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Hafnium Diboride (HfB₂)
Hafnium diboride is a gray, metallic-looking, ultrahigh-temperature ceramic composed of Hafnium and Boron. It has relatively high thermal and electrical conductivity and a melting temperature of about 3250ºC. The material’s oxidation resistance is temperature, and pressure dependent, where at 1500ºC and 1 atm of pressure, it shows resistance; however, at temperatures above 1600ºC and pressures drop below 1 atm, the oxidation resistance is dramatically reduced.
Purities available 99% to 99.99%
Purities available 99% to 99.99%
Chemical Composition
Hf= 89.195%
B= 10.804
Typical Applications
The material has potential for use in hypervelocity reentry vehicles, nuclear reactor control rods, and as a microchip diffusion barrier.
Packaging Options
Steel drums
Classification
Hafnium Diboride / Hafnium Boride TSCA (SARA Title III) Status: Listed
For further information, please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902.
Hafnium Diboride / Hafnium Boride Transportation: Not classified as a hazardous material by the DOT.
Hafnium DiBorid CAS Number: 12007-23-7
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