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Ferriferous augite based metal ceramic and preparation method thereof

A technology of cermets and pyroxene, applied in the field of Fe/pyroxene cermets and its preparation, can solve problems such as cermet blanks, achieve good thermal stability, expand industrial applications, improve toughness and other mechanical properties

Active Publication Date: 2018-01-30
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technology of using water-quenched slag of slag glass-ceramics to prepare cermets is still blank

Method used

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  • Ferriferous augite based metal ceramic and preparation method thereof
  • Ferriferous augite based metal ceramic and preparation method thereof
  • Ferriferous augite based metal ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: A kind of Fe / pyroxene cermet and preparation method thereof

[0044] (1) Taking raw materials according to the chemical composition of CMSA glass-ceramics, wherein iron tailings are 55%, blast furnace slag powder 20%, quartz sand 15%, borax 2%, sodium carbonate 3%, feldspar powder 5%;

[0045] (2) Mixing: batching is carried out according to the above, and put into the mixing machine for mixing;

[0046] (3) Melting material: Put the uniformly mixed raw materials into the crucible, and melt them in a high-temperature resistance furnace at 1450°C for 2 hours; (4) Preparation of water-quenched slag powder: Pour the melted glass liquid into cold water quickly to obtain water The quenched glass particles are then ground in a ball mill to a particle size of 200 mesh to obtain slag glass-ceramic water-quenched slag powder; its composition is shown in Table 2;

[0047] (5) Ingredients: Measure 100 parts of water-quenched slag powder, Fe 2 o 3 15 parts of powde...

Embodiment 2

[0054] Embodiment 2: a kind of Fe / pyroxene cermet and preparation method thereof

[0055] (1) Ingredients: 100 parts of glass-ceramic water-quenched slag powder, Fe 2 o 3 15 parts of powder, 25 parts of ferrosilicon powder containing Fe 75% (weight) are mixed; Wherein the chemical composition of glass-ceramic water-quenching slag is shown in Table 2;

[0056] (2) Mixing: put the mixture into a ball mill tank, and mill it for 1 hour at room temperature to make the powder evenly dispersed;

[0057] (3) Compression molding: the dispersed powder is pressed into a blank by a molding machine, the molding pressure is 50MPa, and isostatic pressing is carried out at a pressure of 180MPa;

[0058] (4) Sintering: Put the formed green body into the atmosphere furnace, feed nitrogen gas at a flow rate of 0.5L / min, raise the temperature to 800°C at a heating rate of 8°C / min, and keep it warm for 3 hours; naturally cool to 200°C and stop the aeration. Nitrogen, continue to cool to room te...

Embodiment 3

[0060] Embodiment 3: a kind of Fe / pyroxene cermet and preparation method thereof

[0061] (1) Ingredients: Measure 100 parts of water-quenched slag powder prepared in Example 1, Fe 2 o 3 10 parts of powder, 30 parts of iron concentrate powder, 50 parts of ferrosilicon powder containing Fe65% (weight) are mixed;

[0062] (2) Mixing: put the mixture into a ball mill tank, and ball mill for 2 hours at room temperature to make the powder evenly dispersed;

[0063] (3) Press molding and sintering: the dispersed powder is put into a graphite mold, first shaped under a pressure of 10MPa, and then put into a spark plasma sintering furnace (SPS) for sintering at a heating rate of 35°C / min Raise the temperature to 800°C, and gradually increase the pressure to 50MPa, keep the temperature and hold the pressure for 20 minutes, and take it out after cooling to room temperature with the furnace.

[0064] The density of the sintered samples was measured by the drainage method, and the micr...

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Abstract

The invention relates to a Fe / augite metal ceramic and a preparation method thereof. Slag glass ceramic water quenching powder, iron-containing substances and reducing agents serve as raw materials and are mixed to prepare the metal ceramic. According to the metal ceramic, the iron-containing substances and silicon iron serve as nucleating agents, and eutectic growth of iron and diopside is promoted, so that the toughness and other mechanical properties of the metal ceramic are improved. The Fe / augite metal ceramic has characteristics such as wear resistance, corrosion resistance and high-temperature resistance of glass ceramics, and also has toughness of metal and good heat stability. The industrial use of the metal ceramic is greatly widened, the metal ceramic is low in production cost,and the preparation method is simple and wide in application.

Description

technical field [0001] The invention belongs to the technical field of preparing Fe / pyroxene cermets by high-value utilization of solid waste, and in particular relates to a Fe / pyroxene metal prepared by mixing slag glass-ceramic water-quenching powder, iron-containing substances and reducing agents as raw materials Ceramics and methods of making them. Background technique [0002] As a new type of material developed in the last century, glass-ceramics has the advantages of high mechanical strength and hardness, good chemical stability, thermal stability and excellent corrosion resistance; at the same time, it has the excellent properties of glass and ceramics, become a unique material. The raw materials selected for preparing slag glass-ceramics are solid wastes, the raw materials are cheap, and the preparation process is relatively simple, so that the manufactured products can obtain relatively high profits and have good social benefits. Metal tailings, blast furnace sla...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C29/12
Inventor 张雪峰李保卫贾晓林陈伟丽马强沈保根刘艳丽邓磊波刘芳张明星徐文利
Owner INNER MONGOLIA UNIV OF SCI & TECH
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