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A method for detecting the particle size of silicon carbide micropowder by resistance method

A technology of silicon carbide micropowder and resistance method, which is applied in particle size analysis, preparation of test samples, measuring devices, etc., can solve the problems affecting the excellent performance and the dispersibility of silicon carbide, so as to improve the detection efficiency, improve the dispersion effect, The effect of improving detection accuracy and detection efficiency

Active Publication Date: 2016-03-16
PINGDINGSHAN YICHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the industrial production process of silicon carbide micropowder, because the powder particles absorb a large amount of mechanical energy and heat energy, the surface has a relatively high specific surface energy, so that the particles are in an extremely unstable state and have a tendency to agglomerate. This factor will Seriously affect the dispersion of silicon carbide, thus affecting the full play of its excellent properties

Method used

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  • A method for detecting the particle size of silicon carbide micropowder by resistance method
  • A method for detecting the particle size of silicon carbide micropowder by resistance method
  • A method for detecting the particle size of silicon carbide micropowder by resistance method

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Embodiment 1

[0022] Embodiment 1: a kind of method that resistance method detects the particle size of silicon carbide micropowder, it is characterized in that: concrete steps are as follows:

[0023] Step 1: extract 10 mg from a batch of silicon carbide micropowder produced as a sample to be tested, and set aside;

[0024] Step 2: Take the sample to be tested and put it in the container, add 50mL of pure water, control the water temperature at 25°C, stir for 5 minutes, and set aside.

[0025] Step 3. Place the container on the lifting platform in the ultrasonic cell crushing soundproof box, lift the lifting platform so that the ultrasonic probe is immersed 1.0cm below the liquid surface, and the output ultrasonic power is 325W, perform ultrasonic treatment on the silicon carbide solution for 3 minutes, and set aside;

[0026] Step 4. Take out the container after step 3 and let it stand for 1 minute, then add pure water to the container again, the quality of the added pure water is 0.1 tim...

Embodiment 2

[0029] Embodiment 2: a kind of method for detecting the particle size of silicon carbide micropowder by resistance method, is characterized in that: concrete steps are as follows:

[0030] Step 1: Take a part of the produced batches of silicon carbide micropowder as samples to be tested and set aside;

[0031] Step 2: Put the sample to be tested in the container, add pure water, the water temperature is controlled at 35°C, the quality of the pure water added is 1000 times the mass of the sample to be tested, then stir for 10 minutes, and set aside;

[0032] Step 3. Place the container on the lifting platform in the ultrasonic cell crushing soundproof box, lift the lifting platform so that the ultrasonic probe is immersed 1.5cm below the liquid surface, and the output ultrasonic power is 325W, perform ultrasonic treatment on the silicon carbide solution for 5 minutes, and set aside;

[0033] Step 4. Take out the container after the treatment in step 3 and let it stand for 2 min...

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Abstract

A method for detecting the particle size of silicon carbide micropowder by resistance method, the steps are as follows: put the sample to be tested in a container, add pure water, then stir, and set aside, then place the container in an ultrasonic cell pulverizer and place it in a soundproof box for dispersion treatment, the first After the first treatment is completed, take it out and let it stand for 1-2 minutes, then add pure water into the container again, the quality of the added pure water is 0.1-0.2 times the mass of the silicon carbide micropowder slurry in the container, shake it evenly and set aside, and then carry out ultrasonic dispersion treatment again , the treatment is completed, the silicon carbide solution is dispersed, and it is ready for use; the COULTER particle counter is used to detect the particle size of the silicon carbide powder; this method is the first to use multiple ultrasonic cell crushing and vibration treatments in the particle size detection of the silicon carbide powder, and the adjustment is optimal The oscillating power and processing time are used to disperse the agglomerated particles of silicon carbide micropowder in an intermittent manner. This method minimizes the existence of false "large particles" and improves detection accuracy and efficiency.

Description

technical field [0001] The invention relates to a method for detecting the particle size of silicon carbide powder, in particular to a method for detecting the particle size of silicon carbide powder by resistance method. Background technique [0002] In the industrial production process of silicon carbide micropowder, because the powder particles absorb a large amount of mechanical energy and heat energy, the surface has a relatively high specific surface energy, so that the particles are in an extremely unstable state and have a tendency to agglomerate. This factor will Seriously affect the dispersibility of silicon carbide, thereby affecting the full play of its excellent properties. Especially in the field of crystalline silicon wire cutting, when silicon carbide micropowder particles are agglomerated, false "large particles" will be formed, and these factors will affect the next step of wire cutting. In addition, ultra-fine silicon carbide micropowder also has importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02G01N1/28
Inventor 曲丽伟梁贵振夏军杨正宏叶小迷张向峰苏燕张强
Owner PINGDINGSHAN YICHENG NEW MATERIAL