Chromium diboride

Base Information

• Chemical Name: Chromium diboride
• CAS No.: 12007-16-8
• Deprecated CAS: 1615228-07-3,1821115-27-8
• Molecular Formula: B₂Cr
• Molecular Weight: 73.618
• European Community (EC) Number: 234-499-3
• Mol file: 12007-16-8.mol

Synonyms:Chromium diboride;Chromium diboride (CrB2);EINECS 234-499-3;LS-53415

Chemical Property of Chromium diboride

Chemical Property:

• Melting Point: 1550 °C
• PSA: 0.00000
• Density: 5.15
• LogP: -1.83240
• Storage Temp.: -20°C
• Water Solubility.: It is insoluble in water.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 73.959115
• Heavy Atom Count: 3
• Complexity: 0

Purity/Quality:

99.9% ^*data from raw suppliers

ChromiumBoride 99.5% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Metals -> Chromium Compounds, Inorganic
• Canonical SMILES: [B].[B].[Cr]
• 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.

Technology Process of Chromium diboride

There total 18 articles about Chromium diboride which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

chromium(VI) oxide + boron trioxide + aluminium (7429-90-5) → aluminum oxide (1333-84-2,1344-28-1) + chromium diboride (12007-16-8)

Guidance literature:

the mixture was placed in a refractory mold and burned under inert gas at 1-3500 atm; combustion temperature: 4100 K;; phase sepn. under the influence of gravitational forces;;

Reference yield:

lithium borohydride + chromium(III) chloride (10025-73-7,16284-59-6) → chromium diboride (12007-16-8) + hydrogen (1333-74-0) + diborane (19287-45-7)

Guidance literature:

In neat (no solvent); byproducts: LiCl, Cr, B; in a vibration ball mill at 25°C and 1.3 Pa; Kinetics;

Reference yield:

bis(octahydrotriborate) chromium(II) → chromium diboride (12007-16-8)

Guidance literature:

In neat (no solvent); passage of Cr(B3H8)2 over substrates heated to >200°C affords silvery metallic mirrors of highly pure CrB2;

DOI:10.1021/ja046906c

upstream raw materials:

chromium(III) chloride

sodium tetrahydroborate

aluminium

chromium

Refernces

• 1、 Kuznetsov, N. T.,Golovanova, A. I.,Kedrova, N. S.,Mal'tseva, N. N.,Shevchenko, Yu. N.. "". . p. 41 - 44. Retrieved 1986.
• 2、 Grechnev,Fedorchenko,Logosha,Panfilov,Svechkarev,Filippov,Lyashchenko,Evdokimova. "Electronic structure and magnetic properties of transition metal diborides". . p. 75 - 80. Retrieved 2009.
• 3、 Goedde, Dean M.,Girolami, Gregory S.. "A new class of CVD precursors to metal borides: Cr(B3H 8)2 and related octahydrotriborate complexes". . p. 12230 - 12231. Retrieved 2004.