The main effect of cobalt on the skin is allergic or irritating dermatitis. Exposed skin appears erythema, accompanied by slight itching, which is common in hand, wrist, forearm and skin wrinkles, especially in summer. Most patients are new workers exposed to cobalt. Among the above skin diseases, positive skin test can prove allergic to cobalt.
Inhalation of cobalt acetate dust can cause symptoms of acute chemical gastritis, including nausea, vomiting, severe pain in the upper abdomen, followed by hematemesis and bloody stool.
Extended data:
Industrial use:
The physical and chemical properties of cobalt determine that it is an important raw material for producing heat-resistant alloys, cemented carbides, corrosion-resistant alloys, magnetic alloys and various cobalt salts. Cobalt-based alloy or cobalt-containing alloy steel is used as various high-load heat-resistant parts in blades, impellers, conduits, jet engines, rocket engines, missile parts, chemical equipment and important metal materials in the atomic energy industry.
As a binder in powder metallurgy, cobalt can ensure the toughness of cemented carbide. Magnetic alloy is an indispensable material in modern electronics and electromechanical industry, which is used to manufacture various components of acoustic, optical, electrical and magnetic equipment.
Baidu encyclopedia-cobalt