| abstract |
A kind of bionic laminar aluminium oxide pattern composite ceramic material and preparation method thereof based on nanometer texture toughening, the present invention relates to a kind of structural ceramic materials and preparation method thereof.That the invention solves existing structure ceramics toughnesses is low, makes that ceramics strength reduces or toughening effect promotes the very limited problem of amplitude based on pure strong-weak interlayer and pure strong-strong sandwich.Ceramic material be etc. shaft-like crystal grain matrix Al 2 O 3 The nanometer texture Al of enhancement layer and flaky crystalline grain 2 O 3 Toughening layer is alternately arranged into symmetrical structure.Method: one, using the matrix Al of the shaft-like crystal grain such as casting technique preparation 2 O 3 Enhancement layer ferritic diaphragm；Two, the nanometer texture Al of flaky crystalline grain is prepared using casting technique 2 O 3 Toughening layer ferritic diaphragm；Three, two kinds of diaphragms are laminated, the even pressure of hot water, dumping and isostatic cool pressing；Four, bionic laminar Al is prepared in conjunction with atmosphere sintering and HIP sintering 2 O 3 Composite ceramics. |