Polishing liquid for metallographic analysis and preparation method and application method thereof

A technology of metallographic analysis and polishing liquid, which is applied in the field of polishing liquid, can solve the problems of sticky paste, expensive, difficult to disperse, etc., and achieve the effect of fine solid particles, low price and good fluidity

Inactive Publication Date: 2016-04-20
黄志华
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polishing paste used in the prior art is common powder such as cerium oxide and chromium oxide as the polishing paste. Most of the commercially available polishing pastes are yellow. In the actual process of metallographic sample preparation, the colored polishing powder is very easy to stain the test surface Stained, or hidden in the joint between the metal sample and the mosaic, it dissolves out during corrosion, affecting the surface effect of corrosion
At the same time, these polishing pastes are often viscous and difficult to disperse due to the stability and uniformity of these polishing pastes. for fine polishing
There are also polishing pastes using diamond powder as polishing powder, but the price is extremely expensive

Method used

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  • Polishing liquid for metallographic analysis and preparation method and application method thereof

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Embodiment Construction

[0055] The content of the present invention is further described below by way of examples.

[0056] The composition and content of the stainless steel polishing paste in the examples are shown in the table below, and the remaining dispersion medium is deionized water.

[0057]

[0058] The average particle size of alumina powder and mullite powder in the raw materials is 30 μm, and the polishing paste preparation method is as follows:

[0059] (1) Dissolve sodium dodecyl sulfonate, nonylphenol polyoxyethylene ether, triglycerol monostearate, and triethanolamine in absolute ethanol;

[0060] (2) Dissolving potassium pyrophosphate and potassium tripolyphosphate in deionized water;

[0061] (3) Mix the ethanol solution and the aqueous solution and stir evenly;

[0062] (4) Put alumina powder and mullite powder into the above mixed solution;

[0063] (5) Put the above mixture into a high-speed disperser and disperse at a speed of 4500r / min for 4 hours;

[0064] (6) The disp...

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Abstract

The invention discloses polishing liquid for metallographic analysis. Aluminum oxide powder and mullite powder serve as polishing powder; sodium dodecyl sulfate, nonyl phenol polyoxyethylene ether, tripolyglycerol monostearate, triethanolamine, potassium pyrophosphate and potassium tripolyphosphate serve as additives; and anhydrous ethanol and water serve as dispersion mediums. The polishing liquid for metallographic analysis is suitable for metallographic sample preparation polishing of hard alloys; solid particles of the polishing liquid are exquisite, and are high in hardness; and the polishing liquid can effectively and finely polish the hard alloys, and is excellent in fluidity, low in cost and incapable of causing the dyeing trouble to metallographic test surfaces.

Description

technical field [0001] The invention relates to a polishing liquid containing polishing powder, in particular to a polishing liquid suitable for hard alloy metallographic polishing. Background technique [0002] Metallographic analysis is one of the main methods to study the internal structure defects of metals and alloys, and occupies a very important position in the field of metal materials research. The metallographic microscope can magnify the sample method 50-1500 times to study the structure of metals and alloys. It is the most basic experimental technique for studying the microstructure of metal materials. The process of metallographic sample preparation can be divided into several processes, including cutting and sampling, sample mounting, mechanical grinding, and mechanical polishing. The cutting and sampling process is to cut off the metal samples to be inspected, and the cutting is to cut the metal block to be analyzed into a size suitable for mosaic. Mounting s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/00G01N1/32
CPCC23F3/00G01N1/32
Inventor 黄志华
Owner 黄志华
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