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Preparation method of zirconia-based metallic ceramic material

A ceramic material and zirconia-based technology, which is applied in the field of preparation of zirconia-based cermet materials, can solve the problems of short service life and low heat exchange efficiency of heat exchange tubes, and achieve the effect of overcoming short service life

Inactive Publication Date: 2018-04-06
朱森
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a zirconia-based cermet material for manufacturing heat exchange tubes of a preheating furnace in view of the above-mentioned problems. Ceramic materials to overcome the problems of short service life and low heat exchange efficiency of traditional heat exchange tubes

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  • Preparation method of zirconia-based metallic ceramic material
  • Preparation method of zirconia-based metallic ceramic material

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[0026] Further, the preparation method of the ceramic powder comprises the following steps:

[0027] Step 1. The blank is prepared by using the existing technology, and then the surface of the blank is evenly coated with glaze, and then fired into a fired body at a temperature below 1300°C;

[0028] Step 2. Grinding the fired preform together with zinc oxide into a powder with an average particle size of less than 50 μm to obtain ceramic powder, wherein the mass fraction of zinc oxide added is not higher than 3.5% of the mass fraction of the fired body .

[0029] In the zirconia-based cermet material of the present invention, the preparation method of the zirconia-based cermet material comprises the following steps:

[0030] Step 1. Take the designed amount of metal powder and ceramic powder and place them in a high-speed ball mill for mixing and grinding for 2-4 hours. The speed of the high-speed ball mill is 400rad / min, and then put them in a high-speed mixer and mix them e...

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Abstract

The invention discloses a preparation method of a zirconia-based metallic ceramic material. The preparation method comprises the following steps that 1, a designed amount of iron metal powder and a designed amount of zirconia-based ceramic powder are taken and mixed into powder, and a primary mixture is obtained; 2, compression molding is conducted, and a compressed blank is obtained; 3, the obtained compressed blank is dried and subjected to heat preservation; 4, vacuum sintering is conducted, and a semi-finished product is obtained; and 5, the obtained semi-finished product is ground, subjected to finishing and dried, and then the zirconia-based metallic ceramic material is obtained. According to the preparation method of the zirconia-based metallic ceramic material, the problems that ametallic ceramic heat exchange pipe in a traditional preheating furnace is not durable and poor in heat exchange efficiency are mainly solved, the problems that the traditional heat exchange pipe is short in service life and low in heat exchange efficiency are solved by compounding the zirconia-based metallic ceramic material with the good heat conductivity and elongation and improving a traditional production technology, and the zirconia-based metallic ceramic material is especially suitable for being applied to a gas-phase preheating furnace with the preheating temperature being 800 DEG C or above.

Description

technical field [0001] The invention relates to the technical field of manufacturing high-temperature preheating furnaces, in particular to a method for preparing zirconia-based cermet materials used for manufacturing heat exchange tubes of preheating furnaces. Background technique [0002] The preparation methods of nano-scale titanium dioxide mainly include physical methods and chemical methods. Physical methods mainly include sputtering methods, thermal evaporation methods and laser evaporation methods. Chemical methods mainly include liquid phase methods and gas phase methods. Liquid phase methods mainly include uniform precipitation methods and Sol-gel method, gas phase method mainly includes TiCl 4 Gas phase oxidation method, TiCl is generally used at present 4 Nano-TiO2 was prepared by gas-phase oxidation. TiCl 4 The gas phase oxidation method generally uses nitrogen as TiCl 4 Carrier gas, oxygen as an oxidant, oxidation reaction in a high-temperature tubular reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C29/12
CPCC22C1/051B22F2998/10B22F2999/00C22C29/12B22F2009/043B22F3/02B22F3/1007B22F2003/247B22F2201/20
Inventor 朱森
Owner 朱森
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