Titanium diboride(TiB2)
Titanium diboride (TiB2) is a material with high hardness, high melting point,
excellent conductivity, and heat resistance, making it widely used in various fields.
Application Scenarios
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Wear-resistant materials: The high hardness of titanium diboride makes it an ideal material for manufacturing cutting tools, abrasives, and wear-resistant components.
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Conductive ceramics: Due to its excellent conductivity, titanium diboride can be used as a conductive ceramic material in certain special electronic devices.
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Cutting tools: Adding titanium diboride during the manufacturing of cutting tools can enhance their durability and performance.
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Protective coatings: Due to its high melting point and excellent chemical stability, titanium diboride is commonly used as a protective coating on various material surfaces to improve wear resistance and corrosion resistance.
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Aluminum electrolytic capacitors: Titanium diboride is used as an anode material in aluminum electrolytic capacitors to enhance their performance.
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Atomic reactors: The high temperature resistance of titanium diboride makes it an ideal material for certain structural components in atomic reactors.
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Metal-ceramic composites: As a reinforcing phase, titanium diboride can be used in various metal-based composite materials to improve their overall performance, such as hardness, strength, and heat resistance.
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Aerospace: In the aerospace field, titanium diboride is used to manufacture engine components and other critical structures due to its lightweight, high strength, and high temperature resistance.
These application scenarios demonstrate the significant role of titanium diboride as a high-performance material in modern industrial and technological fields. With advancements in materials science, the application range of titanium diboride and its composites is expected to further expand.
Characteristics and Properties
Physical Properties
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High Hardness: Titanium diboride exhibits extremely high hardness, with a Vickers hardness exceeding 30 GPa, second only to diamond and cubic boron nitride.
High Melting Point: It has a very high melting point, approximately 3225°C (5847°F), enabling it to remain stable in extreme high-temperature environments. -
High Conductivity: Despite being a ceramic material, TiB2 displays good electrical conductivity, making it suitable for certain electrical applications.
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Good Thermal Conductivity: It also possesses high thermal conductivity, which is crucial for applications requiring rapid heat dissipation.
Chemical Properties
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Chemical Stability: Titanium diboride is highly stable against most acids and alkalis at room temperature, exhibiting excellent corrosion resistance.
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Oxidation Stability: While it can be oxidized at high temperatures, its oxidation rate is relatively low compared to many other materials.
Mechanical Properties
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Wear Resistance: The combination of high hardness and chemical stability imparts excellent wear resistance to titanium diboride.
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Fracture Toughness: Despite many superhard materials being prone to brittle fracture, titanium diboride exhibits relatively good fracture toughness.
Application Fields
These properties of titanium diboride enable its wide-ranging applications in various fields, including as a cutting tool material, wear-resistant material, conductive ceramics, anode material in aluminum electrolytic capacitors, and as a high-temperature structural material in aerospace, military, and nuclear reactors.
Preparation Methods
Titanium diboride is typically synthesized through high-temperature reactions, such as direct sintering using elemental powders