Aluminum Oxide：Titanium Oxide 60:40wt%

Aluminum Oxide-Titanium Oxide (Al₂O₃-TiO₂) composite is a ceramic material combining the high hardness and thermal stability of aluminum oxide with the toughness and chemical stability of titanium oxide. This blend results in a versatile material ideal for applications requiring high wear resistance, thermal resistance, and stability. Aluminum Oxide-Titanium Oxide (Al₂O₃-TiO₂) composites are widely used in coatings, electronics, and structural ceramics, providing enhanced performance where durability and stability are crucial.

Composition:

Aluminum Oxide (Al₂O₃): Al₂O₃ serves as the primary component, contributing high hardness, thermal resistance, and electrical insulation, making it an excellent structural material for electronics and high-temperature applications.

Titanium Oxide (TiO₂): The addition of TiO₂ enhances the toughness and fracture resistance of the material, making the composite less brittle than pure Al₂O₃. TiO₂ also contributes to the material’s stability in harsh environments.

Physical and Mechanical Properties:

High Hardness: The Aluminum Oxide-Titanium Oxide (Al₂O₃-TiO₂) composite maintains the excellent hardness of aluminum oxide, making it highly resistant to abrasion and wear. This property is valuable for coatings and structural components.

Improved Toughness and Fracture Resistance: TiO₂ increases the toughness of the composite, improving resistance to cracking and mechanical stress. This added resilience is beneficial for applications exposed to dynamic or impact forces.

Thermal Properties:

High Thermal Stability: Aluminum Oxide-Titanium Oxide (Al₂O₃-TiO₂) composites can withstand high temperatures (up to about 1500°C or more), making them ideal for high-temperature coatings and components.

Moderate Thermal Conductivity: While Al₂O₃ provides excellent insulation, TiO₂ contributes moderate thermal conductivity, allowing the material to manage heat effectively in certain applications like thermal barriers.

Electrical and Optical Properties:

Electrical Insulation: The composite retains the high dielectric strength of aluminum oxide, making it suitable for insulating layers in electronic applications.

Optical Properties: Titanium oxide is known for its light scattering and opacity, making Aluminum Oxide-Titanium Oxide (Al₂O₃-TiO₂) composites useful in optical coatings where these effects are desired, such as anti-reflective or protective layers.

Chemical Stability and Corrosion Resistance:

Inertness to Chemical Attack: Al₂O₃-TiO₂ is highly resistant to chemicals, acids, and oxidation. This stability makes it suitable for use in corrosive environments or in applications where the material is exposed to aggressive chemicals.

Oxidation Resistance: TiO₂ enhances the composite’s resistance to oxidation, allowing it to maintain structural integrity in high-temperature, oxygen-rich environments.

Applications:

Thermal Barrier and Protective Coatings: Al₂O₃-TiO₂ is used in thermal barrier coatings for gas turbines, engines, and other components that operate under high temperatures. The composite’s durability and thermal resistance help protect the underlying surfaces.

Electronics and Semiconductor Coatings: The material’s insulating properties and stability make it suitable for electronic substrates, insulating layers, and thin films in semiconductor applications.

Optical and Anti-Reflective Coatings: Al₂O₃-TiO₂ is used in optical applications, particularly for anti-reflective and protective coatings in lenses, displays, and other precision optics.

Wear-Resistant Coatings: Due to its hardness and abrasion resistance, Al₂O₃-TiO₂ is applied as a wear-resistant layer on machinery parts, tools, and surfaces exposed to heavy use and friction.