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• Boron carbide's properties and chemical properties

  Boron carbide​, also known as Black Diamond, is an organic form. The molecular form IS B₄C. It is usually a grayish-black fine powder. It is one of the three hardest materials known (the others are diamond and cubic boron nitride) and is used in many industrial applications. It has a Mohs hardness of 9.3. So what are the properties and chemical properties of boron carbide?

  News February 01, 2022
• Rare earth nanomaterials' production technology

  At present, both production and application of nanomaterials have attracted the attention of all countries. China's nanotechnology has made continuous progress, in nano-level SiO2, TiO2, Al2O3, ZnO2, Fe2O3 and other powder materials, has been successful industrial production or trial production, but the existing production process, high production cost is its fatal weakness, will affect the promotion and application of nanomaterials, so we should continue to improve.

  News February 10, 2022
• What is chemical vapor deposition (CVD)?

  What are the main advantages and disadvantages of CVD? CVD uses one or more gases to chemically react on a heated solid substrate and to coat it with a solid film. Advantages: 1. Vacuum degree requirements are not high, even do not need vacuum, such as hot spray coating; 2. Rapid deposition rate, atmospheric CVD can reach 1μm/min; 3. Compared with PVD. Chemical composition or alloy coating is easier to achieve;

  News February 11, 2022
• High purity tungsten target material (chip manufacturing)

  High purity tungsten target​ is an important substrate for the transition of tungsten oxide film in semiconductor devices. Due to the high melting point of tungsten, tungsten targets are mainly prepared by powder metallurgy. The preparation method includes the purity of 99.999% or more, particle size of 3.2 4.2μm tungsten powder for uniform mixing, placed in the vacuum heat treatment furnace for pre-degassing, and then into hydrogen, continue heating degassing steps

  News February 09, 2022
• Nanomaterials' application in various fields

  Application of nanomaterials​ in various fields Nanomaterials have volume effect, surface effect, quantum size effect, macroscopic quantum tunneling effect and so on, which make them present characteristics that conventional materials do not have in electricity, magnetism, light and other aspects. Scientists and engineers have solved many technical problems by using the special properties of nanomaterials.

  News February 08, 2022
• Silicon carbide (SiC)：third generation semiconductor material

  Based on silicon devices on the design and development has undergone many generations of the structure and process optimization and renewal, is gradually close to the limit of the silicon material, based on the potential to improve the performance of silicon devices become more and more small to gallium nitride, silicon carbide​ as a representative of the third generation of semiconductor have excellent physical properties of materials in order to further improve the performance of the power electronics device provides a bigger space.

  News February 07, 2022
• Boride target and related parameters

  LaB6 target material, melting point 2230℃, density 4.7g/cm3, resistivity 15μ ω ·cm, Vickers hardness 27.7 Gpa. TiB2 target, melting point 2980℃, density 4.5g/cm3, resistivity 9~15μ ω ·cm, Vickers hardness 33.5 Gpa. ZrB2 target material, melting point 3040℃, density 6.1g/cm3, resistivity 7-10 μ ω ·cm, Vickers hardness 22.5 Gpa.

  News January 27, 2022
• What are the requirements of 3D printing on the performance of metal powder?

  What conditions do metal powders need to meet in order to meet the requirements of 3D printing materials? Ceramic inclusions will significantly reduce the performance of the final product, and these inclusions generally have a high melting point and are difficult to be sintered, so no ceramic inclusions must be in the powder.

  News January 28, 2022
• What are the material requirements for evaporation source in vacuum coating?

  Generally, the material and shape of the evaporation source should be considered. The general requirements of the evaporation source material​ are: The high melting point Because the evaporation temperature of the evaporating material (the temperature of the equilibrium vapor pressure of 1.3Pa) is mostly between 1000~2000℃, therefore, the melting point of the evaporating source material should be higher than this temperature.

  News January 26, 2022
• Silicon nitride ceramics' properties

  Silicon nitride​ (Si3N4) is a kind of ceramic material with high melting point and high hardness and chemical inertness. Hot-pressed silicon nitride, in particular, is one of the hardest substances in the world. Silicon nitride ceramics have low thermal expansion coefficient and high thermal conductivity, so they have excellent thermal shock resistance.

  News January 25, 2022