| 摘要 |
PURPOSE:To obtain the titled inexpensive composite material excelling in mechanical properties such as strength, wear resistance, etc., by using in a proper volume percentage hybrid fiber consisting of alumina fiber having a specific composition and of mineral fiber having a specific composition as fibrous reinforcement and also by using Al etc. as matrix metal. CONSTITUTION:The alumina fiber consisting of, by weight, >=80% Al2O3 and the balance essentially SiO2 is uniformly mixed with the mineral fiber mainly composed of SiO2, CaO, and Al2O3, containing <=10% MgO, <=5% Fe2O3 and <=10% other minerals and also containing in an aggregate <=20% nonfibrous grains and <=7% nonfibrous grains with >=150mu grain size to form the hybrid fiber. This hybrid fiber is used as fibrous reinforcement by >=1%, preferably 2-40% by volume, and Al, Mg, Cu, Zn, Pb, Sn and alloys mainly composed of them, etc., are used as the matrix metal, so that very inexpensive composite material excelling in mechanical properties and having superior characteristic of wear by friction with opposite material can be obtained. |
