NFJ Microporous Metal Ceramic Material

As is well known, friction materials are ternary composite materials consisting of reinforcing materials, binders, and friction fillers. Friction fillers are used to adjust the friction and wear performance at different temperatures, with distinctions between room temperature, variable temperature, and high temperature. The microporous metal ceramic material we are introducing here is a novel functional friction material modifier with high-temperature friction enhancement and low wear characteristics. Its primary raw materials consist of heat-treated black metals and various ceramic phases, forming a heterogeneous composite material. This microporous metal ceramic heterogeneous composite material is produced through high-temperature transformation of metal and ceramic phases, coupled with foaming and carbonization treatment.

Principle:

1、The microporous metal ceramic material undergoes structural changes in terms of mechanics, combining the advantages of metal's good heat dissipation and anti-static functionality with improvements in metal density, rust resistance, and high-temperature friction spark issues. Due to its microporous structure, it reduces the occurrence of voids in products caused by internal heat during high temperatures, thereby reducing the degree of delamination of friction materials (brake pads) after salt-alkali degradation.

2、Commonly used high-temperature friction fillers, such as sintered alumina, polished alumina, zircon sand, and zircon powder, generally have Mohs hardness in the range of 6-7. This hardness contributes significantly to high-temperature noise in friction. However, the Mohs hardness of microporous metal ceramic materials is only 2-3, effectively reducing noise. Depending on the quantity used, it eliminates or reduces the noise of friction materials.

3、In semi-metallic friction materials, products with slightly higher friction coefficients may randomly experience metal embedding. Using microporous metal ceramic materials to partially replace metal fibers can improve and reduce the occurrence of embedding.

4、The microporous structure of microporous metal ceramic materials effectively reduces the ratio of cold compression to hot compression of friction materials. When heated, the micropores absorb a significant amount of heat, eliminating and reducing the expansion factor of the product. Upon returning to a cold state, the microporous structure of the material prevents product shrinkage.

5、Due to its Mohs hardness of 2-3, microporous metal ceramic materials absolutely do not harm mating parts.

6、After ablation, the microporous metal ceramic material still retains 96.7% residual mass at 800 ℃. With minimal mass loss, it does not lead to large cavities in NAO materials after high temperatures, reducing product salt-alkali degradation.

Usage scenarios: brake pads, mining engineering machinery, dynamic balancing devices, wind power equipment, and other equipment that require braking

Advantage:

1. Reduce component weight

2. Reduce overall material consumption

3. Improve the apparent quality of brakes

4. Better performance

5. More durable

6. Make the design more flexible

7.Consistent powders ensure uniform products

Main Functions:

1、Resolves the issue of unstable friction performance caused by high temperatures.

2、Addresses the high-temperature expansion and low-temperature contraction of friction materials.

3、Solves problems such as warping, peeling, and rusting of friction materials.

4、Addresses the internal heat and static electricity generation during blending of friction sealing materials.

5、Solves the issue of metal sparks during high-temperature braking of friction materials.

6、Addresses the problem of metal embedding during braking of friction materials.

7、Resolves the issue of excessive proportions of various metal materials added to the friction material formula.

8、Solves the problem of excessive hardness of added materials in the friction material, causing damage to mating parts.