China Copper ion antibacterial additive Manufacturers, Suppliers, Factory

Copper is different from metals such as aluminum and nickel in that it is difficult to form a dense and stable intrinsic passivation layer on its surface. Therefore, the exposed copper surface will be continuously oxidized and corroded by oxygen and water vapor in the air. The smaller the particle size and larger the specific surface area of copper powder, the easier it is to rapidly oxidize to produce products such as cuprous oxide (Cu2O) and copper oxide (CuO). This oxide insulation layer significantly reduces the conductivity of copper powder and hinders particle sintering connection, resulting in degradation of the performance of the conductive paste.

Silver coated copper technology is a composite metal material technology, and its core product silver coated copper powder is composed of copper in the core and silver shell covering its surface. A typical silver layer thickness is between 50-200 nanometers, with a silver content (mass ratio) of 5% -30%. In this structure, the copper core plays a role in providing low cost and high conductivity, while the silver shell is crucial in ensuring that the particles resist oxidation during processes such as pulping and printing, while forming good ohmic contact with the battery silicon wafer or TCO film. After sintering, the silver shell acts as a conductive medium, ensuring low contact resistance and reliable adhesion of the electrode, while the copper core reduces material costs while endowing the slurry with certain mechanical strength and thermal stability.

Aluminum nitride is a ceramic material with high melting point, hardness, and thermal conductivity, as well as good thermal stability and corrosion resistance. Its crystal structure is hexagonal, thus requiring high temperatures and pressures in the preparation process. Due to these excellent properties, aluminum nitride has been widely used in high-temperature electronic devices, thermal conductivity materials, and other fields.

In the fields of materials science, catalysis, energy and environment, specific surface area is one of the important parameters for measuring material performance. The adsorption efficiency of activated carbon, the activity of catalysts, and the energy storage performance of electrode materials are often closely related to their surface area. The most widely used surface area measurement method currently is BET specific surface area testing. This article will provide a detailed analysis of BET testing from several aspects, including principles, sample preparation, data processing, and precautions.

There are three main methods for preparing single-walled carbon nanotubes: arc method, laser ablation method, and chemical vapor deposition (CVD) method.

In the future, with the upgrading of green manufacturing and the demand for functional glass, the application of magnesium oxide will develop towards refinement: on the one hand, the mechanical and optical properties of glass will be further improved by doping with nano MgO (particle size<50 nm); On the other hand, by combining AI driven component design, a new MgO based glass system (such as MgO Li ₂ O-ZrO ₂ low melting point glass) can be developed to adapt to flexible electronics and hydrogen energy storage and transportation applications. The value of magnesium oxide in glass composition is shifting from a "performance regulator" to a "functional enabler", driving the evolution of glass materials towards higher performance and wider scenarios.