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Nepheline glass ceramic and metal powder composite material and preparation method thereof

A technology of glass-ceramic powder and glass-ceramic, applied in the field of new materials, can solve problems such as the inability to realize the combination of glass and metal, and achieve the effects of improving mechanical properties, expanding application fields, and reducing overproduction

Active Publication Date: 2010-12-29
赵凤宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a nepheline glass-ceramic and metal powder composite material and its preparation method, to solve the problem that the combination of glass and metal cannot be realized in the prior art

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  • Nepheline glass ceramic and metal powder composite material and preparation method thereof

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preparation example Construction

[0026] The method for preparing nepheline glass-ceramic and metal powder composite material of the present invention has the following specific steps:

[0027] (1) Grind the nepheline glass-ceramic water-quenched particles with a ball mill or other grinding equipment into 100-300 mesh fine powder, and then mix the 100-500 mesh metal powder and whiskers with the glass-ceramic powder 2- 3 hours;

[0028] (2) Cold-press forming the mixed powder uniformly mixed in step (1) with a 100-500 ton press, and determine according to the specifications of the blank, the pressure: 120-150MPa, and the rectangular blank is molded;

[0029] (3) Put the blank of step (2) into a roller kiln or a bell jar crystallization kiln for sintering and crystallization at a temperature of 850-1400°C (aluminum-based composite material 850-950°C, copper-based composite material 900-1050°C, Iron-based composite material 1000-1400℃, time 60-240 minutes);

[0030] (4) The billet after step (3) crystallized into the ho...

Embodiment 1

[0035] In terms of parts by weight, the composition of the composite material of nepheline glass-ceramics and metal powder in this embodiment is as follows:

[0036] Glass-ceramic powder 30; iron powder 55 parts; other metal powder 10 parts (including tungsten powder, chromium powder, lithium powder, nickel powder, lead powder each 2 parts); whisker silicon 5 parts. In the present invention, the whiskers are silicon whiskers (also known as short silicon fibers, 2-15 microns in length and 0.001-0.002 microns in diameter).

[0037] The method for preparing the nepheline glass-ceramics and metal powder composite material of this embodiment, the specific steps are as follows:

[0038] (1) Grind the nepheline glass-ceramic water-quenched particles with a ball mill or other grinding equipment into 150 mesh fine powder, and then mix and grind 100-300 mesh metal powder and whiskers with the glass-ceramic powder for 2.5 hours;

[0039] (2) The mixed powder mixed uniformly in step (1) is molded...

Embodiment 2

[0046] The difference from Example 1 is:

[0047] In terms of parts by weight, the composition of the composite material of nepheline glass-ceramics and metal powder in this embodiment is as follows:

[0048] 70 parts of glass-ceramic powder; 20 parts of iron powder; 10 parts of other metal powder (including 2 parts of tungsten powder, chromium powder, lithium powder, nickel powder, and lead powder); 10 parts of whisker silicon.

[0049] The method for preparing the nepheline glass-ceramics and metal powder composite material of this embodiment, the specific steps are as follows:

[0050] (1) Grind the nepheline glass-ceramic water-quenched particles with a ball mill or other grinding equipment into 150 mesh fine powder, and then mix and grind the 100-300 mesh metal powder and whisker with the glass-ceramic powder for 2 hours;

[0051] (2) The mixed powder mixed uniformly in step (1) is molded by a 300-ton press, and determined according to the specifications of the blank, the pressure ...

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Abstract

The invention relates to novel technology for producing novel silicon-based composite material by mixing nepheline glass ceramic and metal, in particular to a nepheline glass ceramic and metal powder composite material and a preparation method thereof. Nepheline glass ceramic powder and the selectively matched metal powder are prepared into novel iron-based, copper-based and aluminum-based composite materials. The glass ceramic powder is mixed with the metal powder, and a whisker is added to realize regrowth so as to improve the toughness; therefore, a novel high-strength composite material is obtained. The preparation method comprises the following steps of: crushing the selectively matched nepheline glass ceramic powder into fine powder with the particle size of 100 to 300 meshes, mixing with the selected metal powder, pressing into a blank, sintering and crystallizing in a crystallization furnace, forming by using a second hot extrusion mold, toughening by using a belt kiln, annealing, and finishing to prepare a high-strength product. The nepheline glass ceramic and metal powder composite material overcomes the defect of low physical and chemical properties of pure metal, and reduces the cost by 50 to 80 percent compared with a metallurgical product of pure metal powder.

Description

Technical field [0001] The invention relates to the field of new materials, in particular to a composite material of nepheline glass-ceramics and metal powder and a preparation method thereof. The glass-ceramics powder and metal powder are mixed and whiskers are added to realize regrowth in order to improve toughness. In order to obtain a new high-strength composite material. Background technique [0002] In recent years, powder metallurgy technology has developed vigorously, but metal resources are limited. If nepheline glass-ceramics with silica as the main raw material are mixed with metal, not only a large amount of metal can be saved, but also the product performance can be improved, and the product performance can be greatly reduced. cost. However, the combination of glass and metal cannot be achieved with traditional methods and materials, because glass is an acid oxide and metal is an alkaline oxide. Summary of the invention [0003] The purpose of the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C47/14
Inventor 赵凤宇
Owner 赵凤宇
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