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Cold insert for metallographic sample preparation and preparation method of the cold insert

A technology of metallographic sample preparation and cold mounting materials, which is applied in the field of cold mounting materials, can solve the problems of inconvenient detection of sample compression strength, lack of clear graphics, and high price of cold mounting materials, so as to speed up the curing reaction and avoid Deformation and sagging of the coating, and the effect of meeting the requirements of subsequent hardness testing

Pending Publication Date: 2020-10-02
XIAN TELISON NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing cold mounting material has high price, low compressive strength, slow curing time, large curing shrinkage rate, inconvenient detection of compressive strength of the sample after mounting and curing, and metallographic sample preparation may easily lead to deformation or collapse of the coating (the edge of the sample appears Low, high in the middle, out of focus on the sagging part under the microscope, so no clear graphics can be obtained) and other issues

Method used

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  • Cold insert for metallographic sample preparation and preparation method of the cold insert
  • Cold insert for metallographic sample preparation and preparation method of the cold insert
  • Cold insert for metallographic sample preparation and preparation method of the cold insert

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a cold mounting material for metallographic sample preparation, comprising the following steps:

[0029] Step 1, pretreating the silicon carbide powder, specifically includes the following sub-steps:

[0030] Sub-step 1.1, uniformly mix 0.2g of γ-aminopropyltriethoxysilane with 10mL of absolute ethanol to obtain an organic solution;

[0031] In sub-step 1.2, add 10 g of silicon carbide powder with a particle size of 2 μm to the organic solution, stir evenly, and let it stand in a fume hood until the absolute ethanol has evaporated completely, then put it in an oven at 110°C for 30 minutes, and cool it to room temperature to obtain the prepared product. Processed silicon carbide powder.

[0032] Step 2: Mix evenly 4g of pretreated silicon carbide powder with 100g of 618 epoxy resin and 7g of ethylenediamine to obtain the product.

Embodiment 2

[0034] A method for preparing a cold mounting material for metallographic sample preparation, comprising the following steps:

[0035] Step 1, pretreating the silicon carbide powder, specifically includes the following sub-steps:

[0036] Sub-step 1.1, uniformly mix 0.2g of γ-aminopropyltriethoxysilane with 10mL of absolute ethanol to obtain an organic solution;

[0037] In sub-step 1.2, add 10 g of silicon carbide powder with a particle size of 44 μm to the organic solution, stir evenly, and let it stand in a fume hood until the absolute ethanol has evaporated completely, then put it in an oven at 110°C for 30 minutes, and cool it to room temperature to obtain the prepared product. Processed silicon carbide powder.

[0038] Step 2: Mix evenly 4g of pretreated silicon carbide powder with 100g of 618 epoxy resin and 7g of ethylenediamine to obtain the product.

Embodiment 3

[0040] A method for preparing a cold mounting material for metallographic sample preparation, comprising the following steps:

[0041] Step 1, pretreating the silicon carbide powder, specifically includes the following sub-steps:

[0042] Sub-step 1.1, uniformly mix 0.2g of γ-aminopropyltriethoxysilane with 10mL of absolute ethanol to obtain an organic solution;

[0043] In sub-step 1.2, add 10 g of silicon carbide powder with a particle size of 2 μm to the organic solution, stir evenly, and let it stand in a fume hood until the absolute ethanol has evaporated completely, then put it in an oven at 110°C for 30 minutes, and cool it to room temperature to obtain the prepared product. Processed silicon carbide powder.

[0044] Step 2: Mix 3g of pretreated silicon carbide powder with 100g of 618 epoxy resin and 7g of ethylenediamine to obtain the product.

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Abstract

The invention belongs to the field of cold inserts, and discloses a cold insert for metallographic sample preparation and a preparation method of the cold insert, the cold insert comprises the following raw materials: pretreated silicon carbide powder, epoxy resin and ethylenediamine; the pretreated silicon carbide powder comprises gamma-aminopropyltriethoxysilane, absolute ethyl alcohol and silicon carbide powder; the cold insert combines the characteristic of high hardness of silicon carbide and the characteristics of excellent chemical stability and dimensional stability of cured epoxy resin; The method has the advantages that the cost is low, the compression strength is high, the subsequent hardness detection requirement is met, meanwhile, the formation of plating deformation and edgecollapse in metallographic sample preparation is avoided, the curing time is short and the curing shrinkage rate is small; the preparation method is simple and easy to operate and implement, and the method can be used for metallographic samples of metals and alloys thereof, nonmetals such as ceramics and glass.

Description

technical field [0001] The invention relates to the field of cold mounting materials, in particular to a cold mounting material for metallographic sample preparation and a preparation method thereof. Background technique [0002] The mosaic link in metallographic sample preparation mainly performs the functions of fixing, positioning and standardizing the sample. After mosaic and solidification, the sample needs to continue to be tested for mechanical properties, such as hardness testing. Therefore, the compressive strength of the mounting compound needs to be sufficiently high. [0003] The cold mounting material is to embed and cover the cut sample with liquid resin in a fixed film cavity, and the liquid resin is solidified and released from the mold, thereby forming a standard shape of the mosaic sample. Cold mounting materials are mainly suitable for samples that are sensitive to temperature or pressure. They are divided into two types: epoxy resin and acrylic resin. Th...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08K9/06C08K3/34G01N1/36
CPCC08K9/06C08K3/34G01N1/36C08K2201/005C08L63/00
Inventor 王奇董文卫姜海涛陈飞刘颖波
Owner XIAN TELISON NEW MATERIAL