HAFNIUM BORIDE
- Product Name
- HAFNIUM BORIDE
- CAS No.
- 12007-23-7
- Chemical Name
- HAFNIUM BORIDE
- Synonyms
- HafniuM borid;HAFNIUM BORIDE;HAFNIUM DIBORIDE;Hafnium boride HfB2;Hafnium boride powder;hafnium,λ2-boranylideneboron;Hafnium boride powder (HfB2);Hafnium boride, CAS 12007-23-7;Hafnium boride, 99% (metals basis);hafnium,λsup2sup-boranylideneboron
- CBNumber
- CB6408837
- Molecular Formula
- B2Hf-
- Formula Weight
- 200.11
- MOL File
- 12007-23-7.mol
HAFNIUM BORIDE Property
- Melting point:
- 3250°C
- Density
- 10.5
- form
- Powder
- Specific Gravity
- 10.5
- color
- gray hexagonal, hexane crystals, crystalline
- Water Solubility
- Insoluble in water.
- Crystal Structure
- Hexagonal
- Exposure limits
- ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 - InChI
- InChI=1S/B2H4.Hf/c1-2;/h1-2H2;/q-4;+3
- InChIKey
- VFOMGQXFCYKNAF-UHFFFAOYSA-N
- SMILES
- [B-2][B-2].[Hf+3]
- EPA Substance Registry System
- Hafnium boride (HfB2) (12007-23-7)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- H105358
- Product name
- HafniumBoride
- Packaging
- 500mg
- Price
- $60
- Updated
- 2021/12/16
- Product number
- ING0008403
- Product name
- HAFNIUM BORIDE
- Purity
- 95.00%
- Packaging
- 5MG
- Price
- $499.95
- Updated
- 2021/12/16
HAFNIUM BORIDE Chemical Properties,Usage,Production
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).
reaction suitability
reagent type: catalyst
core: boron
reagent type: catalyst
core: hafnium
Synthesis
A method of combustion synthesis of high purity hafnium diboride micropowder. The technical solution of the present invention is: the present invention is realized according to the following steps: First, the basic raw materials and diluent for dosing, the basic raw materials contain hafnium dioxide, boronic anhydride and magnesium powder, according to the weight percentage of: hafnium dioxide: 30% to 60%, boronic anhydride: 10% to 40%, magnesium powder: 15% to 50%, the diluent hafnium diboride added weight of the basic raw materials of 0 to 3 times; Second, drying, mixing; Third, the mixed raw material powder into the graphite boat, and then into the closed pressure vessel, closed pressure vessel using circulating water cooling, and keep the reaction under the pressure of 0 ~ 5Mpa protective atmosphere or vacuum conditions, ignition so that the raw material is self-propagating combustion and transformed into a product; Fourth, cooled to take out the product, the product is hafnium diboride and magnesium oxide mixture, acid washing to remove magnesium oxide, and then the hafnium diboride Water washing, filtration, drying, to get hafnium diboride powder.
HAFNIUM BORIDE Preparation Products And Raw materials
Raw materials
Preparation Products
HAFNIUM BORIDE Suppliers
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View Lastest Price from HAFNIUM BORIDE manufacturers
- Product
- Hafnium Diboride 12007-23-7
- Price
- US $0.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 1000kg
- Release date
- 2022-09-20
- Product
- HAFNIUM BORIDE 12007-23-7
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 85.0-99.8%
- Supply Ability
- 200kg
- Release date
- 2019-08-30