Characteristics and uses of carbonyl iron powder

1. Traditional powder metallurgy and injection molding: High specific gravity alloys in traditional powder metallurgy require the use of more active iron powder as the liquid phase in sintering to form a more continuous bonding phase and inhibit the generation of brittle phases, so as to obtain high-density or fully dense high-performance products. It is mainly used in military projects to replace the banned depleted uranium material to produce armor-piercing bullet cores. The injection molding process has high requirements for maximum powder filling. Therefore the bulk density, which is the standard for measuring powders, is very high. However, the smaller the particle size of the powder, the more likely it is that arching occurs and the lower the bulk density. In this case it is very important that the particles do not stick together. It was not until BASF in Germany developed proprietary grades that injection molding was really used industrially.

2. Iron powder core: because of the small particle size (10um or less), large activity, irregular shape (onion head layer structure), carbonyl iron powder has a high flux rate at high frequency and ultra-high frequency, is also widely used in the manufacture of magnetic materials, in the production of high-frequency iron powder core has an irreplaceable role. The U.S. Micrometals is the standard setter in this field, and many of the company's products are manufactured based on carbonyl iron powder supplied by Germany's BASF.

3. Diamond tools: Traditional high-performance diamond tools use costly cobalt powder as the matrix. Recent research and production has shown that considerable performance can be achieved by using carbonyl iron powder to reduce the amount of Co powder. In addition, for traditional iron-based diamond tools, the use of carbonyl iron powder can improve the holding power of the matrix on the diamond and improve the wear resistance of the matrix.

4. Diamond catalyst: the catalyst of synthetic diamond, there is no market in China.

5. Nutritional iron supplement: Carbonyl iron powder from ISP has been officially recognized by the U.S. Drug Enforcement Administration, and can be added directly to food as iron supplement. Current data show that carbonyl iron powder is absorbed by the human body more than 80%, far more than the current use of compound iron supplements. At the same time, the use of carbonyl iron powder does not cause toxicity from excessive iron intake. There is no information that the government has allowed the use of carbonyl iron powder as a nutritional iron supplement.

6. Microwave absorption materials: carbonyl iron powder in the field of national defense applications. According to the data show that after the 90's on the carbonyl iron powder wave absorbing materials research is very rapid.