This article mainly discusses the performance characteristics of silicon carbide ceramic and its application value.
In the 21st century, with the advancement of science and technology, information, energy, materials, and biotechnology have become the four pillars of productivity development in today's society. Silicon carbide, due to its stable chemical properties, high thermal conductivity, low thermal expansion coefficient, low density, good wear resistance, high hardness, high mechanical strength, and resistance to chemical corrosion, has seen rapid development in the materials field. It is widely used in ceramic ball bearings, valves, semiconductor materials, gyros, measuring instruments, aerospace, and other fields.
Silicon carbide ceramic has been developing since the 1960s, with silicon carbide previously mainly used for mechanical grinding materials and refractory materials. The world's countries attach great importance to the industrialization of advanced ceramics, and it is no longer just about preparing traditional silicon carbide ceramics; the development of enterprises producing high-tech ceramics is faster, especially in developed countries. In recent years, multiphase ceramics based on silicon carbide ceramic have emerged successively, improving the toughness and strength of individual materials. The main four application areas of silicon carbide are functional ceramics, high-grade refractory materials, abrasives, and metallurgical raw materials.
Silicon carbide ceramic exhibits excellent wear resistance.
This silicon carbide ceramic product has been researched and measured; its wear resistance is equivalent to 266 times that of manganese steel and 1741 times that of high-chromium cast iron. Its excellent wear resistance means that the product can significantly reduce equipment wear during use, thereby decreasing the frequency and cost of maintenance. This can save us a considerable amount of money. The silicon carbide ceramic can be used continuously for over ten years.
High strength, high hardness, and lightweight of silicon carbide ceramic
As a new material, silicon carbide ceramic boasts high strength and hardness, as well as exceptional lightness. This type of silicon carbide ceramic is particularly convenient for installation and replacement during use.
The interior wall of silicon carbide ceramic is smooth and does not clog powder material.
Silicon carbide ceramic is a product that is fired at high temperatures, resulting in a dense structure and a smooth surface. This enhances its aesthetic appeal, making it even more suitable for household use where appearance is a priority.
Silicon carbide ceramic is cost-effective.
Silicon carbide ceramic is a product with relatively low manufacturing costs, so the price we pay for silicon carbide ceramic doesn't need to be excessive. This way, it can also save quite a bit of money for our households.
Silicon carbide ceramic applications:
Silicon Carbide Ceramic Balls
Silicon carbide ceramic spheres offer excellent mechanical properties, superior oxidation resistance, high wear resistance, and a low coefficient of friction. These spheres maintain high strength at high temperatures, whereas conventional ceramic materials experience a significant drop in strength at temperatures between 1200 to 1400 degrees Celsius. In contrast, silicon carbide retains its bending strength at a high level of 500 to 600 MPa up to 1400 degrees Celsius, allowing for operation at temperatures as high as 1600 to 1700 degrees Celsius.
Silicon Carbide Composite Materials
SiC-CMC composite materials are widely used in the aerospace field for high-temperature thermal structures due to their high tensile strength, excellent toughness, and superior oxidation resistance. The preparation process of SiC-CMC involves fiber预制forming, high-temperature treatment, intermediate phase coating, matrix densification, and post-processing. High-strength carbon fibers have high strength and good toughness, and the preforms made from them possess excellent mechanical properties.
The mesophase coating (also known as interfacial technology) is a key technology in the preparation process. Methods for preparing mesophase coatings include Chemical Vapor Infiltration (CVI), Chemical Vapor Deposition (CVD), Gel-Sol Method (Sol-gel), and Polymer Infiltration and Pyrolysis (PLP). The CVI and PIP methods are suitable for preparing silicon carbide-based composites.
The materials for interface coatings include pyrolytic carbon, boron nitride, and boron carbide, with boron carbide gaining increasing attention as an antioxidant interface coating. SiC-CMC, commonly used under oxidizing conditions for extended periods, requires antioxidant treatment, which involves depositing a layer of dense silicon carbide approximately 100μm thick on the product surface via CVD, enhancing its high-temperature antioxidant properties.
Since silicon carbide ceramic is a relatively new product in recent years, not all consumers are well-versed in it. Some customers may have used silicon carbide ceramic but lack comprehensive knowledge. To enhance your understanding of this product, I'm here to introduce silicon carbide ceramic. With a better grasp of it, we can apply it more appropriately.
