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Anti-cracking self-lubricating metal ceramic bearing and preparation method thereof

A cermet and self-lubricating technology, which is applied in the field of cermet bearings, can solve the problems of affecting the service life of bearings, affecting the strength of cermets, and failing to meet the requirements of bearing strength, so as to improve lubricity, increase bonding strength, and reduce interface effects Effect

Inactive Publication Date: 2016-03-02
ANHUI SILVER BALL BEARING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the metal and ceramic phases are directly sintered, and its boundary effect will affect the strength of the cermet, thereby affecting the service life of the bearing
The ratio of raw materials given in the article cannot meet the strength requirements of the bearing under high load conditions, and needs to be improved

Method used

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Embodiment Construction

[0013] An anti-cracking self-lubricating cermet bearing, made of the following raw materials in parts by weight (kg): iron citrate 2.3, basic nickel carbonate 3.1, flake niobium pentoxide 0.2, dimolybdenum boride 0.3, water 25, Appropriate amount of ammonia water, TiH 2 2.9, TiC12, aluminum borate whiskers 2, tantalum-doped tungsten bronze powder 1.6, lubricant 0.7, C1, W8.6, Mo6.1, V3.1, Fe65.

[0014] The preparation method of the anti-cracking self-lubricating cermet bearing comprises the following steps:

[0015] (1) Add ferric citrate into water in a nitrogen atmosphere, heat to 60°C, stir at 90 rpm for 1.5 hours, add TiC, flake niobium pentoxide, dimolybdenum boride, aluminum borate whiskers, doped Tantalum tungsten bronze powder, stirred for 1 hour, then added basic nickel carbonate and stirred for 3 hours, adjusted the pH value to 6 with ammonia water, heated to 90°C and kept stirring for 2 hours to obtain a gel;

[0016] (2) Heating the gel to 150°C and maintaining ...

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Abstract

The invention discloses an anti-cracking self-lubricating metal ceramic bearing. The anti-cracking self-lubricating metal ceramic bearing is prepared from, by weight, 2.3-2.4 parts of ferric citrate, 3.1-3.5 parts of basic nickel carbonate, 0.2-0.3 part of flaky niobium pentoxide, 0.3-0.4 part of dimolybdate boride, 25-30 parts of water, an appropriate amount of ammonium hydroxide, 2.9-3 parts of TiH2, 12-12.5 parts TiC, 2-2.3 parts of aluminum borate whisker, 1.6-1.8 parts of tantalum-doped tungsten bronze powder, 0.7-0.9 part of lubricant, 1-1.1 parts of C, 8.6-9 parts of W, 6.1-6.3 parts of Mo, 3.1-3.3 parts of V and 65-66 parts of Fe. By means of flaky niobium pentoxide, dimolybdate boride, aluminum borate whisker and tantalum-doped tungsten bronze powder, the lubricating performance in the pressing process is improved, and the toughness and cracking resistance are improved after sintering.

Description

technical field [0001] The invention relates to the technical field of cermet bearings, in particular to an anti-cracking self-lubricating cermet bearing and a preparation method thereof. Background technique [0002] The development of modern science and technology has higher and higher requirements on the friction, wear and lubrication performance of materials under high temperature conditions. The research and development of self-lubricating composite materials has become an important research hotspot in the field of tribology. Metal or ceramic-based self-lubricating materials are composite materials formed by adding solid lubricants into metal or ceramic matrix as components, and their tribological properties depend on the precipitation and dispersion distribution of solid lubricant contained in the matrix during the friction process. However, there are few solid lubricants that can withstand high sintering temperature without losing lubricating properties, and their un...

Claims

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Application Information

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IPC IPC(8): C22C38/24C22C33/02
Inventor 余寅生
Owner ANHUI SILVER BALL BEARING
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