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High performance nano-composite aluminum oxide based self-lubricating cutter material and preparation method thereof

A technology of compounding alumina and tool materials, applied in the field of cutting tool materials, can solve the problems of difficulty in taking into account mechanical properties and friction properties, achieve good application prospects, optimize mechanical properties, high mechanical properties and friction and wear properties.

Inactive Publication Date: 2013-04-03
QILU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to overcome the defect that the existing self-lubricating ceramic tool materials are difficult to balance the mechanical properties and friction properties, the present invention provides a high-performance nano-composite alumina-based self-lubricating tool material and its preparation method

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  • High performance nano-composite aluminum oxide based self-lubricating cutter material and preparation method thereof
  • High performance nano-composite aluminum oxide based self-lubricating cutter material and preparation method thereof

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Embodiment Construction

[0006] Technical scheme of the present invention is as follows:

[0007] A high-performance nano-composite alumina-based self-lubricating tool material, the volume percentage of raw materials is as follows:

[0008] Titanium carbide 25-55%; Nano calcium fluoride 5-15%; Magnesium oxide 0.5-1.5%; Aluminum oxide balance;

[0009] The micron-sized alumina powder is ball-milled to an average particle size of 1-2 μm;

[0010] The titanium carbide is a micron-sized powder, which is ball-milled to an average particle size of 1-2 μm;

[0011] The particle size range of the nanometer calcium fluoride is 15-50nm.

[0012] Preferably according to the present invention, the high-performance nano-composite alumina-based self-lubricating tool material has a volume percentage composition of raw materials as follows:

[0013] Aluminum oxide 40-55%; titanium carbide 30-50%; nano-calcium fluoride 5-15%; magnesium oxide 0.5-1%.

[0014] Preferably according to the present invention, the high-...

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Abstract

The invention relates to a high performance nano-composite aluminum oxide based self-lubricating cutter material and a preparation method thereof. The high performance nano-composite aluminum oxide based self-lubricating cutter material comprises the raw materials in percent by volume as follows: 25-55% of titanium carbide, 5-15% of nano calcium fluoride, 0.5-1.5% of magnesium oxide, and the balance of aluminum oxide. The preparation method comprises the steps: first, preparing nano calcium fluoride into a dispersing liquid; then, adding MgO, Al2O3 and TiC, mixing, dispersing, ball-grinding, drying and sieving to obtain powder; and sintering by a vacuum hot-press approach. According to the invention, nanosolid lubricant CaF3 is successfully guided into a ceramic matrix crystalline grain, so that the bending strength and hardness of the self-lubricating ceramic cutter material are improved, and the breaking tenacity is improved. The self-lubricating cutter material is low in cost of material, simple in process, small in device investment, and industrialization is easy to realize.

Description

technical field [0001] The invention relates to the technical field of cutting tool materials, in particular to a high-performance nano-composite alumina-based self-lubricating tool material and a preparation method thereof. Background technique [0002] Self-lubricating tool means that the tool material itself has the functions of anti-friction, anti-wear, and lubrication, and can realize self-lubricating cutting processing without external lubricating fluid or lubricant, reduce equipment investment, avoid environmental pollution caused by cutting fluid, and realize cleanliness Therefore, the self-lubricating tool is an efficient, clean and green tool with broad application prospects in modern cutting. At present, the common self-lubricating systems in ceramic materials include Al 2 o 3 -Graphite, Al 2 o 3 -CaF 2 and TiB 2 -BN, etc., wherein the solid lubricants added in the self-lubricating ceramic tool material system are all in the micron scale. Although the tribo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/117C04B35/622
Inventor 许崇海衣明东肖光春陈照强方斌魏高峰冯益华
Owner QILU UNIV OF TECH
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