1, gold as decorations and utensils

Making jewelry is the earliest use of gold. Pure gold jewelry is small in size, high in value, easy to carry and has the functions of preservation and decoration. This is an ideal gift and giveaway, which has always been loved by people.

2. Electronic industry

Gold has the best machinability and can be drawn into filaments with a diameter of several microns. In addition, gold and its alloys are widely used as electrical contact materials, resistance materials, welding materials, temperature measuring materials and thick film pastes because of their good electrical conductivity, oxidation resistance and corrosion resistance.

3. Aviation and aerospace industry

Because of its high temperature resistance and corrosion resistance, gold is also widely used in the aerospace field, such as a kind of gold-plated glass, which is used to prevent ultraviolet rays in aerospace (now used in buildings, it can play a good role in preventing solar radiation and heat insulation).

4. Medicine

Gold is widely used in medicine. Tongrentang's famous Chinese patent medicines, such as Niuhuang Angong Pill, Niuhuang Qingxin Pill, Niuhuang Jiangya Pill and Dahuoluo Pill, are all prepared or wrapped in gold foil.

Step 5: Eat

In recent years, edible gold foil is popular in Japan and Southeast Asia, and gold foil dinner, gold foil wine, gold foil water, gold foil candy and gold foil cake have come out one after another.

6. Architectural decoration

Gold can be used for the decoration of buildings, which plays the role of finishing touch.

7. Chemical industry

In chemical industry, pure gold with inert surface is dispersed on carrier materials, which is active for some chemical reactions and can be used as chemical catalyst.

8, glass gold plating and other manufacturing industries

In recent years, the technology of glass gold plating is becoming more and more mature. Plating a gold film with a thickness of only about 0. 1.3 micron on the glass can effectively reflect infrared rays, and it is also a heat insulation medium, without affecting the transparency of the glass at all.

9, scientific research and new materials

With the progress of technology, the application prospect of gold is broader. In scientific research, gold can be used to capture slow neutrons, and its radioisotope can be used to study the diffusion process in metals and alloys, as well as the role of chemical and physical adsorption and determine the solubility of various compounds. Gold tracer atoms can also be used to identify the authenticity of antiques without damage.