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Topic: Boron carbide


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  Surface modification of boron carbide to form pockets of solid lubricant - Patent 5075130
Boron carbide, one of the hardest and most durable materials known to man, has a hardness of approximately 45% that of the hardness of a diamond.
The boron carbide hard material which is found in close association with the nitrogen-implanted and annealed portion of the surface boron nitride would act as a wear resistant material to protect the lubricious boron nitride from abrading away.
This chemical bonding of boron and nitrogen near the surface of the boron carbide sample was further evaluated and ascertained using x-ray photoelectron spectroscopy with conventional 3 keV (kilo electron volts) argon sputtering.
www.freepatentsonline.com /5075130.html   (4278 words)

  
 Boron Carbide (B4C) - Properties and Information about Boron Carbide
Boron Carbide is one of the hardest materials known, ranking third behind diamond and cubic boron nitride.
Due to its high hardness, boron carbide powder is used as an abrasive in polishing and lapping applications, and also as a loose abrasive in cutting applications such as water jet cutting.
Boron carbide, in conjunction with other materials also finds use as ballistic armour (including body or personal armour) where the combination of high hardness, high elastic modulus, and low density give the material an exceptionally high specific stopping power to defeat high velocity projectiles.
www.azom.com /details.asp?ArticleID=75   (467 words)

  
  Dynamic Ceramic – Boron Carbide Engineering Ceramics - B4C
Boron Carbide tends to contain second-phase graphite and it is this property which has a major influence on the strength of the material.
Commercial boron carbide is produced by reacting and fusing boric oxide and carbon, in an electric arc furnace.
Boron carbide does not melt congruently, therefore the liquid in contact with the boron carbide, does not have the same composition as the solid.
www.dynacer.com /boron_carbide.htm   (252 words)

  
 Mudanjiang Jingangzuan Boron Carbide Co.,Ltd
Mudanjiang Jingangzuan Boron Carbide Co., Ltd, hereafter referred to as Jingangzuan (the former Mudanjiang Second Abrasive factory) established 1958 is specialized in producing a variety of Boron Carbide powders and Structural Ceramics on the largest quantity and the first-class quality with high reputation in China.
Depending on strong technical forces and advanced producing processes, we have possessed the production capacity of Boron Carbide powder is 2000 tons per year and of the structural Ceramic Components is 500,000 pcs per year.
As the first manufacturer to produce Boron Carbide, we have obtained great achievements for the development of Boron Carbide industry in China and possessed the advanced QLM-400 jet mill, the largest vacuum sintered furnace and the "Coulter" particle analysis instrument.
www.boroncarbide.com.cn /ejj.htm   (343 words)

  
 Boron, Si Carbide, & Specialty Reinforcements
Boron and Silicon carbide (SiC) are the most common of very high modulus reinforcements
A substrate filament, e.g., Tunsten for Boron, and Carbon for SiC
Boron fibers are consolidated with epoxy for prepreg uni tape or Al foil
www.csuchico.edu /~jpgreene/m247/m247_ch03/tsld039.htm   (96 words)

  
 boron carbide properties and applications   (Site not responding. Last check: )
Boron carbide is produced from boric acid or B2O3 and carbon containing materials in electric arc furnaces.
Boron carbide has a high neutron absorption cross section -- for thermal neutron is around 4,000 barns.
Boron carbide is one of the raw materials used in boriding agents.
www.concentric.net /~ctkang/b4c.shtml   (595 words)

  
 Boron Carbide
It is reported in the literature that the development of hard metal cutting tools and high speed steels could not have been possible without the availability of boron carbide as a grinding and tapping medium.
In aerospace industry, boron carbide, due to its capability to generate tremendous amount of heat (12400 kcal/kg) in combination with oxygen is finding use as a rocket propellant.
Purification of the ground boron carbide powder by leaching and washing.
www.barc.ernet.in /webpages/technologies/boron.html   (227 words)

  
 Boron Carbide, boron carbide Definition, reference, hard materials, refractory materials, strucrural ceramics, boron ...
Boron Carbide Description: The third hardest material known.
Boron carbide's extra hardness gives it the nickname "fl diamond".
Boron Carbide Electro Abrasives manufactures Boron Carbide to the finest powder, in custom sizes, to meet all our customers needs.
www.industry-metal.com /boron_carbide-447-1.html   (130 words)

  
 Boron Carbide Powder,Diamond Micron Powder,Boron Carbide Powder Supplier,Diamond Micron Powder Supplier,India
Boron Carbide Powder,Diamond Micron Powder,Boron Carbide Powder Supplier,Diamond Micron Powder Supplier,India
Boron carbide, a fl crystal powder, is one of the hardest man-made materials, its hardness with Mohs hardness 9.36 and micronscopic hardness 5400-6300kg/mm2 is only near to diamond, density is 2.52g/cm and melting point is 2450oC, boron carbide possesses properties of hi/low temperature endurance, non-reactive to acids or alkalis, high grinding efficiency and no magnetism.
Boron carbide also possesses the specialty properties of light quality, neutron absorbing, semi-conductivity, etc. So it is used for armed forces and nuclear industry.
www.indiamart.com /geepax   (666 words)

  
 Boron Nitride on ThomasNet.com
Boron with purity up to 99.5 percent available.
Company Profile: Distributor & supplier of boron nitride, aluminum oxide, silicon carbide, aluminum nitride, boron carbide & titanium diboride.
Company Profile: Boron & Silicon Carbide & Boron Nitride Powders.
www.thomasnet.com /products/boron-nitride-7030406-1.html   (815 words)

  
 Mudanjiang Jingangzuan Boron Carbide Co.,Ltd
Both silicon carbide and boron carbide components have been widely used in many industries such as: machinery petroleum chemical, ship, auto, aviation, aerospace, military and nuclear industry.
At present, Many developed industry countries are using boron carbide and silicon carbide components to replace components made of tungsten carbide and alumina.
Our boron carbide and silicon carbide of structural ceramics attribute to the new and high technology field.
www.boroncarbide.com.cn /y_chanpin2.htm   (226 words)

  
 Definition of boron carbide - Merriam-Webster Online Dictionary
C that is one of the hardest known materials and is used especially in abrasives and as a structural reinforcing material
Learn more about "boron carbide" and related topics at Britannica.com
See a map of "boron carbide" in the Visual Thesaurus
www.merriam-webster.com /dictionary/boron+carbide   (49 words)

  
 Boron Carbide - Hot-pressed - Goodfellow, online source, sources, small quantity,quantities
Boron Carbide - Hot-pressed - Goodfellow, online source, sources, small quantity,quantities
After Diamond, Cubic Boron Nitride and Boron Oxide, Hot pressed Boron Carbide has the highest hardness known.
Boron carbide has good resistance to acids but not to alkali hydroxide melts.
www.goodfellow.com /csp/active/static/A/Boron_Carbide_-_Hot-pressed.HTML   (155 words)

  
 Boron Carbide Powders : Grades Available
Boron Carbide Powder for Sapphire Slicing and Polishing Applications
Produces feed stock of Boron Carbide powder size 0-3 mm per UK Abrasives, Inc. material quality specifications.
On-premises Boron Carbide processing line (Jet Mill and Air Classifier), Sieving and Blending equipment.
www.ukabrasives.com /products/products5.html   (105 words)

  
 Vernon Devices manufactures honing tools for hand touch-up of Tungsten Carbide and high speed steel cutting tools and ...
Vernon Devices manufactures honing tools for hand touch-up of Tungsten Carbide and high speed steel cutting tools and grinding wheel dresser, Boron Carbide dressing stick.
For hand touch-up of Tungsten Carbide and high speed
• Sintered boron carbide grains are suspended in a tough matrix which resists grain pull-out
vernondevices.com /gritbits.htm   (139 words)

  
 Silicon Carbide- Alumina, Boron Carbide, Glass beads, Aluminum Oxide, Vibratory Media, Dermabrasion Crystals,Corn Cobb
Silicon Carbide- Alumina, Boron Carbide, Glass beads, Aluminum Oxide, Vibratory Media, Dermabrasion Crystals,Corn Cobb
range from Alumina, Black and Green Silicon Carbide for Refractory, Abrasive and High Purity applications, Brown and White Aluminum Oxide, ATH, Boron Carbide, Fumed Silica, Glass Beads for Milling, Blasting and Filtration.
Alumina, Silicon Carbide, Aluminum Oxide, Boron Carbide, Cerium Oxide, Glass Beads, Microdermabrasion Crystals, Vibratory Media, Vibratory Equipment, Sandblasting, Sandblasting Equipment, White Aluminum oxide, Brown Aluminum Oxide, Green Silicon Carbide, Black Silicon Carbide, ATH, Maize, Corn Cob, Walnut Shells, Filtration Media
www.unibrite.com   (313 words)

  
 ASTM C809-94(2007) Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of ...
1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade aluminum oxide and aluminum oxide-boron carbide composite pellets to determine compliance with specifications.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
C791 Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Boron Carbide
www.astm.org /DATABASE.CART/REDLINE_PAGES/C809.htm   (229 words)

  
 AEE - BORON CARBIDE B4C 55
Prices listed below are subject to change without notice due to market conditions.
boron carbide powder - all grit sizes available - inquire for pricing
Marketing Help from the designers of this site.
www.micronmetals.com /boron_carbide.htm   (33 words)

  
 malyn.com - boron carbide nozzles
LONGER LIFE - REDUCE DOWN TIME - LOWER COST PER USE - MAINTAIN EFFICIENCY
Boron Carbide nozzles are the longest lasting nozzles commercially available.
Boron Carbide costs more but will outlast tungsten carbide by 3-10 times
www.malyn.com /nozzle.htm   (54 words)

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