Краткое описание характеристик обнаружения и метода обнаружения металлического порошка
Металлический порошок представляет собой мелкий металлический порошок., обычно изготавливается путем химического восстановления металла, механическое измельчение или распыление, и т. д.. They have the characteristics of many metals, such as high electrical conductivity, high thermal conductivity, устойчивость к коррозии, high temperature performance, и т. д.. Metal powders can be used in a variety of applications, such as the preparation of metal materials in electronic devices, автомобильный, аэрокосмический, строительство, металлургия, и т. д., and added to coatings, краски, чернила, резина, и т. д., to increase their electrical conductivity, thermal conductivity, устойчивость к коррозии, и т. д.. Кроме того, metal powder is also widely used in powder metallurgy, 3D printing, thermal spraying and other fields.
Производительность обнаружения
The following is a table of common properties of metal powder to be detected and the detection methods:
| Производительность | Описание | Метод обнаружения |
|---|---|---|
| Распределение частиц по размерам | Size and distribution of metal powder particles | Лазерный анализатор размера частиц, микроскоп |
| Химический состав | The content and proportion of each element in the metal powder | Рентгенофлуоресцентная спектроскопия, ИСП-МС, химический анализ |
| Чистота вещества | Purity and impurity content of metal powder | ICPOES, thermogravimetric analysis, GC-MS |
| Плотность плотности | Density and porosity of metal powder | Buoyancy method, mercury injection method, микроскоп |
| Magnetic properties | Magnetic properties of metal powders | Vibration sample magnetometer, hysteresis loop test |
| Properties of surface | Surface morphology, chemical reaction and chemical composition of metal powder | Scanning electron microscopy, X-ray photoelectron spectroscopy, химический анализ |
Краткое описание характеристик обнаружения и метода обнаружения металлического порошка
Мы напоминаем вам: different metal powders may require different detection methods, the specific choice of which method needs to be determined according to the nature of the sample and the required detection accuracy.
Конкретный метод обнаружения
The following are detailed instructions on metal powder testing:
Particle size and particle size distribution: The particle size and particle size distribution were measured by laser particle size meter, dynamic light scatterer and other instruments.
Плотность: measured by hydrometer or gas specific gravity method.
Термогравиметрический анализ: Термогравиметрический анализатор (ТГА) or differential thermal analyzer (ДСК) can be used to test the thermal stability and thermal decomposition temperature of materials.
Химический состав: Commonly used methods are X-ray fluorescence spectroscopy (РФА) and atomic absorption spectroscopy (AAS).
Краткое описание характеристик обнаружения и метода обнаружения металлического порошка
Surface properties: Commonly used surface analysis methods include scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM).
Magnetism: The magnetic properties of materials are tested through devices such as superconducting quantum interferometers (SQUID) and Hall effect meters.
Electrical conductivity: Instruments such as four-probe resistance testers can be used to test the electrical conductivity of materials.
Оптические свойства: It can be used to test the absorption and transmission spectrum of materials, as well as the optical properties such as fluorescence spectrum by UV-Vis spectrophotometer.
Mechanical properties: Commonly used mechanical properties testing methods include tensile, сжатие, bending and other experiments, as well as materials testing machines and other instruments to test the mechanical properties of materials.
These test methods need to be selected according to the specific types and properties of metal powder, and combined with a variety of means for comprehensive analysis.