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HAFNIUM CARBIDE Suppliers list
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-66670886
Products Intro: Product Name:HAFNIUM CARBIDE
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Products Intro: CAS:12069-85-1
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: career henan chemical co
Tel: +86-371-86658258
Products Intro: Product Name:HAFNIUM CARBIDE
Purity:>=98% Package:1KG;1USD
Company Name: Hubei Jusheng Technology Co.,Ltd.
Tel: 86-18871470254
Products Intro: Product Name:hafnium,methane
Purity:99% Package:5KG;1KG
Company Name: Hebei Guanlang Biotechnology Co., Ltd.
Tel: +8619930503282
Products Intro: Product Name:hafnium carbide
Purity:99% Package:1PCS;1USD

HAFNIUM CARBIDE manufacturers

  • hafnium carbide
  • $1.00 / PCS
  • 2021-02-08
  • CAS:12069-85-1
  • Min. Order: 1KG
  • Purity: 99%
  • Supply Ability: 10 mt
  • $1.00 / KG
  • 2019-09-02
  • CAS:12069-85-1
  • Min. Order: 1KG
  • Purity: ≥98%
  • Supply Ability: 200kg
HAFNIUM CARBIDE Basic information
Description References
Synonyms:HAFNIUM CARBIDE;Hafnium carbide ceramics;hafnium(iv) carbide;HAFNIUM CARBIDE , 45 MICRON;Hafnium carbide, 99.5% (metals basis excluding Zr), Zr <1%;HAFNIUM(IV) CARBIDE, <1.25 MICRON;HAFNIUM(IV) CARBIDE -325MESH;Hafnium Carbide, -325 Mesh
Product Categories:CarbidesChemical Synthesis;Catalysis and Inorganic Chemistry;Ceramics;Hafnium;Metal and Ceramic Science
Mol File:12069-85-1.mol
HAFNIUM CARBIDE Chemical Properties
Melting point 2930 °C(lit.)
density 12.2 g/mL at 25 °C(lit.)
RTECS MG4620000
form Powder
color Gray
Water Solubility it is insoluble in water.
Crystal StructureCubic, NaCl Structure
CAS DataBase Reference12069-85-1
EPA Substance Registry SystemHafnium carbide (HfC) (12069-85-1)
Safety Information
WGK Germany 3
HazardClass 4.1
PackingGroup III
MSDS Information
SigmaAldrich English
ALFA English
HAFNIUM CARBIDE Usage And Synthesis
DescriptionHafnium carbide (HfC) is a chemical compound of hafnium and carbon, which is one of the most refractory binary compounds known to man with a melting point of approximately 3900 ℃. Hafnium carbide powder is obtained by the reduction of hafnium oxide with carbon at 1800 to 2000℃, in which a long processing time is required to remove all oxygen. It possesses the highest melting point of any known binary alloy, because of which it has a variety of high-temperature applications. It is considered candidates for extremely high-temperature applications such as rocket nozzles and scramjet components. Hafnium carbide can also be used in hard coatings, often applied by processes such as plasma spraying. Besides, HfC structural foams can be fabricated into high temperature components or used as a thermal insulation material. It is also be used in ceramic industry.
Chemical Propertiesdark, 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]
UsesIt is an ideal metal in the manufacture of control rods for nuclear reactors.
UsesUsed for preparation of ultra-high temperature ceramics 1 Reactant in synthesis of hafnium-containing organometallic polymers 2 Additive in alloys 3 Used in coatings 4
UsesHafnium 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 MethodsHafnium 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
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