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ChroMiuM boride

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ChroMiuM boride Basic information

Product Name:
ChroMiuM boride
Synonyms:
  • chromiumboride(crb2)
  • CHROMIUM DIBORIDE
  • CRB2
  • CRB2 K
  • Chromium diboride,(99.5% Cr)
  • Chromiumdiboridemeshpowderavgmicronsorless
  • CHROMIUM DIBORIDE, -325 MESH, 99+%
  • ChromiumBoride,99%
CAS:
12007-16-8
MF:
B2Cr
MW:
73.62
EINECS:
234-499-3
Product Categories:
  • Borides
  • Ceramics
  • Metal and Ceramic Science
Mol File:
12007-16-8.mol
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ChroMiuM boride Chemical Properties

Melting point:
1550°C
Density 
5.15
storage temp. 
-20°C
form 
Powder
color 
Gray
Water Solubility 
It is insoluble in water.
Crystal Structure
Hexagonal a = 292.9 pm c = 306.6 pm C32, hP3, P6/mmm, AlB2 type (Z = 1)
Exposure limits
NIOSH: TWA 0.0002 mg/m3
Stability:
Strongly corroded by molten metals such as Mg, Al, Na, Cu, Si, V, Cr, Mn, Fe, and Ni; corrosion resistant to liquid metals Cu, Zn, Sn, Rb, and Bi
CAS DataBase Reference
12007-16-8(CAS DataBase Reference)
EPA Substance Registry System
Chromium boride (CrB2) (12007-16-8)
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Safety Information

WGK Germany 
3
TSCA 
Yes

MSDS

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ChroMiuM boride Usage And Synthesis

Chemical Properties

-150, +325 mesh with 99.5% purity; refractory material; high melting point, very hard, very high corrosion resistance; used as metallurgical additive and as a sputtering target to produce films, which can be wear-resistant and semiconducting [KIR78] [HAW93] [CER91]

Uses

Chromium boride,is been used in plasma technology and for high-performance electrodes in electron microscopes, metal matrix composites (MMCs), cutting tools and cermets for machining aluminum. chromium diboride is recognised as offering superior performance in corrosive-wear environments. Chromium diboride thin films possess desirable combinations of properties, which are attractive for a wide range of potential industrial applications. As a wear-resistant component of weld materials and powders for spraying in engineering and metallurgy, Protection of outer surfaces and bearing surfaces of machine parts against abrasive wear by plasma spraying, In aluminum evaporators manufacturing and for aluminum electrolyzes repair work, In nuclear engineering as neutron absorption material.

Flammability and Explosibility

Not classified

Industrial uses

Chromium boride occurs as very hard crystallinepowder in several phases: the CrBorthorhombic crystal, the hexagonal crystalCr2B, and the tetragonal crystal Cr3B2. Chromiumboride parts produced by powder metallurgyhave a specific gravity of 6.20 to 7.31,with a Rockwell A hardness of 77 to 88. Theyhave good resistance to oxidation at high temperatures,are stable to strong acids, and havehigh heat-shock resistance up to 1316°C. Thetransverse rupture strength is from 552 to 931MPa. CrB is used for oil-well drilling. A sinteredmaterial, used for gas-turbine blades, contains85% CrB with 15% nickel binder. It hasa Rockwell A hardness of 87 and a transverserupture strength of 848 MPa.

ChroMiuM borideSupplier

Alfa Aesar
Tel
400-6106006
Email
saleschina@alfa-asia.com
Beijing HwrkChemical Technology Co., Ltd
Tel
010-89508211 18501085097
Email
sales.bj@hwrkchemical.com
BeiJing Hwrk Chemicals Limted
Tel
0757-86329057 18934348241
Email
sales4.gd@hwrkchemical.com
Energy Chemical
Tel
021-021-58432009 400-005-6266
Email
sales8178@energy-chemical.com
Adamas Reagent, Ltd.
Tel
400-6009262 16621234537
Email
chenyj@titansci.com