HAFNIUM CARBIDE
- CAS No.
- 12069-85-1
- Chemical Name:
- HAFNIUM CARBIDE
- Synonyms
- HAFNIUM CARBIDE;hafnium,methane;hafnium(iv) carbide;Hafnium monocarbide;Hafnium carbide HfC;Hafnium carbide/ 99+%;Hafnium carbide ceramics;Hafnium Carbide, -325 Mesh;Methanidylidynehafnium(1+);Hafnium(IV) carbide, 99.8%
- CBNumber:
- CB0124513
- Molecular Formula:
- CHf
- Molecular Weight:
- 190.5
- MOL File:
- 12069-85-1.mol
- Modify Date:
- 2024/10/28 16:48:35
| Melting point | 2930 °C(lit.) |
|---|---|
| Density | 12.2 g/mL at 25 °C(lit.) |
| RTECS | MG4620000 |
| form | Powder |
| color | Gray |
| Resistivity | 45.0 (ρ/μΩ.cm) |
| Water Solubility | it is insoluble in water. |
| Crystal Structure | Cubic, NaCl Structure |
| Exposure limits |
ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| InChIKey | NVDNLVYQHRUYJA-UHFFFAOYSA-N |
| CAS DataBase Reference | 12069-85-1 |
| EPA Substance Registry System | Hafnium carbide (HfC) (12069-85-1) |
| Modulus of Elasticity | 352 GPa |
|---|---|
| Poissons Ratio | 0.18 |
| Shear Modulus | 149 GPa, Calculated |
| Knoop Microhardness |
2000 - 2500, 50 g load 2260 - 3050, 100 g load |
| Vickers Microhardness | 1800 - 2500, 200 g load, single crystal |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS02 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H228 | |||||||||
| Precautionary statements | P210-P240-P241-P280-P370+P378 | |||||||||
| RIDADR | UN3178 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 4.1 | |||||||||
| PackingGroup | III | |||||||||
| NFPA 704 |
|
HAFNIUM CARBIDE price More Price(3)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 594636 | Hafnium(IV) carbide <1.25?μm particle size | 12069-85-1 | 25G | ₹20589.15 | 2022-06-14 | Buy |
| ottokemi | H 9770 | Hafnium(IV) carbide, <1.25 μm | 12069-85-1 | 25gm | ₹67509 | 2022-05-26 | Buy |
| ottokemi | H 3915 | Hafnium(IV) carbide 99.8% | 12069-85-1 | 25gm | ₹9603 | 2022-05-26 | Buy |
HAFNIUM CARBIDE Chemical Properties,Uses,Production
Chemical Properties
dark, gray, brittle solid; fcc, a=0.4640 nm; high cross section for absorption of thermal neutrons; resistivity 8.8μohm· cm; most refractory binary material known; hardness 2300kgf/mm2; used in control rods of nuclear reactors; can be prepared by heating HfO2 with lampblack under H2 at 1900°C–2300°C; used in crucible form for melting hafnium oxide, other oxides [KIR80] [HAW93] [CER91]
Physical properties
Dark gray brittle solid, most refractory binary material known. Controls rods in nuclear reactors, crucible container for melting HfO and other oxides. 2 Corrosion resistant to liquid metals such as Nb, Ta, Mo, and W. Severe oxidation in air above 1100–1400°C and stable up to 2000°C in helium.
Uses
Hafnium carbide (HfC) with a melting point over 3890°C is a refractory binary compound. HfC and NbC can also be used as refractory coatings in nuclear reactors. The mixed carbide Ta4HfC5 possesses the highest melting point of any currently known compound at 4215°C.
Production Methods
Hafnium carbide is a dark gray, brittle solid. It can be
prepared by heating a mixture of the elements or by reacting
hafnium tetrachloride with methane at 2100 C. Sufficient
quantities of hafnium oxide or hafnium metal sponge are
obtained during the large-scale production of pure zirconium
for nuclear reactors. On an industrial scale, hafnium carbide
can be produced from the hydrided hafnium sponge at
1500–1700 ℃ or from hafnium oxide at 2000–2200 ℃ by
carburization in vacuo in the presence of hydrogen.
The resulting carbide contains almost the theoretical quantity
of carbon (6.30% °C) and a maximum of 0.1% free carbon
(219). The hafnium carbide obtained is not a true
stoichiometric compound as much as a solution of carbon
at specific interstitial sites of a face-centered cubic hafnium
lattice.
Hafnium carbide is inert to most reagents at room temperature
but is dissolved by hydrofluoric acid solutions.
Hafnium carbide reacts exothermally with halogens at
250–500 ℃to form hafnium tetrahalide, and to form hafnium
oxide with oxygen above 500℃. In the presence of hydrogen,
hafnium carbide slowly loses some of its carbon at higher
temperatures.
HAFNIUM CARBIDE Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5870 | 58 | Inquiry |
| Aritech Chemazone Private Limited | +91-9034345475 | Punjab, India | 684 | 58 | Inquiry |
| Nano Research Elements | 08048372588Ext 365 | Delhi, India | 101 | 58 | Inquiry |
| Sood Chemicals | 08048361240Ext 585 | Haryana, India | 65 | 58 | Inquiry |
| Kalapurna Steel & Engineer Private Limited | 09867783452 | Mumbai, India | 1 | 58 | Inquiry |
| Allegheny Technologies | 08048371898Ext 989 | Pune, India | 1 | 58 | Inquiry |
| N K Traders | 08066085994Ext 117 | Pune, India | 1 | 58 | Inquiry |
| Hebei Weibang Biotechnology Co., Ltd | +8615531157085 | China | 8813 | 58 | Inquiry |
| Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 | China | 12840 | 58 | Inquiry |
| Hebei Fengjia New Material Co., Ltd | +86-0311-87836622 +86-17333973358 | China | 8054 | 58 | Inquiry |
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