. Alloys with high strength, corrosion resistance, and anti-bacterial capability are also developed for manufacturing knives, door handles, handrails, etc. to prevent infection during the post-epidemic era.

1. Non-sparking tools and stainless anti-bacteria copper knife
Non-sparking and beryllium-free high-strength medium-entropy alloy has been developed to substitute Cu-Be alloy for non-sparkling tools in consideration of the high cost and toxicity of beryllium. It can be also used in making knives and cutting boards having anti-bacteria function.
2. Bearing for oil well
High-entropy alloy with low cost and superior performance has been developed to replace high cobalt Stellite® 6 alloy for bearings used in submerged pumps in oil well.
3. Turbine engine
High-entropy superalloys have been developed to have superior strength, density, cost, ductility, and high-temperature strength over traditional superalloys. They can be used in turbocharger and turbine engine.

1. High-strength high-entropy copper alloy - Non-sparking tools and stainless anti-bacteria copper knife
It can be used in tool industries producing non-sparking hammers, wrenches, screwdrivers, pliers, and shovels. It can also be used in commodities industries producing anti-bacteria knives, forks, bowls, scissors for raw foods, straw, etc.
2. Extreme high-entropy alloy - Bearing for oil well
It can be used in industries including oil well, energy, machine, chemical plant, geothermal power plant, etc.
3. High-entropy superalloy - Turbine engine
It can be used for transportation industries producing drone, micro-turbine engine, generator, turbocharger, etc.

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