Non-ferrousmetal, also called non-ferrous metal in a narrow sense, is the general name of all metals except iron, manganese and chromium. Nonferrous metals in a broad sense also include nonferrous alloys.
Non-ferrous alloy is an alloy with non-ferrous metal as the matrix (usually more than 50%) and one or several other elements added. Nonferrous metals usually refer to all metals except iron (sometimes including manganese and chromium) and iron-based alloys. Nonferrous metals can be divided into heavy metals (such as copper, lead and zinc), light metals (such as aluminum and magnesium), precious metals (such as gold, silver and platinum) and rare metals (such as tungsten, molybdenum, germanium, lithium, lanthanum and uranium).
The specific surface area of nonferrous metals is also important. The test data of specific surface area of nonferrous metals are only true and reliable by BET method. Many domestic instruments can only do direct comparison tests, and they have also been eliminated in China. Multi-point BET method is used to measure specific surface area at home and abroad, and the standards for measuring specific surface area at home and abroad are based on BET method. Please refer to China's national standard (GB/T19587-2004)-the method of measuring the specific surface area of solid matter by gas adsorption BET principle.
Detection of specific surface area is actually a time-consuming work. Due to the different adsorption capacity of samples, the testing of some samples may take a whole day. If the test process is not fully automated, the tester can't leave all the time. He should be highly concentrated, observe the dashboard and control the knob. A little carelessness will lead to the failure of the testing process and waste a lot of valuable time for testers.
Only the truly automatic intelligent specific surface area tester products meet the international standards of the testing instrument industry. The international similar products are fully automatic, and the manually operated instruments have long been eliminated abroad. The real full-automatic intelligent specific surface area analyzer liberates testers from repeated mechanical operations, greatly reduces their work intensity, is simple in training, and improves work efficiency. The real full-automatic intelligent specific surface area analyzer greatly reduces errors caused by manual operation and improves test accuracy.