Mechanochemically Synthesized Hexagonal Osmium Diboride (OsB2) Ideal for Industrial Applications

Technology #32894

Questions about this technology? Ask a Technology Manager

Download Printable PDF

Image Gallery
The new hexagonal OsB2 can be used to create ceramic coatings for machine parts.
Categories
Researchers
Nina Orlovskaya, Ph.D.
External Link (mae.ucf.edu)
Zhilin Xie, Ph.D.
Richard Blair, Ph.D.
External Link (sciences.ucf.edu)
Managed By
Brion Berman
Sr. Licensing Associate 407.882.0342
Patent Protection

Mechanochemical synthesis of hexagonal OsB2

US Patent 9,701,542

Mechanochemical synthesis of hexagonal OsB2

US Patent Pending 2014/0219902
Publications
Novel High Pressure Hexagonal OsB2 by Mechanochemistry
Journal of Solid State Chemistry, Volume 215, July 2014, Pages 16-21

Hexagonal OsB2: New low-cost, ultra-hard ceramic material increases the stability and reliability of cutting tools and machinery parts

UCF researchers have created hexagonal osmium diboride (OsB2), a new, ultra-hard ceramic compound that, until now, had only existed in the form of a mathematical calculation. With its superior mechanical and functional properties, hexagonal OsB2 is ideal for use as a protective coating on cutting tools, pistons, turbine blades and other machinery parts. In creating the new composition, researchers also developed a novel, inexpensive and scalable method of producing it via mechanochemical synthesis.

Technical Details

The invention encompasses a composition for hexagonal OsB2 and a method of producing the new material by mechanochemically reacting osmium and boron powders using a high-energy ball mill. The compound’s hexagonal lattice structure can have a hardness value of 52±4 gigapascals (GPa) and a Young's modulus (stiffness) range of 561±38 GPa to 585±42 GPa. Ultra-incompressible, the compound undergoes negative thermal expansion at temperatures from 300 to 500 C in the direction of the lattice parameter, and it is stable at temperatures from about -223 C to 875 C upon cooling and heating. The mechanochemical synthesis is extremely energy efficient, with the mill consuming only 100 watts of power to produce 10 grams of material.

Benefits

  • Harder and more stable than other ceramic materials
  • Producible in bulk powder form
  • Methodology is scalable and provides significant energy and cost savings over other high-pressure and high-temperature solid-state synthesis methods

Applications

  • Wear-resistant and oxidation-resistant coatings for cutting tools, blades and other industrial parts
  • Abrasives

Additional UCF ID# 32904