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| | HAFNIUM BORIDE Basic information |
| Product Name: | HAFNIUM BORIDE | | Synonyms: | HAFNIUM BORIDE;HAFNIUM DIBORIDE;HAFNIUM BORIDE, 99.5% (METALS BASIS EXCLUDING ZR), ZR <2%;Hafnium boride, 99% (metals basis);Hafnium boride powder;HafniuM borid;Hafnium boride powder, -325 mesh, 99% trace metals basis;Hafnium boride, 99.5% trace metals basis excluding Zr | | CAS: | 12007-23-7 | | MF: | B2Hf- | | MW: | 200.11 | | EINECS: | 234-500-7 | | Product Categories: | | | Mol File: | 12007-23-7.mol |  |
| | HAFNIUM BORIDE Chemical Properties |
| Melting point | 3250°C | | density | 10.5 | | form | Powder | | Specific Gravity | 10.5 | | Water Solubility | Insoluble in water. | | Exposure limits | ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 | | InChIKey | VFOMGQXFCYKNAF-UHFFFAOYSA-N | | EPA Substance Registry System | Hafnium boride (HfB2) (12007-23-7) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26 | | WGK Germany | 3 | | TSCA | Yes |
| Provider | Language |
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ALFA
| English |
| | HAFNIUM BORIDE Usage And Synthesis |
| Chemical Properties | gray, hexagonal, crystal(s) solid, a=0.3141 nm, c=0.3470nm; can be prepared by heating HfO2+C+B2O3; hardness 2900 kgf/mm2; resistivity 8.8μohm· cm; used as a refractory material and as a sputtering target with 99.5% purity to produce films, which may be wear-resistant and semiconducting [HAW93] [KIR80] [CER91] | | Uses | Hafnium boride is used in wear resistant coatings. It is also employed as a nuclear reactor control rod. Furthermore, it is used in hypervelocity re-entry vehicles like ICBM heat shields or aerodynamic leading-edges. It is useful in the preparation of high temperature composites in conjunction with silicon carbide (SiC). |
| | HAFNIUM BORIDE Preparation Products And Raw materials |
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