| abstract |
The invention provides a low-noise silicon nitride ceramic-based friction material and a preparation method and application thereof, wherein Si is 3 N 4 Ceramic-based friction material, characterized in that it is made of Si 3 N 4 Powder, BN powder, beta-Si 3 N 4 The crystal whisker, the ceramic fiber and the metal oxide powder are used as main raw materials and are prepared by uniformly mixing and sintering, wherein in the raw materials, Si 3 N 4 45-92% of powder, 2-40% of BN powder and beta-Si 3 N 4 2-10% of whisker, 2-20% of ceramic fiber, 2-15% of metal oxide and beta-Si 3 N 4 The mass ratio of the crystal whisker to the ceramic fiber is 1: (1-10). |