The technology uses cathodic arc deposition combined with electromagnet field controloptical emission spectroscopy (OES) for the deposition of new functional high entropy alloy (HEA) nitride coatings. The HEA nitride coatings possessed such high hardnessexcellent hydrophobicity with low surface energy which are beneficial for high speed dry cutting. Finally, the coatings were deposited on the micro end mills for cutting test of printed circuit board. The HEA ACZN coated tools can possess high wear resistanceoutperform the uncoated tools at least 4 times of tool lives.

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.

HEMC firstly developed high entropy superalloys with excellent corrosion resistancehigh temperature strength, which are far superior to commonly used stainless steelgreat candidates for catalyst bed materials of hybrid rocket engine. For rocket nozzle, NA-1NA-2 advanced refractory alloys are developed according to the combustion condition of the rocket engine with the technology for designing refractory high entropy alloysthermodynamics-assisted phase diagram simulation software, which are expected to meet the needs for domestic rocket development.

For the working places where have the risk of burningexplosion, non-sparking tools are important safety tools. They are made of hardest Cu-Be alloys. However, Be is very expensivepoisonous. To overcome this, we develop Be-free copper alloys which have high hardness for tools. In Taiwan, we have steel-tools industry. To have higher profit, it is promising to produce such Be-free non-sparking tools.

Novel alloys are composed of five special technologies (1)Development of CALPHAD phase diagram for medium entropy alloys(2)Development of novel lightweight Ti-rich medium entropy alloys with high strengthhigh ductility (YS 950 MPa, TS 1200 MPaEL 30)(3)Heterogeneous structures obtained by the thermomechanical treatment an rapid annealing treatment(4)Tailoring the heterogeneous structures to enhance the mechanical properties (YS 1240 MPa, TS 1510 MPa, 250 MPa·cm3/ga nd EL 25)(5)Commercial productions are produced by these large dimension alloys for further industrial application.

In the prior art of high-efficiency anode materials for lithium-ion batteries, we designed a high-entropy compositionmanufactured it through a simplemass production method. This technology inherits the cocktail effect of high-entropy alloys by combining highly active elementsmetal elements. This material can be manufactured by a simple mass production method. It shows high energy density, high Coulomb efficiencyhigh cycle stability,becomes a promising anode material for lithium-ion batteries.