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Oxide ceramics/ alkaline earth metal chromate nano composite material and preparation method thereof

A technology of nanocomposite materials and oxide ceramics, applied in the field of nanocomposite materials and their preparation, can solve the problems of large friction coefficient, limited use conditions of solid lubricants, high wear rate, etc., and achieve small friction coefficient, low wear rate, Effect of reducing friction coefficient and wear rate

Inactive Publication Date: 2010-06-23
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of large friction coefficient and high wear rate in the wide temperature range from room temperature to 800°C in the existing oxide ceramics and the limited use conditions of the solid lubricant used in the production of oxide ceramics, the present invention provides A kind of oxide ceramic / alkaline earth metal chromate nanocomposite material and preparation method thereof

Method used

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  • Oxide ceramics/ alkaline earth metal chromate nano composite material and preparation method thereof
  • Oxide ceramics/ alkaline earth metal chromate nano composite material and preparation method thereof
  • Oxide ceramics/ alkaline earth metal chromate nano composite material and preparation method thereof

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specific Embodiment approach 1

[0009] Embodiment 1: In this embodiment, the oxide ceramic / alkaline earth metal chromate nanocomposite material is made of 50-90 parts by weight of nano-oxide ceramics and 10-50 parts of nano-alkaline earth metal chromate.

[0010] The nano oxide ceramics and nano alkaline earth metal chromates in this embodiment can be purchased from the market.

[0011] The friction coefficient of the nanocomposite material in this embodiment is about 0.3 in a wide temperature range from room temperature to 800°C, and the wear rate at room temperature and 800°C is 10. -6 mm 3 On the order of / N·m, the nanocomposite material of this embodiment has a small friction coefficient and a low wear rate in a wide temperature range from room temperature to 800°C.

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the oxide ceramics / alkaline earth metal chromate nanocomposite material consists of 60-80 parts by weight of nano-oxide ceramics and 20-40 parts of Made of nano alkaline earth metal chromate. Others are the same as the first embodiment.

specific Embodiment approach 3

[0013] Specific embodiment three: The difference between this embodiment and specific embodiment one is that the oxide ceramics / alkaline earth metal chromate nanocomposite material consists of 65-75 parts of nano-oxide ceramics and 25-35 parts of Made of nano alkaline earth metal chromate. Others are the same as the first embodiment.

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Abstract

The invention discloses oxide ceramics / alkaline earth metal chromate nano composite material and preparation method thereof, relating to nano composite material and preparation method thereof. The invention solves the problems of big frictional factor and high abrasion rate of the conventional oxide ceramics in the wide temperature range from room temperature to 800 DEG C and the problem of limited use condition of the solid lubricant used in the conventional preparation process of oxide ceramics. The nano composite material is prepared from nano oxide ceramics and nano alkaline earth metal chromate and the preparation method is as follows: 1. preparing powder mixture through ball milling; 2. conducting cold-pressing treatment to the powder mixture; and 3. sintering and cooling the mixture to room temperature along with the furnace. In this way, oxide ceramics / alkaline earth metal chromate nano composite material can be prepared. The oxide ceramics / alkaline earth metal chromate nano composite material prepared through the method has small frictional factor and low abrasion rate within the wide temperature range from room temperature to 800 DEG C and the nano oxide ceramics used in the process is free from using limitations.

Description

technical field [0001] The invention relates to a nanocomposite material and a preparation method thereof. Background technique [0002] Oxide ceramics (partially stabilized zirconia and alumina-reinforced zirconia, alumina, zirconia-toughened alumina ceramics, etc.) are traditional structural ceramics with high hardness, high strength, room temperature wear resistance, high stiffness, and excellent chemical properties. Stability and other advantages, its application in the industrial field can improve structural efficiency, reduce the structural weight of structural materials, improve the service reliability of structural materials and prolong the service life of structural materials. extremely important role. The friction coefficient of existing oxide ceramics at room temperature is between 0.4 and 0.6, and the wear rate is 10 -5 mm 3 / N·m order of magnitude, and at 800°C, the friction coefficient is as high as 1.0-1.2, and the wear rate is 10 -4 -10 -3 mm 3 / N·m ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/10C04B35/48C04B35/12C04B35/622
Inventor 欧阳家虎梁雪松刘占国
Owner HARBIN INST OF TECH
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