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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.

​XRF, EDS, and ICP technologies are commonly used in material analysis, allowing businesses to study and identify different elements and materials. These technologies are integral to research, development, and the production of new products. In this blog post, we will discuss the benefits and applications of XRF, EDS, and ICP technology.

Spherical silica micro powder has excellent properties such as high transparency, high dielectric, high moisture resistance, high filling amount, low expansion, low stress, and low friction coefficient. It is widely used in many fields such as epoxy molding materials, catalysts, copper clad panels, adhesives, and aerospace.

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.

There are different methods to measure the particle size of powders, depending on the size range of the particles and the desired accuracy of the measurement. Here are some common techniques:

​Perovskite Quantum Dots (PeQDs) are naturally suited for high-end displays due to their superior color purity and solution-processability. However, the industry has long struggled with a critical bottleneck: how to translate the theoretical "superlattice order" into actual "device performance."