Should brake pad adhesives be made of green silicon carbide, black silicon carbide, white corundum or brown corundum?
In the field of brake pad adhesives, green silicon carbide (GC) and brown corundum (A) are better choices, while black silicon carbide (C) and white corundum (WA) are less applicable. The specific analysis is as follows:
1. Detailed explanation of preferred materials
Green silicon carbide (GC)
Advantages:
Highest hardness (second only to diamond), excellent friction performance, can significantly improve the wear resistance of brake pads;
Strong chemical stability, still maintains performance at high temperature (＞1600℃), suitable for high-frequency heating environment of braking;
Concentrated particle size (such as F1000 mesh), can form a dense wear-resistant layer and reduce brake loss.
Application: Core material of wear-resistant layer of motor vehicle/aircraft brake pads.
Brown corundum (A)
Advantages:
High toughness, can withstand greater pressure, and improve the structural strength of brake pads;
Outstanding cost-effectiveness, lower cost than white corundum, suitable as reinforcing filler.
Application: Added to adhesives to enhance friction stability and extend life.
2, secondary or unrecommended materials
Black silicon carbide (C)
The hardness is close to that of green silicon carbide, but the toughness is lower. It is mainly used for processing low-strength materials such as glass and ceramics. It is easy to break in brake pads due to brittleness.
White corundum (WA)
High hardness but poor toughness, mainly used for precision grinding (such as metal polishing), lacking the impact resistance and friction stability required for brake pads.
3. Comprehensive recommendations
Green silicon carbide is the first choice: used for the wear-resistant layer on the surface of the brake pad, directly improving the braking performance and durability;
Brown corundum is used as a composite filler to enhance the toughness of the matrix and optimize the cost;
Avoid black silicon carbide/white corundum: the former is mismatched in application scenarios, and the latter does not meet the requirements.
Key points: Brake pad adhesives need to balance hardness, toughness, and temperature resistance. The combination of green silicon carbide + brown corundum can cover the core needs while ensuring economy.
In the field of brake pad adhesives, green silicon carbide (GC) and brown corundum (A) are better choices, while black silicon carbide (C) and white corundum (WA) are less applicable. The specific analysis is as follows:
1. Detailed explanation of preferred materials
Green silicon carbide (GC)
Advantages:
Highest hardness (second only to diamond), excellent friction performance, can significantly improve the wear resistance of brake pads;
Strong chemical stability, still maintains performance at high temperature (＞1600℃), suitable for high-frequency heating environment of braking;
Concentrated particle size (such as F1000 mesh), can form a dense wear-resistant layer and reduce brake loss.
Application: Core material of wear-resistant layer of motor vehicle/aircraft brake pads.
Brown corundum (A)
Advantages:
High toughness, can withstand greater pressure, and improve the structural strength of brake pads;
Outstanding cost-effectiveness, lower cost than white corundum, suitable as reinforcing filler.
Application: Added to adhesives to enhance friction stability and extend life.
2, secondary or unrecommended materials
Black silicon carbide (C)
The hardness is close to that of green silicon carbide, but the toughness is lower. It is mainly used for processing low-strength materials such as glass and ceramics. It is easy to break in brake pads due to brittleness.
White corundum (WA)
High hardness but poor toughness, mainly used for precision grinding (such as metal polishing), lacking the impact resistance and friction stability required for brake pads.
3. Comprehensive recommendations
Green silicon carbide is the first choice: used for the wear-resistant layer on the surface of the brake pad, directly improving the braking performance and durability;
Brown corundum is used as a composite filler to enhance the toughness of the matrix and optimize the cost;
Avoid black silicon carbide/white corundum: the former is mismatched in application scenarios, and the latter does not meet the requirements.
Key points: Brake pad adhesives need to balance hardness, toughness, and temperature resistance. The combination of green silicon carbide + brown corundum can cover the core needs while ensuring economy.