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HAFNIUM CARBIDE

Description References
HAFNIUM CARBIDE
HAFNIUM CARBIDE structure
CAS No.
12069-85-1
Chemical Name:
HAFNIUM CARBIDE
Synonyms
hafnium,methane;HAFNIUM CARBIDE;hafnium(iv) carbide;Hafnium monocarbide;Hafnium carbide/ 99+%;Hafnium carbide ceramics;Hafnium Carbide, -325 Mesh;Methanidylidynehafnium(1+);HAFNIUM CARBIDE , 45 MICRON;Hafnium carbide powder (HfC)
CBNumber:
CB0124513
Molecular Formula:
CHf
Formula Weight:
190.5
MOL File:
12069-85-1.mol

HAFNIUM CARBIDE 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 Structure
Cubic, NaCl Structure
InChIKey
NVDNLVYQHRUYJA-UHFFFAOYSA-N
CAS DataBase Reference
12069-85-1
EPA Substance Registry System
Hafnium carbide (HfC) (12069-85-1)

Mechanical Properties

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
Hazard statements  H228
Precautionary statements  P210-P240-P241-P280-P370+P378a
RIDADR  UN3178
WGK Germany  3
TSCA  Yes
HazardClass  4.1
PackingGroup  III

HAFNIUM CARBIDE price More Price(4)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 594636 Hafnium(IV) carbide <1.25 μm particle size 12069-85-1 25g $242 2020-08-18 Buy
Alfa Aesar 012567 Hafnium carbide, 99.5% (metals basis excluding Zr), Zr <1% 12069-85-1 1g $16.5 2020-06-24 Buy
Alfa Aesar 012567 Hafnium carbide, 99.5% (metals basis excluding Zr), Zr <1% 12069-85-1 10g $53.1 2020-06-24 Buy
Alfa Aesar 012567 Hafnium carbide, 99.5% (metals basis excluding Zr), Zr <1% 12069-85-1 50g $235 2020-06-24 Buy

HAFNIUM CARBIDE Chemical Properties,Uses,Production

Description

Hafnium 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.

References

https://en.wikipedia.org/wiki/Hafnium(IV)_carbide
http://www.azom.com/article.aspx?ArticleID=2292
https://www.science.gov/topicpages/h/hafnium+carbides.html

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]

Uses

It is an ideal metal in the manufacture of control rods for nuclear reactors.

Uses

Used 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

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

Raw materials

Preparation Products


HAFNIUM CARBIDE Suppliers

Global( 93)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21807 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22623 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30032 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28230 58
Zhonglan Industry Co., Ltd.
(86) 531-82956570
(86) 531-82956571 sales@zhonglanindustry.com CHINA 4895 58
Hefei TNJ Chemical Industry Co.,Ltd.
18725517527 0551-65418671
0551-65418697 sales@tnjchem.com CHINA 37442 58
Forsman Scientific ( Beijing ) Co., Ltd. 18301106921 10-64646565
+86-10-6464 6568 info@forsman.com.cn China 692 58
Meryer (Shanghai) Chemical Technology Co., Ltd. 400-660-8290 21-61259100-
86-21-61259102 sh@meryer.com China 40268 62
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 821-50328103-801
86-21-50328109 3bsc@sina.com China 15880 69
Alfa Aesar 400-610-6006
021-67582001/03/05 saleschina@alfa-asia.com China 30163 84

View Lastest Price from HAFNIUM CARBIDE manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-08-30 HAFNIUM CARBIDE
12069-85-1
US $1.00 / KG 1KG ≥98% 200kg career henan chemical co

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