Zirconium is a chemical element with symbol Zr and atomic number 40. The name of zirconium is taken from the name of the mineral zircon, the most important source of zirconium. It is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. Zirconium is mainly used as a refractory and opacifier, although it is used in small amounts as an alloying agent for its strong resistance to corrosion. Zirconium forms a variety of inorganic and organometallic compounds such as zirconium dioxide and zirconocene dichloride, respectively. Five isotopes occur naturally, three of which are stable. Zirconium compounds have no known biological role.
Properties of Zirconium powder:
Appearance: Silvery White
Melting Point: 2128 K ?(1855 °C, ?3371 °F)
Boiling point: 4650 K ?(4377 °C, ?7911 °F)
Density near r.t.: 6.52 g·cm−3
Liquid, at m.p.: 5.8 g·cm−3
Heat of fusion: 14 kJ·mol−1
Heat of vaporization: 591 kJ·mol−1
Molar Heat Capacity: 25.36 J·mol−1·K−1
Applications of Zirconium powder:
Abrasives, Aerospace, Alloys ,Medical,Nuclear
1) Because of zirconium's excellent resistance to corrosion, it is often used as an alloying agent in materials that are exposed to corrosive agents, such as surgical appliances, explosive primers, vacuum tube getters and filaments.
2) 90% of all zirconium produced is used in nuclear reactors because of its low neutron-capture cross-section and resistance to corrosion. Zirconium alloys are used in space vehicle parts for their resistance to heat, an important quality given the extreme heat associated with atmospheric reentry.
3) Zirconium is also a component in some abrasives, such as grinding wheels and sandpaper.
4) Zirconium is used in weapons such as the BLU-97/B Combined Effects Bomb for incendiary effect.
5) Zirconium in the oxidized form is also used in dentistry for crowning of the teeth because of its biocompatibility, strength and appearance.
6) High temperature parts such as combustors, blades and vanes in modern jet engines and stationary gas turbines are to an ever increasing extent being protected by thin ceramic layers which reduce the metal temperatures below and keep them from undergoing (too) extensive deformation which could possibly result in early failure. They are absolutely necessary for the most modern gas turbines which are driven to ever higher firing temperatures to produce more electricity at less CO2. These ceramic layers are usually composed by a mixture of zirconium and yttrium oxide.
Diboride vanadium (VB2) has a hexagonal crystal structure, melting point of 2980 degrees Celsius, great hardness, resistance to oxidation temperature big 1000 degrees Celsius, can be used in areas such as conductive ceramic material, are atomic crystals.
Zirconium diboride (ZrB2) is a highly covalent refractory ceramic material with a hexagonal crystal structure. ZrB2 is an ultra high temperature ceramic (UHTC) with a melting point of 3246 °C. This along with its relatively low density of ~6.09 g/cm3 (measured density may be higher due to hafnium impurities) and good high temperature strength makes it a candidate for high temperature aerospace applications such as hypersonic flight or rocket propulsion systems. It is an unusual ceramic, having relatively high thermal and electrical conductivities, properties it shares with isostructural titanium diboride and hafnium diboride.
Hafnium diboride is an ultrahigh temperature ceramic composed of hafnium and boron. It has a melting temperature of about 3250 degrees Celsius. It is an unusual ceramic, having relatively high thermal and electrical conductivities, properties it shares with isostructural titanium diboride and zirconium diboride. It is a grey, metallic looking material. Hafnium diboride has a hexagonal crystal structure, a molar mass of 200.11 grams per mole, and a density of 10.5 grams per cubic centimeter.
Iron borides have properties of ceramics such as high hardness, and properties of metal properties, such as thermal conductivity and electrical conductivity. Boride coatings on iron are superior mechanical, frictional, and anti-corrosive.
Iron monoboride (FeB) is a gray powder that is insoluble in water. FeB is harder than Fe2B but is more brittle and more easily fractured upon impact. Iron monoboride is only made in single layer.
Iron boride (Fe2B) is a submicron and nanopowder that is also insoluble in water. They have been found to be superconductive and ultra-incompressible. It can be made in both single or double layer.
Applications of Iron Boride FeB powder
Boriding is often used to improve abrasion resistance, corrosion resistance, wear resistance, and oxidation resistance. It is used in oil and gas refinery, chemical extraction, automotive, agricultural, stamping, textile extrusion and injection molding industries.
Iron based coatings recently gained attention for their mechanical, frictional, and corrosion resistant properties. As compared to the ceramic or cermet type of materials people have used before, iron based materials are relatively inexpensive, less strategic, and can be produced economically by various thermal methods with ease of fabrication and machining.
AlB2 yield a solution having a reducing soluble in dilute hydrochloric acid, and the solution may contain HB (OH), is not soluble in sulfuric acid,but can be dissolved in nitric acid. Above 920 degrees AlB2 broken down into AlB12.
Aluminum boride is an ionic compound, with hexagonal crystal structure. Aluminum boride at absolute temperature slightly 40K (equivalent to -233 ¡æ) will be transformed into a superconductor. And its actual operating temperature is 20 ~ 30K. To reach this temperature, we can use liquid neon, liquid hydrogen or closed-cycle refrigerator to finish cooling. Compared to current industry using liquid helium to cool the niobium alloy (4K), these methods are more simple and economical. Once it is doped with carbon or other impurities, magnesium diboride in a magnetic field, or there is a current passing, the ability to maintain the superconducting is as much as niobium alloys, or even better.
superconducting magnets, power transmission lines and sensitive magnetic field detectors.
Aluminum boride nanopowder product should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition should avoid the heavy pressure, according to ordinary goods transportation.
Molybdenum boride powder MoB2 Application£º
It's mainly used as an additive of electronic tungsten, molybdenum alloy, etc., and can also be used in the manufacture of wear semiconductor thin film and coating materials.
Note: according to user requirements of nano particle can provide different size products.
Nickel Boride (Ni2B) is generally immediately available in most volumes. High purity, submicron and nanopfowder orms may be considered.
Storage conditions This product should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition should avoid the heavy pressure, according to ordinary goods transportation.
CAS No. : 12008-29-6 EINECS No.: 234-535-8 Appearance: dark grey
Molecular Formula: SiB6
Molecular Weight: 92.952
Feature: 1. Nano-silicon boride has high purity, small particle size distribution, high specific surface area. 2. The melting point up to 2230 °C. It can not be soluble in water and anti –oxidation and high resistance to chemical attack. especially in the high thermal impact and stability; 3. Grinding efficient of silicon boride is higher than that of boron carbide, it can be used as abrasives, grinding and engineering ceramics such as nozzles, gas turbine blades and other different sintering conditions and sealing line .
Ag powder Purity:99% or customized Ag powder Size:20-100nm or customized Ag powderColour: grey Ag powderCAS No.: 7440-22-4 Ag powderEINECS No.: 231-131-3
Features of Ag powder
Ag powder is a kind of metal silver with nano scale particle size. Most of the nano silver has particle size around 25 nm. According to the tests on Animals, there is no exhibition of being poisoned even if the dosage of silver nanoparticles is thousands of times used more than the standard dose. Meanwhile, it helps to repair the damaged epithelial cells. What worth to be mentioned is that the antibacterial effects of Nano silver powder become more enhanced when in water, which is more effective to the treatment of diseases. The experts believe that this nano silver anti-bacterial nanopowder can be widely used in the field of environmental protection, textiles and clothing, fresh fruit, food and health.
Application of Ag powder
Ag powder can be used as pharmaceutical antibacterial, disinfectant; some of countries use Ag powder for anti-AIDS drugs, mixed with zinc oxide powder for disinfection; Ag powder used as chemical catalyst. Also, Ag powder used as Antivirus antibacterial material: adding 0.1% silver nanoparticles, the inorganic antibacterial powder, can play an important role in the suppression and killing of dozens of pathogenic micro-organisms such as Escherichia coli, Staphylococcus aurous. Ag powder as a new anti-infective product which has broad-spectrum, non-resistance, free from the pH effects, antibacterial, durable, non-oxidized black and many other properties, Ag powder can be widely used in medical, household fabrics and health care supplies. Adding Nano Ag powder as antibacterial, anti-corrosion coating paint materials can also be used successfully in the construction and the preservation of relics. Manufacturers produce household items that utilize the antibacterial properties of silver nanoparticles. These products include nano-silver lined refrigerators, air conditioners and washing machines. Nano silver powder for Other current applications: Toys, Baby pacifiers, Clothing, Food storage containers, Face masks, HEPA filters, Laundry detergent. Conductive slurry: Ag powder are Widely used for wiring, encapsulation and connection in microelectronic industry, Ag powder play an important role in the minimization of electronic devices and circuits. Efficacious catalyst: silver nanoparticles can Greatly enhance the chemical reaction speed and efficiency, such as Ethylene oxidation. Biological pharmacy: Ag powder can be used in the cell dyeing and the gene diagnosis.