Precious metals are widely used, precious metals in addition to jewelry, but also a large number of electronic products and special alloys.
Precious metal elements with excellent physical and chemical properties (such as high temperature oxidation resistance and corrosion resistance, electrical properties, excellent electrical conductivity, high temperature thermoelectric performance and stable temperature coefficient of resistance, etc.), high catalytic activity, strong coordination ability and so on, USES in industry, the application of "small, small, fine, broad", the characteristics of modern so called "industrial vitamin". Precious metals are closely related to the development of modern high and new technology.
1. Application of precious metals in biomedicine
The use of precious metals, especially platinum and its alloys, as microprobes to explore the nervous system and repair damaged parts has yielded remarkable results. For example, optic nerve and other nerve repair device, diaphragm nerve ear vortex nerve stimulation device, spinal cord stimulation device, children's spinal curvature plastic device. Cardiac pacemakers are also made of precious metals. Because these devices implanted into the human body part in addition to the need to be compatible with the human body, non-toxic, but also requires a good corrosion resistance, conductivity, creep resistance, etc. Commonly used are Pt, pt-ir, Au, au-pt, ag-pd and other metal or alloy materials. Precious metal isotopes and compounds can be used in the diagnosis and treatment of liver, lung, kidney, breast, brain and other diseases and tumors.
2. Precious metals in aerospace materials
The aviation, aerospace and Marine industries require materials with high temperature, corrosion resistance, high reliability, high precision and long service life. Such as rocket ignition alloy, aircraft engine ignition contacts, missiles, satellites, ships, aircraft and other control direction, attitude instrumentation materials (such as gyroscope of the conductive gossamer) accurate temperature measurement materials, strain materials.
