Today when we think of silver and gold we often associate it with shiny jewelry, wealth and status. But these metals go far beyond their aesthetic appeal and play an important role in our everyday lives. In Fact and come to think of it, industrial applications drive a significant portion of the demand for both metals especially silver, shaping the world in ways we don't even realize. In my last post, I talked about the weighting of both silver and gold when making investments opportunities but today, we will be taking an overview of the industrial use of gold and silver which I strongly believe many of us are not aware of certainly.
Industrial Use Of Silver
Silver is in high demand globally for industrial use due to its useful properties. About half of the world's silver supply goes into industrial applications like medicine, electronics, and jewelry. Silver's widespread industrial use makes it one of the most traded metals worldwide. Only 25% of silver is obtained through direct mining. The other 75% is generated as a byproduct of mining other metals like copper, zinc, lead, and gold. So while some silver comes from dedicated silver mines, most are produced incidentally during the processing of other metals. This combination of direct mining and byproduct generation meets the substantial global demand for silver across many sectors.
The number one use of silver in the industry is in electronics. Silver's unsurpassed thermal and electrical conductivity among metals means it cannot easily be replaced by less expensive materials. For example, small quantities of silver are used as contacts in electrical switches: join the contacts, and the switch is on; separate them and the switch is off. Whether turning on a bedroom light using a conventional switch or turning on a microwave using a membrane switch, the result is the same: the current can pass through only when the contacts are joined. Automobiles are full of contacts that control electronic features, and so are consumer appliances. Industrial strength switches use silver, too.
Silver paste printed onto solar photovoltaic cells acts as electrical contacts that capture and transport current generated when sunlight strikes the cells' semiconducting layer. Solar panels are one of the fastest increasing uses for silver, owing to this role. Silver's high reflectivity also allows it to reflect sunlight into solar collectors containing salts, which convert the sunlight into electricity. Nuclear energy utilizes silver as well. Silver control rods are inserted into nuclear reactors to absorb neutrons, thereby slowing the rate of fission. Inserting the silver control rods into the reactor core reduces the nuclear reaction rate, while removing them increases the rate. So silver paste contacts enable solar panels to produce electrical current from sunlight, while silver reflectors focus sunlight onto solar collectors. Additionally, silver control rods regulate the fission rate in nuclear reactors by absorbing neutrons.
Silver has strong antibacterial properties while being relatively non-toxic to human cells. This is because silver ions released in water can penetrate and disrupt the cell walls and metabolism of bacteria, which are thinner than animal cell walls. However, animal cells are unaffected by the silver ions. The antibacterial properties of silver have been known and utilized for hundreds of years. Silver's ability to kill germs and stop their growth makes it useful in medical applications while being safe for humans.
The Industrial Use Of Gold
Gold is the most useful mineral extracted from the Earth due to its many unique characteristics. The utility of gold comes from its wide range of special properties. Gold is an eternal conductor because it has many useful properties. It can conduct electricity and withstand corrosion. Gold is extremely malleable, allowing it to be drawn into wire or pounded into thin sheets. It can combine with other metals to form alloys. Gold can be melted and poured into finely detailed molds. It has a beautiful golden color and a bright, shiny metallic look.
Gold is an integral component in many parts of standard computers due to its superior conductivity. The quick and accurate transmission of digital data within a computer and between components necessitates a reliable conducting material. Gold outperforms other metals in meeting these conductivity needs, justifying its higher cost. Gold-plated edge connectors that mount microprocessors and memory chips onto motherboards enable smooth data flow. Gold alloy connectors used in plugs and sockets for attaching cables also facilitate unimpeded data transfer. To enhance durability, the gold is typically electroplated onto other metals and alloyed with small quantities of nickel or cobalt. Though expensive, gold is vital for the flawless operation of computers.
Gold is an essential material for spacecraft because of its extreme reliability, which is critical when any repairs or maintenance after launch are impossible. NASA uses gold extensively in space vehicles to justify the high costs. Gold is utilized in circuitry as a dependable conductor and connector. Many parts of spacecraft are also coated with gold-plated polyester film to reflect infrared radiation and regulate interior temperatures. Without this coating, dark-colored components would absorb substantial heat. Additionally, gold serves as a lubricant between moving mechanical parts in space's vacuum where organic lubricants would evaporate or break down due to intense radiation. A thin layer of gold enables the gold molecules to slide past each other under frictional forces, providing a lubricating effect. Gold's low shear strength makes it well-suited as a lubricant in space's harsh conditions. Thus, gold plays several indispensable roles in enabling space vehicles to function reliably on long voyages where systems must operate unattended.
What's in store for Silver and Gold for the future?
The industrial applications of silver and gold are often complementary. For instance, gold-plated silver contacts are more durable and efficient in electronics than silver alone. As technology progresses and environmental awareness increases, silver and gold will likely find more industrial uses. With their unique properties, these precious metals will continue driving innovation and shaping the future across sectors like cutting-edge batteries and advanced medical therapies. The synergistic qualities of silver and gold ensure their industrial importance will grow, not diminish, with time. Their roles will expand in the solutions underpinning next-generation technologies and sustainability efforts.