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Preparation method of aluminium oxide and titanium dioxide compound ceramic powder

A composite ceramic and titanium oxide technology, applied in the field of preparation of alumina-titanium oxide composite ceramic powder, can solve the problems of large one-time investment, expensive process equipment, poor fluidity, etc., and achieves high bulk density, good repeatability, Good abrasion resistance

Inactive Publication Date: 2010-09-22
上海大豪纳米材料喷涂有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main process equipment of methods (1) and (2) are electric arc furnace or high-temperature sintering kiln furnace, crushing equipment and jet crushing equipment. These process equipment are expensive, and the one-time investment is large, and the powder prepared at the same time is irregular block powder. poor liquidity

Method used

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  • Preparation method of aluminium oxide and titanium dioxide compound ceramic powder
  • Preparation method of aluminium oxide and titanium dioxide compound ceramic powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Will Al 2 o 3 ·TiO 2 The powder is batched and mixed according to the weight ratio, and the water consumption is: material: water = 1: 2.5;

[0094] Binder dosage: material: binder = 100: 0.8; defoamer dosage: material: defoamer = 100: 0.4, dispersant dosage: material: dispersant = 100: 0.4;

[0095] Lubricant dosage: material: lubricant = 100:0.3, make slurry, then spray dry, process parameters: inlet air temperature: 290°C; exhaust air temperature: 95°C; atomizing disk speed: 1420 (r.p.m); peristaltic pump The rotation speed is 52 (r.p.m); the spray-dried granular powder is prepared, and the mixed and agglomerated powder is obtained through sieving and classification. The spray-dried granulated powder is sintered at 1300°C or plasma spheroidized, rinsed, and sedimented for classification to obtain agglomerated, sintered and agglomerated, plasma spheroidized powders.

Embodiment 2

[0097] The preparation method and procedure are the same as in Example 1, except that the amount of binder is changed, ie material: binder=100:1.0.

Embodiment 3

[0099] The preparation method and procedure are the same as in Example 1, except that the amount of antifoaming agent is changed, that is, material: antifoaming agent=100:0.5.

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PUM

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Abstract

The invention relates to a preparation method of aluminium oxide and titanium dioxide (Al2O3.TiO2)compound ceramic, which comprises the preparation of Al2O3.3TiO2 powder, Al2O3.13TiO2 powder, Al2O3.20TiO2 powder, Al2O3.40TiO2 powder and Al2O3.50TiO2 powder. The preparation process is characterized in that (1) the process is in a straight line type, and three types of powder are prepared, i.e. a mixed type, an aggregation type, an aggregation sintering type and an aggregation plasma spheroidizing type; (2) in the aspect of slurry preparation, PVA (Polyvinyl Alcohol) with high degree of polymerization and high molecular weight is adopted as a binder, and simultaneously, a right amount of defoaming agent, dispersing agent and lubricating agent is added; (3) in the aspect of equipment, a high-efficiency circulating stirring mill and a high-speed centrifugal spray drying pelletizer are adopted; and (4) a settling separation grading method is adopted for the granularity and the granularity distribution of the powder. The preparation method has high production efficiency, stable powder performance and good reproducibility and simultaneously reduces the pollution of dust to the environment.

Description

Technical field: [0001] The present invention relates to aluminum oxide titanium oxide (Al 2 o 3 ·TiO 2 ) preparation method of composite ceramic powder. Background technique: [0002] It is well known that aluminum oxide titanium oxide (Al 2 o 3 ·TiO 2 ) Ceramic coating can significantly improve the hardness, wear resistance and corrosion resistance of the surface, and has a wide range of applications in petrochemical, textile, metallurgy and machinery industries. Such as mud pump piston rod, plunger pump plunger and seal, hydraulic system butterfly valve - hard surface wear resistance, cavitation and particle erosion resistance coating in the discharge valve plug and seal, metal wire drawing industry Coating of godet wheel and drawing reel; coating of godet wheel, roller roller, shrinking roller, spinning guide frame of chemical fiber spinning machine, plunger of high pressure reciprocating pump, coating of mechanical seal dynamic ring, etc. Coatings can be achieved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/46
Inventor 李日昇施兰香赵华明徐文华
Owner 上海大豪纳米材料喷涂有限公司
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