Quality Control of Diamond Micro-powder Particle Size

Quality control of diamond micro-powder particle size is an important link in the process of production. As the particle size of diamond micro-powder belongs to micron grade and submicron grade, these micro-powder are invisible to operators by their naked eyes, so the quality control of diamond micro-powder particle size is very difficult. Only advanced equipment, manufacturing technology, strict production management and advanced testing means, can ensure to produce high quality micro-powder to meet the requirements and user needs.

From the users’ requirements, geometric parameters that influence the usability of diamond micro-powder are: particle shape, particle size, and distribution and intensity of particle size. Particle size is the most important feature of all, and in order to correctly express the feature value and make both sides of supply and demand of the same size sample get consensus and unity, we need stipulate the measurement and representation of particle size in the standard or the supply contract. Using equivalent area circle diameter to replace the particle size is relatively common practice in powder engineering discipline, and is often used in practice of micro-powder particle size testing standards and production of superhard materials in the world.

For quality control of diamond micro-powder particle size, there are many instruments that can be used. Current biological microscope and projection microscope are means for quality control of particle size of workers in the micro-powder production workshop worker. Micron and submicron particle testing technology in our country has been mature. Most micro-powder production enterprises select the laser particle size analyzer to detect the particle size; The particle size of nanoscale products is checked by dynamic light scattering nanometer particle size analyzer, transmission electron microscopy (TEM) and scanning electron microscope (SEM) and other methods.