| 摘要 |
FIELD: machine building.SUBSTANCE: invention relates to manufacture of structural members exposed during operation to high temperatures, and concerns a detail from composite material with ceramic matrix and method of its manufacture. It contains a fibre frame packed with a matrix, formed by multiple layers from ceramics with inclusion of the matrix phase boundary layer deflecting cracks between two adjoining ceramic layers of the matrix. The phase boundary layer includes the first phase from the material capable to promote to deflection of crack, which reached the phase boundary layer according to the first type of propagation in a transverse direction through one of two ceramic layers of the matrix, adjoining with a phase boundary layer, in such a manner that the crack propagation proceeds according to the second type of propagation along the phase boundary layer, and the second phase formed by discrete contact sections, distributed in the phase boundary layer and capable to promote to deflection of the crack, spreading along the phase boundary layer according to the second type of propagation, in such a manner that the crack propagation is deflected and continues according to the first type of propagation in transversal direction through another ceramic layer of the matrix, adjoining with the phase boundary layer.EFFECT: invention ensures the creation of the detail from composite material with the ceramic matrix with increased life expectancy at high temperatures in corrosive medium.15 cl, 19 dwg, 2 ex |
