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Method for detecting bronze powder for microwave plasma nozzle

A technology of microwave plasma and detection method, applied in the field of plasma, can solve the problems of nozzle oxidation loss and the like, and achieve the effect of good microwave transmission efficiency

Inactive Publication Date: 2019-01-18
安徽新芜精密装备制造产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Microwave plasma nozzles also have failures such as oxidation loss due to high temperature during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for detecting the water surface coverage of bronze powder for microwave plasma nozzles, comprising the following steps: coating paraffin wax on the inner wall of a test container, then pouring water into the test container, and then evenly scattering the bronze powder to be tested on the water surface of the test container , disperse the bronze powder to be tested accumulated on the water surface to the water surface, measure the surface area of ​​the bronze powder to be tested water surface covering layer, calculate the bronze powder to be tested water surface coverage A according to the following formula:

[0027] A=S / d

[0028] Among them, S is the surface area of ​​the bronze powder water surface covering layer to be tested, cm 2 ; d is the quality of bronze powder to be tested, g;

[0029] If A≥850cm 2 / g, the water coverage of the bronze powder to be tested is qualified; if A2 / g, the water coverage of the bronze powder to be tested is unqualified.

Embodiment 2

[0031] A method for detecting water surface coverage of bronze powder for microwave plasma nozzles, comprising the steps of: coating paraffin wax on the inner wall of a test container, the test container is a rectangular container containing two glass plates, and the size of the rectangular container is 50cm × 20cm × 10cm, the size of the glass plate is 50cm×2~3cm, then pour water into the test container, then evenly scatter the bronze powder to be tested on the water surface of the test container, disperse the bronze powder to be tested accumulated on the water surface to the water surface, and measure The surface area of ​​the bronze powder water surface cover to be measured is calculated according to the following formula to measure the bronze powder water surface coverage A:

[0032] A=S / d

[0033] Among them, S is the surface area of ​​the bronze powder water surface covering layer to be tested, cm 2 ; d is the quality of bronze powder to be tested, g;

[0034] If A≥850...

Embodiment 3

[0037] A method for detecting bronze powder for microwave plasma nozzles proposed by the present invention includes: appearance detection, sieving detection, water surface coverage detection, and chemical detection;

[0038] During the appearance inspection process, the bronze powder to be tested is a finely ground golden yellow powder without impurities and lumps.

[0039] During the sieving and testing process, the bronze powder to be tested should be able to pass through a 650-mesh sieve, and the remaining amount after sieving with a 1500-mesh sieve must not exceed 20%.

[0040] During the testing process of water surface coverage, paraffin wax is coated on the inner wall of a rectangular container containing two glass plates with a size of 50cm×2~3cm. The size of the rectangular container is 50cm×20cm×10cm, and the surface of the glass plate is also coated with paraffin wax, and then Pour water into the rectangular container; form a limited area on the water surface of the...

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PUM

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Abstract

The invention discloses a method for detecting bronze powder for a microwave plasma nozzle. The method comprises the steps of appearance detection, screening detection, water surface covering power detection method for bronze powder for the microwave plasma nozzle, and chemical detection. The invention discloses a method for detecting the water surface covering power of bronze powder for a microwave plasma nozzle, comprising the following steps: coating paraffin on the inner wall of a test container, then injecting water into the test container, uniformly scattering the bronze powder to be tested on the water surface of the test container, dispersing the bronze powder to be tested accumulated on the water surface on the water surface, measuring the surface area of the water surface covering layer of the bronze powder to be tested, calculating the water surface covering power A of the bronze powder to be tested; determining that the water surface covering power of the bronze powder to be tested is qualified if A is greater than or equal to 850cm2 / g; and determining that the water surface covering power of the bronze powder to be tested is unqualified if A is less than 850cm2 / g.

Description

technical field [0001] The invention relates to the field of microwave plasma technology, in particular to a method for detecting bronze powder for microwave plasma nozzles. Background technique [0002] At present, low-temperature plasma (temperature is 2000 ~ 50000K) has been widely used, and has become an important process in industry, such as cutting, welding and spraying with plasma arc; manufacturing various novel light sources and displays; direct conversion of thermoelectricity magnetic fluid power generation, etc. In the chemical sector, plasma chemistry has become a very active new field. In the microelectronics industry, plasma etching and vapor deposition are widely used. [0003] Plasma generated by microwave excitation is called microwave plasma. As an emerging technology, microwave plasma has a high degree of ionization and decomposition, can maintain plasma under high pressure, has no internal electrodes, and the plasma generator can maintain a long life. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/00G01N33/0091
Inventor 江祝苗
Owner 安徽新芜精密装备制造产业技术研究院有限公司