As a brittle and hard material, aluminum nitride ceramics are prone to brittle fracture during machining, which leads to a series of surface defects such as broken layer, brittle crack, residual stress, plastic deformation zone, etc. Ceramic substrate in LED devices and other applications mainly face the working conditions of the thermodynamic environment, so the above defects will greatly affect the performance of the substrate, reduce the stability and life of the device. Therefore, it is very necessary to achieve near-damage free machining of aluminum nitride ceramic substrate surface.
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At the heart of our article lies the remarkable power of Itowu nitride ceramics. We, Itowu, are proud to offer a range of nitride ceramics including boron nitride (BN), silicon nitride (SiN), and aluminium nitride (AlN), which deliver unmatched performance in diverse applications. Our ceramics possess unique characteristics such as excellent insulation, high thermal conductivity, elevated temperature resistance, corrosion resistance, and lightweight properties.
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Boron nitride (BN) is a compound composed of boron and nitrogen with a molecular formula of BN. It exists in various crystalline forms, each with unique properties and characteristics.
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Nitride ceramics are ceramics composed of nitrogen and metallic or non-metallic elements, including aluminum nitride, boron nitride, silicon nitride, etc. They are a class of important structural and functional materials. Nitride ceramics generally have characteristics of high hardness and high temperature resistance. The family of nitride ceramic materials is vast and has a wide range of applications. In order to maximize their effectiveness, the characterization of the raw material powders used during sintering is crucial.
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Bearings are the soul of all rotating machinery and are known as the "chip" of the mechanical industry. Their main function is to support the rotating parts of the machinery, reduce the friction coefficient during movement, and ensure rotational precision. The density of silicon nitride material is approximately 42% of bearing steel, with a high elastic modulus of 320 GPa, tensile strength of 1600 MPa, and compressive strength of up to 3600 MPa. Its mechanical properties remain almost unchanged below 900°C. Therefore, it is one of the ideal materials for rolling elements in rolling bearings. Currently, bearings with silicon nitride ceramic balls as rolling elements are the most researched, high-performance, and widely used high-end ceramic bearings in the world.
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