Simple method for detecting aperture ratio of foam metal with network-shaped through hole structure

A metal foam and detection method technology, applied in the direction of testing metal, testing metal structures, material inspection products, etc., can solve the problems of cumbersome and inconvenient measurement

Pending Publication Date: 2021-07-16
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the weighing of the sample containing liquid will have corresponding auxiliary equipment and high requirements for operation, which will bring certain cumbersome inconvenience to the measurement.

Method used

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  • Simple method for detecting aperture ratio of foam metal with network-shaped through hole structure
  • Simple method for detecting aperture ratio of foam metal with network-shaped through hole structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Embodiment: The sample to be tested is a nickel foam product produced by a certain enterprise, and its pore structure and morphology can be found in figure 1 . The size of the cut bulk sample is roughly 20cm×20cm×5.5mm, and the rough measurement of its pore size is below 1mm. In order to obtain more comprehensive statistical data, 4 small samples with a size of about 50mm×40mm×5.5mm were cut from 4 different parts of the sheet to be inspected. Clean the sample successively with acetone ultrasonic cleaning, clean water ultrasonic cleaning, and alcohol ultrasonic cleaning for 10 minutes each, and put them together into a volume scale of 0.5ml (that is, 0.5cm 3 ) in a clean measuring cup. Pour 80ml of deionized water into the graduated cylinder, ensuring that there is a sufficient level of liquid above the sample while submerging all the samples. Then place it in a cold water bath for 10 minutes of ultrasonic vibration, and deionized water is fully immersed in the open ...

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Abstract

The invention relates to a method for detecting the aperture ratio of foam metal with a network-shaped through hole structure, which is a simple and convenient detection method without detecting any weight index of a sample and is also applicable to foam metal with a similar structure as long as the foam metal has an open pore structure. According to the method, the aperture ratio of the test sample is directly calculated by measuring the apparent volume (the volume of the space occupied by the outer contour of the test sample) of the foam metal test sample and the volume of the working liquid immersed in the pores of the test sample. As any weight index of the sample does not need to be measured, the measurement operation is simple and convenient.

Description

Technical field: [0001] The present invention relates to a method for detecting the open porosity of metal foam, in particular to a method for detecting the open porosity of metal foam with a network through-hole structure. A simple method to detect its porosity. Background technique: [0002] Porous materials have application advantages that other materials cannot replace in many engineering fields [1-6] . Among all kinds of porous materials, the production scale of metal foam with network structure is relatively large, and its practical application occupies a very important position. Network metal foam is an open-cell porous material with interconnected internal pores, suitable for all occasions that require pore connectivity and use of internal pore surfaces, such as split flow filtration, heat exchange, biological transplantation, catalytic engineering, etc. [5] . [0003] The pores in the metal foam have the form of open connected pores and isolated closed pores, am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/204
CPCG01N33/204
Inventor 宋帅刘培生顷淮斌
Owner BEIJING NORMAL UNIVERSITY
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