How can diamond powder be preserved for a longer period?

Diamond powder, as an outstanding ultra-hard material, is widely used in various industrial fields. However, if not stored properly, it may undergo agglomeration, oxidation, and performance degradation, which can affect its subsequent usage. Mastering the correct storage method can enable diamond powder to maintain excellent performance for a long time. Here, we will introduce it to you in detail. 

Sealing and moisture-proofing are fundamental

Diamond powder has a strong hygroscopic property. In a humid environment, the surface of the powder will absorb moisture, which can lead to agglomeration. After agglomeration, the powder particles become larger and their dispersibility decreases. During subsequent processing and use, it is difficult to evenly distribute on the processing surface, resulting in a decrease in processing accuracy and even the possibility of blocking equipment pipelines. Therefore, when storing diamond powder, it is essential to use containers with good sealing performance, such as glass jars with sealing rings or plastic buckets. After loading the powder into the container, make sure the lid is tightened to prevent moisture from entering the air. If stored in a humid environment, you can also place an appropriate amount of desiccants, such as silica gel or calcium chloride, inside the container to further absorb any remaining moisture and maintain a dry environment inside the container. 

Avoiding light and low temperature is crucial

Exposure to light and high temperature will accelerate the oxidation reaction of diamond powder. If the powder is exposed to the sun for a long time, the carbon atoms in the powder may react with oxygen in the air to form substances such as carbon dioxide, resulting in a decrease in the quality of the powder and changes in its performance. At the same time, a high-temperature environment will intensify the movement of the powder particles, increasing the possibility of agglomeration. Therefore, diamond powder should be stored in a cool and dark place to avoid direct sunlight. If possible, the storage container can be placed in a low-temperature environment, such as the refrigerator's chilled compartment (with a temperature of about 4℃ being more suitable), but be careful to avoid the container freezing and cracking. 

Remember to stay away from pollution sources

The particles of diamond powder are extremely fine and have strong adsorption properties. They are prone to adsorb impurities and pollutants around them. Once these impurities are mixed into the powder, they will change its chemical composition and physical properties, affecting the quality and effect of subsequent processing. Therefore, when storing diamond powder, it should be kept away from dust, oil stains, chemical substances and other pollution sources. The storage room should be kept clean and cleaned and ventilated regularly. At the same time, when taking out the powder, the operator should wear clean gloves to avoid contamination from sweat, oil and other substances on their hands. 

Categorization for better organization

Diamond powders of different particle sizes and for different purposes may have different performance and storage requirements. To facilitate management and use and avoid confusion, different specifications of the powders should be stored separately. Labels can be attached to the containers, indicating the particle size, batch number, production date, etc., so that the required powder can be quickly and accurately located when needed. 

As long as the above-mentioned measures are properly implemented, such as ensuring proper sealing and moisture-proofing, avoiding exposure to light and low temperatures, keeping away from pollution sources, and storing them in separate categories, the preservation time of diamond powder can be effectively prolonged, ensuring that it can perform at its best when needed.