Advantages of Silicon Carbide (SiC) Ceramic Pumps: Impact Resistance, High Efficiency, Long Lifespan, and Low Comprehensive Cost

Silicon Carbide (SiC) material, as a technologically mature wear-resistant material, boasts high hardness and stable molecular structure, exhibiting excellent wear and corrosion resistance, as well as high temperature resistance. It has been widely used in industries such as mining, metallurgy, power, and chemical engineering. In the field of internal and external slag slurry pumps, the working conditions are dominated by strongly corrosive and abrasive media, and the operating environment is harsh. This requires the materials of the flow passage components to possess good corrosion and wear resistance. Silicon carbide ceramics (including silicon carbide sintered ceramics bonded with silicon carbide and silicon carbide composite ceramics bonded with resin) are an excellent choice.

Silicon carbide ceramics are the most widely used metal-free ceramics in industrial ceramics and are a type of ultra-high temperature resistant ceramic. They exhibit high structural performance, which necessitates the refinement of the microstructure of silicon carbide materials. Therefore, the preparation of silicon carbide ceramic powder becomes a crucial step in producing high-performance silicon carbide ceramics.

Silicon carbide (silicon carbide), with the chemical formula SiC, belongs to covalent bond materials. Both C and Si belong to the same group and have tetravalent chemical bonds. Additionally, Si element also exhibits metallic properties. This substance, composed of two elements, exhibits a network-like and three-dimensional structure, and possesses high strength in nature. Therefore, the performance of silicon carbide material is characterized by good high-temperature strength, wear resistance, corrosion resistance, high thermal conductivity, and high insulation.

Main Components of Ceramic Pumps

Strong Corrosion Resistance of Silicon Carbide

● Excellent chemical stability, capable of resisting corrosion from almost all inorganic acids, organic acids, and alkalis, and possessing superior oxidation resistance.

● High wear resistance, 3-5 times that of high chromium wear-resistant steel;

● Excellent corrosion resistance, capable of withstanding various acids, alkalis, and chemicals except hydrochloric acid and hot concentrated alkali;

● Good impact resistance, able to withstand the impact of large particles of material and steel balls;

● Wide temperature range, suitable for long-term use from -40℃ to 90℃, with a maximum operating temperature of up to 110℃.

Strong Wear Resistance of Silicon Carbide

The crystal structure of silicon carbide is similar to the tetrahedral structure of diamond, and it is a compound formed mainly through covalent bonding. Its hardness is second only to diamond. According to comparative tests conducted by Xi'an Jiaotong University, its wear resistance is 3.51 times that of Cr30 wear-resistant steel.

Volume loss of different materials under the same abrasive environment

Application areas