Preparation method of two-dimensional homogenized corundum mullite high-temperature material

A high-temperature material, mullite technology, applied in the field of preparation of two-dimensional homogeneous corundum mullite high-temperature materials, can solve the problems of thermal shock resistance, creep resistance and high-temperature bending resistance, etc., to improve heat resistance The effect of improving the shock performance and thermal shock resistance

Pending Publication Date: 2022-04-29
义马瑞辉新材料有限公司
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  • Claims
  • Application Information

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Problems solved by technology

In the homogenized material mainly composed of corundum phase, the mullite subcrystalline phase can endow the material with good thermal shock resistance, creep resistance, and high temperature bending resistance, and when the amount of mullite subcrystalline phase is not When it is large, it will lead to lack of thermal shock resistance, creep resistance and high temperature bending resistance of the material

Method used

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  • Preparation method of two-dimensional homogenized corundum mullite high-temperature material

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Effect test

Embodiment 1

[0038] A two-dimensional homogeneous corundum-mullite high-temperature material. The high-temperature material is composed of A component and B component mixed with a binder, wherein the ratio of A:B:binder is 2.5:7.5:0.02; wherein B component 90 parts by mass of corundum and 10 parts by mass of corundum seed crystals; component A consists of 75 parts by mass of mullite and 25 parts by mass of mullite precursor.

Embodiment 2

[0040] A two-dimensional homogeneous corundum-mullite high-temperature material. The high-temperature material is composed of A component and B component mixed with a binder, wherein the ratio of A:B:binder is 1.5:8.5:0.05; wherein B component 70 parts by mass of corundum, 30 parts by mass of corundum seed crystals, 80 parts by mass of mullite and 20 parts by mass of mullite precursor.

Embodiment 3

[0042] A two-dimensional homogeneous corundum-mullite high-temperature material. The high-temperature material is composed of A component and B component mixed with a binder, wherein the ratio of A:B:binder is 2.0:8.0:0.03; wherein B component 80 parts by mass of corundum, 20 parts by mass of corundum seed crystals, 90 parts by mass of mullite and 10 parts by mass of mullite precursor in component A.

[0043] see figure 1 , a method for preparing a two-dimensional homogeneous corundum-mullite high-temperature material, comprising the following steps:

[0044] The first step: select the main material and auxiliary materials; the main material includes high-alumina materials, mainly to form corundum phase; the main material also includes low-alumina materials, mainly to form mullite phase; the first step The auxiliary materials include mullite precursors, corundum seeds, suspending agents and binders.

[0045] Step 2: prepare components A and B respectively; component A is mad...

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Abstract

The invention relates to the technical field of high-temperature materials, and discloses a preparation method of a two-dimensional homogenized corundum mullite high-temperature material, which comprises the following steps: 1, selecting a main material and an auxiliary material: 2, respectively preparing a component A and a component B; 3, blending A and B according to the proportion and fully mixing; step 4, molding the mixed mixture; (5) calcining the formed mixture; and 6, cooling to obtain a finished product. A fine-ground high-aluminum material mainly forming a corundum phase serves as a substrate of a two-dimensional homogenized material, a fine-ground low-aluminum material mainly forming a mullite phase is added, and the two-dimensional homogenized material with the corundum phase serving as a surface and the mullite phase serving as a point structure is formed through mechanical uniform mixing, forming and sintering. The structure is similar to a long-range ordered and short-range disordered quasi-crystal structure of glass.

Description

technical field [0001] The invention relates to the technical field of high-temperature materials, in particular to a method for preparing a two-dimensional homogenized corundum-mullite high-temperature material. Background technique [0002] Corundum mullite refers to an inorganic non-metallic material with high corrosion resistance and excellent high temperature performance, with an alumina content between 77-94%, corundum phase as the main crystal phase, and mullite phase as the secondary crystal phase. [0003] At present, the main methods of artificially preparing corundum mullite materials are: [0004] Ore grading→batching→fine grinding→ingredient blending→dehydration→forming (or briquetting or mud extrusion or machine pressing)→drying→sintering→finished product. [0005] This process can obtain an inorganic high-temperature material with uniform corundum phase distribution. The corundum phase is the main one. Due to the lack of local alumina and the abundance of sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101C04B35/622
CPCC04B35/101C04B35/622C04B2235/3463
Inventor 肖继东赵华堂唐明军王振友路建勋彭建华粱伟峰
Owner 义马瑞辉新材料有限公司
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