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1. Antibacterial agents and their classification Antibiotics refer to drugs that can inhibit bacterial growth, damage their living environment, and effectively and continuously exert their effects. Antibacterial agents are divided into two categories: organic antibacterial agents and inorganic antibacterial agents. Among them, organic antibacterial agents include natural and synthetic types, while...
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Nickel based high-temperature alloy powder are a type of metal material specially designed to withstand high temperature, high pressure, and corrosive environments, and are very suitable for use under extreme conditions. They are mainly composed of nickel, chromium, and iron, and elements such as molybdenum, cobalt, niobium, titanium, and aluminum are often added to enhance their performance. Clas...
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Titanium dioxide is mainly divided into three types: plate titanium dioxide, anatase titanium dioxide, and rutile titanium dioxide. Rutile titanium dioxide and anatase titanium dioxide are two important types of titanium dioxide, which are currently the most widely used in the market. However, their properties differ greatly. Difference in Chemical property Titanium dioxide has extremely stable ch...
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As one of the most important characterization parameters of nano powder, particle size directly affects the physical and chemical properties of the powder, and then affects the performance of the final product. Therefore, its detection technology is an important tool for industrial production and quality management, and plays an irreplaceable role in improving product quality, reducing production ...
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In recent years, with the rapid development of 3D printing technology, NiTi alloy powder has attracted much attention as a key raw material for biomedical implants. As the foundation of 3D printing, the quality of powder raw materials is crucial, and the plasma rotating electrode atomization method has attracted much attention. Preparation method of plasma rotating electrode The PREP method is use...
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1. Classification of Scanning Electron Microscopes Scanning electron microscopy can be divided into thermal electron emission type and field emission type according to the different ways of electron generation. The filament used for thermal electron emission type is mainly tungsten filament electron microscopy. Field emission type The distinction between hot field emission and cold field emission....
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The sintering of materials involves at least two processes: densification of the body and growth of grains in the body. The longevity of grains is usually achieved through the movement of grain boundaries. According to the classical theory of grain growth kinetics, the difference in free energy between the two sides of a curved grain boundary is the driving force that causes the interface to move ...
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After purchasing our company's nano iron oxide powder, the customer found that the particle size was larger during testing. Why is that? Because the particle size of nano powder is very fine, it is easy to agglomerate, so the large particle size tested is the particle size after agglomeration. So how can we effectively disperse nano iron oxide powder? Next, we will introduce how to use ultrasonic ...
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Scanning electron microscope (SEM) is a key tool for modern scientific exploration of the microscopic world. It plays an irreplaceable role in scientific research and industrial applications by enabling us to gain insights into the microscopic structure of matter through high-resolution electronic imaging technology. SEM scans the surface of the sample with a high-energy electron beam to collect s...
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The reasons for peak shift in XRD (X-ray diffraction) usually involve changes in the properties of the sample itself or the influence of experimental conditions, which can be analyzed from the following aspects: 1. Sample factors 1.1 Residual stress or lattice strain Residual stress: Residual stress inside the material (such as compressive stress or tensile stress) can cause changes in the lattice...
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The major limitations on TEM performance are spherical aberration (also known as aberration), chromatic aberration, and astigmatism. The spherical aberration and chromatic aberration limit the resolution of traditional TEM. Both of these defects are inevitable when using static rotational symmetric electromagnetic fields. Ball aberration is the most important factor determining the performance of ...
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High entropy alloys (HEAs) are a new type of structural material composed of five or more elements in nearly equal atomic ratios, exhibiting characteristics such as high entropy effect, lattice distortion effect, slow diffusion effect, and cocktail effect. Laser cladding technology can significantly improve the hardness, wear resistance, and corrosion resistance of HEAs cladding layers due to its ...
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