High-temperature friction linings are specialized materials used in braking systems, clutches, and other applications where high temperatures are generated during frictional contact. These linings are designed to withstand elevated temperatures while providing reliable frictional performance, durability, and thermal stability. Here are some common types and features of high-temperature friction linings:

1. Ceramic Friction Materials:

   • Material: Ceramic friction linings are composed of ceramic fibers, binders, and fillers formulated to withstand high temperatures and provide consistent frictional performance.
   • Temperature Resistance: Ceramic linings can withstand temperatures ranging from several hundred to over a thousand degrees Celsius, depending on the specific composition and construction.
   • Features: Ceramic friction linings offer excellent thermal stability, low thermal conductivity, and resistance to wear, fade, and glazing. They are commonly used in high-performance racing cars, heavy-duty industrial machinery, and aerospace applications.

2. Carbon Friction Materials:

   • Material: Carbon friction linings are composed of carbon fibers, graphite, and binders engineered to provide high friction coefficients and thermal stability.
   • Temperature Resistance: Carbon linings can withstand temperatures ranging from several hundred to around 500°C (932°F), depending on the specific formulation and construction.
   • Features: Carbon friction linings offer high frictional stability, low wear rates, and resistance to fade and glazing. They are commonly used in automotive brake pads, clutches, and industrial braking systems.

3. Kevlar Friction Materials:

   • Material: Kevlar friction linings are composed of aramid fibers (e.g., Kevlar), binders, and fillers designed to provide high strength, flexibility, and thermal stability.
   • Temperature Resistance: Kevlar linings can withstand temperatures ranging from several hundred to around 300°C (572°F), depending on the specific formulation and construction.
   • Features: Kevlar friction linings offer excellent abrasion resistance, low wear rates, and resistance to fade and glazing. They are commonly used in automotive and motorcycle brake pads, clutches, and industrial friction applications.

4. Metallic Friction Materials:

   • Material: Metallic friction linings are composed of metal fibers, powders, and binders formulated to provide high friction coefficients and thermal stability.
   • Temperature Resistance: Metallic linings can withstand temperatures ranging from several hundred to around 700°C (1292°F), depending on the specific composition and construction.
   • Features: Metallic friction linings offer high thermal conductivity, excellent heat dissipation, and resistance to fade and wear. They are commonly used in heavy-duty industrial applications, such as mining equipment, cranes, and elevators.

High-temperature friction linings are critical components in braking and clutch systems, where they must withstand extreme temperatures and provide consistent performance under demanding operating conditions. When selecting a high-temperature friction lining for a specific application, factors such as temperature range, frictional characteristics, wear resistance, and compatibility with the mating surfaces should be considered to ensure optimal performance and safety.