AL2O3-Fe base ceramic composite material and production method thereof

Abstract

The present invention relates to an AL2O3-Fe base ceramic composite material and a production method thereof. The AL2O3-Fe base ceramic composite material is produced according to the following raw material preparation and steps, wherein the raw materials adopt AL2O3, CaCO3, SiO2, Fe and AL2O3.2SiO2.2H2O, and the steps comprise dry powder mixing ball milling, mixing pulping, molding, wax removing, high temperature vacuum sintering, surface treatment, inspection and the like so as to produce the AL2O3-Fe base ceramic composite material, and the AL2O3-Fe base ceramic composite material is produced by using the method. According to the present invention, the hydrogen protection reduction atmosphere is adopted to sinter during high temperature sintering, such that the elemental state Fe exists in the ceramic matrix after the intaken Fe-base material is sintered, ie., the elemental state Fe exists in the high alumina ceramic so as to provide a good toughening effect, overcome disadvantages of the high alumina ceramic and the zirconium ceramic, and enlarge related application fields.

Description

technical field [0001] The present invention relates to an AL 2 o 3 -Fe-based ceramic composite material and manufacturing method thereof. Background technique [0002] At present, ordinary high-alumina ceramics or zirconia ceramics have excellent physical and mechanical properties such as corrosion resistance, high temperature resistance, and high strength, but they all have a commonality, that is, they are usually "brittle" and fragile. With the progress and development of society and the widespread use of ceramics in the industrial field, this generality has become a weakness. In the use of related fields, it has caused the unsatisfactory "brittleness" of ceramics during use, and cannot achieve effects on other materials such as metals; [0003] However, materials such as metals cannot achieve ideal results due to environmental influences (such as acid-base environment, etc.). [0004] The toughening of existing ceramics is mainly reflected in the addition of zirconia...

AI Technical Summary

Problems solved by technology

[0005] In the past, the toughening mechanism of ceramics mainly used ZrO 2 As a carrier (such as ZTA) to achieve or use pure ZrO 2 However, the complexity of ZTA in the production process, such as the temperature change during high-temperature sintering, will fundamentally change the performance of ZTA, so that the toughness of ceramics cannot be fully reflected, while ZrO 2 The production of ceramics is mainly reflected in the cost and the difficulty of subsequent deep processing