Aircraft and aluminum alloy speedboats are made of aluminum alloy materials. According to their structural characteristics, functional requirements and environmental characteristics, these materials not only require certain mechanical properties and process properties, but also have different requirements in physical and chemical properties. According to the design requirements, each structural component of the equipment is selected according to the performance requirements, and has its own material grade and processing method. Therefore, its chemical composition is certain, the performance of the final product is also certain, and the chemical composition is unqualified. Must be determined by component analysis. Therefore, chemical composition analysis is very important.
There are many methods for analyzing the chemical composition of technical materials, mainly from the chemical analysis of the Fahrenheit instrument analysis.
(1) Chemical analysis
Chemical analysis is a chemical reaction-based analytical method, which can be further divided into gravimetric analysis. In addition, there are colorimetric methods and conductance. Chemical analysis requires sampling from the object to be tested, so it is destructive.
(2) Instrumental analysis
Instrumental analysis is an analytical method based on the physical or physical and chemical properties of a substance. Instrumental analysis needs to convert the physical, electrical, thermal, and other physical quantities or chemical energy of the object to be tested into electrical signals, and then compare them with the electrical signals obtained by the known materials under the same conditions to measure the chemistry of these substances. Composition, content and structure. The measurement of these physical quantities of chemical quantities generally requires the use of specialized equipment. Commonly used instruments and analytical methods are spectral discrimination, photoelectric colorimetric analysis, Jeep analysis, electron probe and ion probe microanalysis. Spectral analysis mainly includes: emission spectrum analysis, which is qualitative and quantitative analysis by measuring the wavelength and intensity of the emission spectrum of the substance; atomic absorption spectrometry, X-ray fluorescence spectrometry;
X-ray fluorescence spectrometers can use radioactive isotopes as excitation sources in addition to X-rays, which makes the instrument simple in structure, small in size, easy to carry and on-site analysis operations.