Tag: Chromium Silicide

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    What is Bismuth?

    Although bismuth was added by the Incas to a specific type of bronze alloy-cutting tool, it was not fully understood. It was frequently confused with silver, lead, and tin. Bismuth, which is Latin for "white substance", comes from German. However, the metal bismuth doesn't always look silvery-white. It also contains some pink. Jofroy & Bergman in England confirmed Bismuth to be a chemical element only in 1753.
    Bismuth has a peach-colored metallic shine. It emits yellow smoke from its flames, which produce a blue flame. Bismuth has an extremely low melting point of 271°. It is possible to melt bismuth in a small stainless steel pot at home and let it cool down. The bismuth actually expands upon freezing, much like water. A partial oxidation of its surface results in a rainbow-colored collection of crystals. This is due to different thicknesses of the oxide film on the bismuth crystal top.

    What is bismuth like to gold?
    It is twice as abundant as gold in the earth's crust, and one of the most rare metals. It is the number83 element in a periodic table and the heavyest element. It is sold on an international market for a mere few dollars per kilogram. It is extremely affordable compared to other fossil material.
    Bismuth was used to make boxes and other boxes in ancient Greece, Rome and beyond.

    How does bismuth achieve its iridescent sheen appearance?
    Due to the spiral step structure of the bismuth-crystal, the oxide film surrounding the outer edge is growing at a faster rate. It will interfere with light. Bismuth is often found as free metal and minerals in nature. When scientists heat bismuth to a high temperature, they can create bismuth oxide. This happens when the liquid is dissolved into bismuth. The polarized light rainbow that results from cooling the silver becomes bismuth. Complex and regular bismuth crystals are possible. The thickness of an outer oxide film that reflects different colors of bismuth determines its color. It is sometimes compared to lead which is often replaced with bismuth.

    Why bismuth?
    Bismuth has a density similar to lead and is less toxic than the former. Lead can cause kidney damage and headaches. Many children were killed by lead poisoning. Foreign hunters often replace the lead bullets in their hunting rifles by ammunition made of bismuth. Bismuth is used for killing animals.

    Bismuth's thermal and electrical conductivity are low. Bismuth has a melting temperature of 271.5 degrees Celsius.
    Bismuth crystals shine brighter than diamonds, and can be transformed into many arts and crafts. Bismuth can also be used in cutting edge technologies such as superconductors, nuclear testing, and other applications.

    The University of Delaware published a study that found a unique property of the metal bismuth. This can be used to produce liquid fuels and industrial chemicals. The team behind the project believes that this discovery could lead to a reduction in carbon dioxide emissions as well as a sustainable method of fuel production.
    Researchers call this new bismuth characteristic "catalytic plasticity". The researchers have previously demonstrated that bismuth films can also be combined with certain liquids to make carbon monoxide gaseous fuel. The new study concluded that electrifying bismuth film in salt solutions containing imidine ions and amidines ions regulates chemical reaction that convert carbon dioxide into industrial chemical formic acids or liquid fuel gasoline.
    According to general theory, chemical reactions can require different catalysts. But the "catalyticplasticity" of bismuth means that the metal bismuth is able to catalyze many kinds of chemical reactions. Researchers pointed out that technical aspects of the new findings, which made use of renewable energy sources like wind power and solar energy to promote direct production, metal bismuth catalyst plasticity, make researchers open a new work direction test. Researchers are expected develop renewable energy conversion, a new method of fuel production, and catalytic.

    Technology Co. Ltd. is a trusted global supplier and manufacturer of chemicals and Nanomaterials. They have over 12 years experience in producing super high-quality chemicals, such as silicon powder.
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    Hexagonal boron nitride, as a solid material, has incredible application potential in optics, biology and health sciences

    What is Hexagonal Borion Nitride? Hexagonal-boron Nitride (HBN) ceramics are essential microwave communication materials in aerospace. H-BN is a covalent compound that has a low selfdiffusion coefficient at high temperature and requires difficult sintering. It is most commonly prepared through hot pressing sintering. The hot pressing pressure and temperature can be very high. This makes it difficult to create complex-shaped ceramic products. Reaction sintering and high pressure gas-solid combustion are still options, but it is hard to get sintered products that are satisfactory in size and shape. Following mechanochemical activate with hexagonal Boron Nitride Powder, press-free sintering was done on H-BN ceramics in order to achieve 70% of the AlN ceramics' relative density.
    The characteristics and applications of hexagonal Boron Nitride
    Hexagonalboron nitride is a solid material that has amazing potential to be used in optics, biology, and other health sciences. This attracts more and more attention from around the globe. Professor Bernard Gil (National Centre for Scientific Research), as well as Professor Guillaume Cassabois from the University of Montpellier made important contributions to the physics of this fascinating material and to its ability to interact and control electromagnetic radiation. They have teamed up with James H. Edgar, Kansas State University USA to examine the use of hexagonal boron nutride in developing quantum information technologies. Professor Edgar has been working on advanced technologies to make high purity boron Nitride crystals.
    Hexagonalboron Nitride (hBN), a versatile solid material, plays an important role in many traditional applications. It can be used for lubrication, cosmetic powder formulations, thermal control, neutron detection, and other purposes. HBN, which was originally synthesized in 1842 from a fragile powder, has a layered structure that is different than graphite. This includes tightly bound B, N atoms that are superimposed in a network plan of weak interactions. A similar process can be used to make graphene from graphite, and monolayers of hBN. hBN actually sits at the intersections of two worlds. It is widely used in shortwave, solid-state light sources as well as layered semiconductors such a graphene and transition metallic halogens. Nevertheless, hBN exhibits distinct properties from both these classes of materials making it a potentially widespread candidate material.
    HBN crystal growth
    Since 2004, the field of hBN research and its application has seen a breakthrough in the form of new techniques to grow large (11.2 mm3) hBN single-crystals. Kansas State University's Professor Edgar and his colleagues have been key players in this area. They investigated the factors that influence the growth of crystals, their quality and eventual size, as also the effects on doping impurities or changing the boron ratio. HBN crystals are formed from solutions of molten elements, such as chromium or nickel, and can dissolve boron. Professor Edgar and collaborators demonstrated crystals made of pure boron have a higher quality than crystals made with hBN powder. They also examined the effects of gas composition, metal solvent selection, and crucible type upon the growth process.
    Additionally, the research team developed new techniques to produce isotopically pure HBN crystals. Natural boron can be described as a mixture of two isotopes, either boron-10 (20%) or boron-11 (80%). Although they have different nuclear masses, the chemical properties are identical and produce an indistinguishable structure for hBN. However, the LATTICE (or hBN) of an isotope has a significant effect on its vibration modes. These are also known as Phonons. Crystals with boron-10 or boron-11 have longer phonon lifespans. The crystal structure's random distribution of boron Isotopes causes phonon modes and their lifetime to disperse faster. The hBN has only one boron Isotope. Phonon scattering is decreased and the lifetime of phonons is extended. This reduces the hBN's thermal conductivity and makes it more efficient at dissipating warmth. Its optical characteristics are also very important, particularly in the field nanophotonics. This is the study of light reduced to dimensions below free space wavelengths. In this instance, the wavelength of light for h10BN has been reduced by 150.
    Quantum and HBN Information Technology
    Modern quantum technology relies on the ability of individual photons to be generated and manipulated. Single-photon sources emit light, unlike traditional thermal sources like incandescent lamps or coherent sources like lasers. These single-photon source emit light in the form single quantum particles (photons). They interact with other photons and can be used for storage and generation of new information in quantum computing. In some cases, single-photon source can be a defect in crystal structures caused by impurity and atoms. In the case hBN, the possibility of a high-density defect combined with a large range provides an opportunity for a support single-photon source. Quantum applications are significantly more spectral than pure nanophotonics, as they require higher sample purity.
    Photoluminescence experiments with hBN samples containing C and Si impurities showed that the spectral characteristics are significantly higher at 4.1eV light energy than pure hBN. Single-photon emission has been reported in recent cathode luminescence studies (in which phonon emissions are induced by an electronic beam), but it is not observed in laser-induced emit (photoluminescence). In photoluminescence experiments, many spectral lines lower than 4 eV have been seen. These may be due to single-photon emission defect in this energy range. These defects are still controversial. Although the phenomena of single-photon emitting hBN is complicated, the research of Professors Edgar Gil, Cassabois and Cassabois provides solid evidence of the extraordinary capabilities of this material in the field quantum technology.
    Hexagonal Boron Nitride supplier
    (aka. Technology Co. Ltd. (aka. Our company has developed a variety of materials. Our Hexagonal Boron Nitride BN Powder is high in purity, fine particle size, and has low impurities. Send us an email, or click on one of the products to send us an inquiry.

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