Hunan Yibeinuo New Material Co., Ltd.
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Product Description
Structural ceramics refer to advanced high-tech ceramic products that mainly utilize their mechanical, mechanical, thermal, and chemical functions in applications. This type of ceramics has a variety of excellent physical and chemical properties. Ceramic materials with high hardness, high strength, high wear resistance, and good heat resistance are widely used in aerospace, automobile manufacturing, machinery manufacturing, and other fields.
Product Features
High strength and hardness: The hardness of structural ceramics is mostly above 1500HV, and they have high strength, can withstand large mechanical pressure, and are not easy to deform or break.
High temperature resistance: Structural ceramics can maintain their excellent physical and chemical properties at high temperatures and are ideal materials for high-temperature structural components.
Wear and corrosion resistance: Structural ceramics have excellent wear and corrosion resistance and can operate stably for a long time in harsh environments.
Oxidation resistance: Structural ceramics are not easy to oxidize at high temperatures and have good corrosion resistance to a variety of chemical substances.
Technical parameters
| Items | Specifications | |
| Content of alumina | ≥95% | ≥99% |
| Density | ≥3.75 g/cm3 | >3.8g/cm3 |
| HV10 | ≥1200 | ≥1300 |
| Rock Hardness HRA | ≥85 | ≥90 |
| Bending Strength MPa | ≥330 | ≥340 |
| Compression strength MPa | ≥1200 | ≥1300 |
| Fracture Toughness KIc MPam 1/2 | ≥4.0 | ≥4.2 |
| Volume wear | ≤0.02cm3 | ≤0.02cm3 |
Types and Composition
Structural ceramics are mainly composed of single or composite oxides or non-oxides, such as aluminum oxide (Al2O3), zirconium oxide (ZrO2), silicon carbide (SiC), silicon nitride (Si3N4), etc., or these materials are combined or with carbon fiber. These materials are properly proportioned, crushed, formed, and calcined at high temperatures to form a hard ceramic substance.
Molding process
There are many molding processes for structural ceramics, including slip casting, plastic molding, and compression molding. Among them, dry pressing, tape casting, and ceramic injection molding are the more commonly used molding methods. These molding methods have their own advantages and disadvantages, and should be determined comprehensively based on the performance requirements, shape, size, output, and economic benefits of the product.
Dry pressing: The process is simple, the operation is convenient, the cycle is short, the efficiency is high, and it is easy to implement automated production. However, it is difficult to produce large blanks, the mold wear is large, the processing is complex, and the cost is high.
Cast molding: It can prepare blank films with smooth upper surfaces, which are suitable for preparing monolithic capacitor ceramics, thick film and thin film circuit Al2O3 substrates, etc. However, the binder content is high and the shrinkage rate is large.
Ceramic injection molding: It can directly form various small ceramic parts with complex geometric shapes and special requirements, with a high degree of mechanization and automation, a short molding cycle, and is suitable for mass production.
Application fields
Structural ceramics are widely used in various fields due to their excellent performance:
Aerospace: used to manufacture engine parts, thermal insulation materials, wear-resistant parts, etc. to improve the performance and reliability of aircraft.
Mechanical engineering: used to manufacture high-precision, high-wear-resistant parts such as cutting tools, bearings, and molds to improve the processing efficiency and service life of mechanical equipment.
Energy engineering: used to manufacture heat-insulating, heat-resistant, and wear-resistant parts such as thermocouple sleeves and furnace tubes to ensure the stable operation of energy equipment.
Petrochemical: used to manufacture corrosion-resistant parts, valves, crucibles, etc. to cope with harsh chemical environments.
Biomedicine: used to manufacture biomedical materials such as artificial bones and teeth to improve the quality of life of patients.
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