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Preparation method for composite nano zirconium oxide powder and precision ceramic bearing

A nano-zirconia and composite powder technology, applied in the field of material preparation, can solve the requirements of high sintering temperature, energy consumption, strength, toughness and superplasticity of the material to meet the requirements of high-speed operation of bearings, corrosion resistance, anti-magnetic precision performance, etc. question

Inactive Publication Date: 2014-02-12
福建省德化福杰陶瓷有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a preparation method of composite nano-zirconia powder and precision ceramic bearings, aiming to solve the problem that the strength, toughness and superplasticity of the materials used in the manufacture of bearings provided by the prior art are difficult to meet the requirements of high-speed operation and corrosion resistance of bearings. , Anti-magnetic precision performance requirements, low reliability in use, high sintering temperature of materials, and serious energy consumption problems

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  • Preparation method for composite nano zirconium oxide powder and precision ceramic bearing
  • Preparation method for composite nano zirconium oxide powder and precision ceramic bearing

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preparation example Construction

[0069] The preparation method comprises the following steps:

[0070] In step S101, select zirconium rods and aluminum rods with a purity of not less than 93% to make planar sputtered zirconium palladium and aluminum palladium;

[0071] In step S102, zirconium palladium and aluminum palladium are loaded in the vacuum equipment of ion plating according to a certain quantity ratio, in vacuum state 10 -3 ~10 -5 Under Pa, pass 18000-21000 volts of high voltage electricity, when the instantaneous temperature of arc ignition reaches above 1400 ℃, fill in a certain proportion of oxygen, nitrogen, neon and argon with a flow rate of 280SCCM;

[0072] In step S103, zirconium palladium and aluminum palladium are activated into a gaseous state with an arc source to obtain a composite nanopowder, and after 20 minutes, the temperature is lowered and the pressure is released;

[0073] In step S104, liquid nitrogen is introduced into the adsorption tube to allow the gaseous powder to be ful...

Embodiment approach 1

[0130] Step 1: Select zirconium rods and aluminum rods with a purity of 93-95% to make planar sputtered zirconium palladium and aluminum palladium;

[0131] Step 2: Load zirconium palladium and aluminum palladium (according to 26: 6 targets) in the ion plating vacuum equipment, heat 400-1000 ℃ in a vacuum state for 10 -3 ~10 -5 Pa is connected to a high voltage of about 18000-21000 volts; the arc is struck to make the instantaneous temperature reach about 1400-1680 ℃, and the flow rate is filled with oxygen, nitrogen, neon and argon (ratio 60:30:5:5 parts). 280SCCM, at the same time use arc source to intensify zirconium palladium and aluminum palladium into gas state to make composite nanopowder, after about 20 minutes, cool down and release pressure;

[0132] Step 3: Introduce liquid nitrogen into the adsorption tube, let the gaseous powder fully adsorb on the adsorption tube, wait for 60-80 ℃, open the warehouse door and scrape off the powder with a scraper, that is, zircon...

Embodiment approach 2

[0157] Step 1: Select 94-96% pure zirconium rods and aluminum rods to make planar sputtered zirconium palladium and aluminum palladium;

[0158] Step 2: Load zirconium palladium and aluminum palladium (according to 28: 4 targets) in the ion plating vacuum equipment, heat 400-1100 ℃ in a vacuum state for 10 -3 ~10 -5 Pa high voltage is about 18000-21000 volts; the arc is struck to make the instantaneous temperature reach about 1500-1750 ℃, and the flow rate is filled with oxygen, nitrogen, neon and argon (ratio 70:20:5:5). 280SCCM, at the same time use arc source to intensify zirconium palladium and aluminum palladium into gas state to make composite nanopowder, after about 20 minutes, cool down and release pressure;

[0159] Step 3: Introduce liquid nitrogen into the adsorption tube, let the gaseous powder fully adsorb on the adsorption tube, wait for 70-90 ℃, open the door and scrape off the powder with a scraper, that is, zirconium oxide ZrO 2 , zirconium nitride ZrN, sili...

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Abstract

The invention belongs to the technical field of material preparation and provides a preparation method for composite nano zirconium oxide powder and a precision ceramic bearing. The high-performance composite nano zirconium oxide powder and the precision ceramic bearing are prepared; the purity of the composite nano zirconium oxide powder in the precision ceramic bearing is 98%-99.5%; the high-performance composite nano zirconium oxide powder solves the brittleness of ceramic; in a microstructure of a ceramic material, the sizes of a crystalline grain, a crystal boundary and a combining part of the crystalline grain and the crystal boundary are 1nm-100nm so as to improve the strength, the toughness and the superplasticity of the material; the sintering temperature of the material can be reduced obviously by a very small grain diameter, a large specific surface area and a high chemical performance, and the energy source is saved; the composition structure of the ceramic material is dense and uniform; the use reliability is improved; the composite nano zirconium oxide powder is uniform in grain accumulation, consistent in sintering and shrinking and excellent in physical performance; the bearing has excellent wear resistance, corrosion resistance and anti-magnetism performance, and has strong popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a preparation method of composite nano-zirconia powder and a precision ceramic bearing. Background technique [0002] The strength, toughness and superplasticity of the materials used to manufacture bearings provided by the prior art are difficult to meet the requirements of bearings for high-speed operation, corrosion resistance, and anti-magnetic precision performance. The reliability of use is low, the sintering temperature of the material is high, and the energy consumption serious. Contents of the invention [0003] The invention provides a preparation method of composite nano-zirconia powder and precision ceramic bearings, aiming at solving the problem that the strength, toughness and superplasticity of the materials used in the manufacture of bearings provided by the prior art are difficult to meet the requirements of high-speed operation and cor...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/626C04B35/622
Inventor 林福文
Owner 福建省德化福杰陶瓷有限公司