Micron-sized metal powder metallic phase mounting method

A metal powder and metallographic sample mounting technology, applied in the preparation of test samples, etc., to achieve the effect of low equipment requirements, high practical application value, and low input cost

Active Publication Date: 2010-12-01
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, there is no metallographic mounting method that is easy to operate, has good metallographic mounting effects and is suitable for micron-sized metal powders in the market.

Method used

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  • Micron-sized metal powder metallic phase mounting method
  • Micron-sized metal powder metallic phase mounting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this embodiment, the micron-scale metal powder to be inlaid is TaWHf powder with an average particle size of 200 μm, and when the TaWHf powder is metallographically mounted, the process is as follows: first, in a container, mix the TaWHf powder with fine black bakelite Mix the powder according to the volume ratio of 1:1 to obtain the mixed powder. The fine black bakelite powder used is black bakelite powder with a particle size of 60 μm to 100 μm; In the machine cavity and the layer thickness of the mixed powder layer is 6mm, and then spread a layer of fine black bakelite powder with a thickness of 6mm on the already laid mixed powder layer, and the fine black bakelite powder used has a particle size of 60μm~ 100 μm black bakelite powder, and then fill the coarse black bakelite powder on the fine black bakelite powder layer that has been laid until the machine cavity of the hot mounting machine is filled and the coarse black bakelite powder used has a particle size of...

Embodiment 2

[0039]In this embodiment, the micron-scale metal powder to be inlaid is TaW12 powder with an average particle size of 170 μm, and when the TaWHf powder is metallographically mounted, the process is as follows: first, in a container, mix the TaWHf powder with fine black bakelite The powder is mixed according to the volume ratio of 1:1 to obtain the mixed powder. The fine black bakelite powder used is black bakelite powder with a particle size of 50 μm to 80 μm; In the machine cavity and the layer thickness of the mixed powder layer is 5mm, and then spread a layer of fine black bakelite powder with a thickness of 5mm on the already laid mixed powder layer, and the fine black bakelite powder used has a particle size of 50μm~ 80 μm black bakelite powder, and then fill the coarse black bakelite powder on the fine black bakelite powder layer that has been laid until the machine cavity of the hot mosaic machine is filled and the coarse black bakelite powder used has a particle size of...

Embodiment 3

[0042] In this embodiment, the micron-sized metal powder to be inlaid is Ti powder with an average particle diameter of 25 μm, and when the Ti powder is metallographically mounted, the process is as follows: first, put the Ti powder and fine black Bakelite in a container The powder is mixed according to the volume ratio of 1:2 to obtain the mixed powder. The fine black bakelite powder used is black bakelite powder with a particle size of 30 μm to 60 μm; In the machine cavity and the layer thickness of the mixed powder layer is 3mm, and then spread a layer of fine black bakelite powder with a thickness of 1mm on the laid mixed powder layer and the particle size of the fine black bakelite powder used is 30μm~ 60 μm black bakelite powder, and then fill the coarse black bakelite powder on the fine black bakelite powder layer that has been laid until the machine cavity of the hot mosaic machine is filled and the coarse black bakelite powder used has a particle size of 400 μm~1mm Bl...

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Abstract

The invention discloses a micron-sized metal powder metallic phase mounting method, comprising the following steps: 1, mixing powder, i.e. evenly mixing micron-sized metal powder to be mounted and fine black bakelite powder at the volume ratio of 1:1-1:2 to obtain blended powder; 2, powder loading, i.e. tiling the blended powder, tiling the fine black bakelite powder and filling thick black bakelite powder; and 3, mounting, i.e. additionally arranging the press block of a warmeinbettpresse, starting the warmeinbettpresse, and carrying out hot mounting on the micron-sized metal powder to be mounted by the conventional hot mounting method at the temperature of 120+/-20 DEG C for 40 min-50 min. The invention has reasonable design, simple operation, easy control, low requirements on devices and good use effect, and can finish simple, convenient and high-quality metallic phase mounting on various metal powders with the average grain size no larger than 200 mu m; and the test requirements of test methods of powder grain section tissue topography, components, hardness performance and the like on a sample can be satisfied after the metallic phase mounting is carried out.

Description

technical field [0001] The invention relates to a metal powder sample mounting method, in particular to a micron-sized metal powder metallographic sample-mounting method in a micron-sized metal powder sample preparation process. Background technique [0002] Powder metallurgy technology is widely used in material forming process, and some performance parameters of powder particles in powder metallurgy technology are of great value. Therefore, in addition to studying the characteristics of the powder surface, some characteristic properties of the powder cross-section, such as the shape, hardness, and composition distribution of the powder, also have important application values. Therefore, metallographic mounting of metal powders in practice method is also gaining more and more attention. However, currently, there is no metallographic mounting method that is easy to operate, has good metallographic mounting effects and is suitable for micron-sized metal powders in the market...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 白新房张小明张于胜李波孙宝莲
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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