| 摘要 |
PURPOSE:To provide a high-energy load (absorption) brake by using sintering substance of silicon nitride as a friction material for both sides of a rotor and a stator. CONSTITUTION:A silicon nitride (Si3N4) sintering substance is obtained by molding silicon powder by press to be nitriding sintered at about 1,200 deg.C-1,450 deg.C in nitrogen gas, or by adding about 1-20 volume % of an additive, such as MgO, Al2O3, Y2O3, SiO2 and so on to previously compounded silicon nitride powder to be molded into a desired shape by press, static pressure molding, or the like, and then sintering it in an atmosphere or heating compression molding it. The described silicon nitride sintering substance is loaded on both or one of a rotating member (rotor) and a fixed member (stator) as a friction material, which can provide a disc brake of a light weight, which can be used at high temperature, and is excellent in heat impact resisting property and radiation of heat. |
