What are the types and uses of metals? - Engineering Guide

What are the types and uses of metals?

 

types and uses of metals


Introduction

When we talk about the types of metals and their uses, it’s like opening a treasure box of versatile elements that have shaped human civilization. From electronics to architecture, metals have played an indispensable role in propelling progress. This article takes a comprehensive look into various metals and their unique roles in modern life.

Metals We Use Daily

Aluminum (Al)Ubiquitous in our kitchens as a foil.

  • An essential component in aircraft, providing strength without adding significant weight.
  • A primary material in drink cans, providing a corrosion-resistant barrier.

Example: Think of the last time you wrapped your sandwich in aluminum foil; this metal keeps it fresh.

Iron (Fe)Integral in construction projects as part of steel.

  • Present in everyday vehicles, giving them strength and durability.
  • Utilized tools and machinery for its robust nature.

Example: The Eiffel Tower, an iconic symbol of Paris, is made of iron.

Copper (Cu)Commonly used in electrical wiring, transmitting electricity efficiently.

  • Plays a role in plumbing systems due to its resistance to water corrosion.
  • Important in coinage in several countries.

Example: Did you know? Copper naturally oxidizes over time, giving the Statue of Liberty her greenish color.

Precious Metals with a Golden Touch

Gold (Au)Highly desired for jewelry due to its beauty and non-tarnishing properties.

  • Used in electronics for its excellent conductivity.
  • A traditional form of wealth and investment.

Example: Wedding rings often feature gold, symbolizing a bond that lasts forever.

Silver (Ag)Popular in decorative items and jewelry.

  • Used in electronics and photography because of its conductive and light-sensitive properties.
  • Historically, used as currency.

Example: Silverware isn't just a term; silver's antibacterial properties make it a popular choice for
utensils.


Metals Pushing Technological Frontiers

Titanium (Ti)Strong and lightweight, it's the metal of choice in aircraft and spacecraft.

  • Biocompatible, making it perfect for medical implants.
  • Resistant to corrosion, it's sought after in marine applications.

Example: Many sports enthusiasts might be familiar with titanium golf clubs, known for their lightweight strength.


Lithium (Li)Central in rechargeable batteries, especially for electric cars and smartphones.

  • Used in glass-making and ceramics.
  • Essential in specific pharmaceuticals for treating bipolar disorder.

Example: The device you might be reading this on probably has a lithium battery.

Vanadium (V)Central to developing vanadium redox flow batteries, which are large-scale energy storage units.

  • Strengthens steel and is used in tools, surgical instruments, and aircraft.
  • Applied in specific chemical processes as a catalyst.

Example: The growing need for green energy solutions makes vanadium crucial, especially in grid storage applications.

Mercury (Hg)Found in thermometers and barometers.

  • Integral in fluorescent lamps.
  • Utilized in dental amalgams for fillings.

Example: Ever wondered how a thermometer displays temperature? Mercury's expansion and contraction with temperature variations make this possible.


The Unsung Heroes in the Metal World

Zinc (Zn)Essential for galvanizing, a process that prevents rusting.

  • A component in dietary supplements for their health benefits.
  • Used in the creation of certain paints.

Example: The highway guardrails, coated with zinc, resist rusting despite rain and snow, protecting drivers from hazards.

Nickel (Ni)Found in stainless steel, making our kitchenware rust-resistant.

  • Essential in rechargeable batteries.
  • Used in the creation of magnets.

Example: Many guitar strings have nickel, giving the music its distinct resonance.

Metals in Medicine and Healthcare

Platinum (Pt)Used in pacemakers due to its biocompatibility.

  • Integral in chemotherapy drugs for certain cancers.
  • Functions as a catalyst in scientific research.

Example: Cancer patients undergoing specific treatments might benefit from platinum-based drugs' unique properties.

Cobalt (Co) Often found in medical tools and prosthetics.

  • Utilized in radioactive forms for cancer treatments.
  • Essential in producing high-performance alloys.

Example: Many hip replacements use cobalt alloys, ensuring longevity and reliability for patients.

Iridium (Ir)Applied in radiation therapy for cancer treatment.

  • Used in making crucibles and other equipment that require high-temperature resistance.
  • Has potential applications in LED technology.

Example: Some cancer patients undergoing specific targeted treatments may benefit from iridium-based therapy techniques.

Architectural Marvels and Metals

Steel (Alloy of Iron and Carbon)A backbone in modern skyscrapers due to its strength.

  • Integral in bridges and infrastructural projects.
  • Used in everyday household items, from cutlery to furniture.

Example: The Brooklyn Bridge in New York stands tall and sturdy, thanks mainly to steel.

Lead (Pb)Historically used in plumbing systems (though now being replaced due to health concerns

  • Integral in radiation shielding, especially in medical settings.
  • Used in batteries and certain types of glass.

Example: Stained-glass windows, often seen in historic churches, frequently employ lead in their designs.

Metals Fueling Renewable Energy

Gallium (Ga)Crucial in the production of solar panels.

  • Utilized in electronics, especially in semiconductors.
  • Used in LED technology.

Example: The increasing adoption of solar panels in homes and industries is partly thanks to gallium's unique properties.

Indium (In)A vital component in touch screens, LCDs, and solar cells.

  • Used as a solder in electronics due to its low melting point.
  • Essential in certain types of LEDs.

Example: Every time we swipe our smartphones, indium-tin oxide layers make touch sensitivity possible.

Metals in Transportation and Aerospace

Magnesium (Mg)It is desired in the automotive and aerospace sectors because of its low weight.

  • Used in producing fireworks due to its bright and intense white flames.
  • Plays a role in medical applications, such as bone implants.

Example: Modern cars, striving for fuel efficiency, often incorporate magnesium alloys to reduce weight.

Chromium (Cr)Best known for its shiny finish, it's used extensively for car and motorcycle parts.

  • Vital in stainless steel production, giving steel its anti-corrosive properties.
  • Utilized in leather tanning and wood preservation.

Example: The dazzling, shiny bumpers on classic cars owe their gleam to chromium.

Metals and the Environment

Cadmium (Cd)

Found in rechargeable batteries, especially nickel-cadmium ones. Used in pigments, especially in artist paints.
Essential in some types of solar cells.

Example: Artists aiming for bright yellows in their masterpieces might use cadmium paints.

Molybdenum (Mo)

Helps plants fix nitrogen, making it essential in agriculture. Used to strengthen and harden steel. Plays a role in specific chemical reactions, acting as a catalyst.
Example: Some of the freshest greens in our salads are flourishing because of molybdenum in the soil.

Metals in Electronics and Communications

Silicon (Si)Fundamental for semiconductor devices like microchips.

  • Used in solar cells to convert solar energy into electricity.
  • Found in certain types of ceramics and glasses.

Example: Our computers and phones operate efficiently because of silicon-based microchips. To delve deeper into its essential role in tech, Semiconductor Industry Association offers an ocean of knowledge.

Tellurium (Te)Integral in the production of fiber optic cables.

  • Used in the manufacturing of certain types of solar panels.
  • Plays a role in creating rewritable optical discs (CDs, DVDs).

Example: The high-speed internet connection we often take for granted might rely on fiber optic cables, in which tellurium plays a crucial role.

Marine Applications Of Metals

Bronze (Alloy of Copper and Tin)Popular for ship propellers due to their resistance to saltwater corrosion.

  • Historically used for weapons, armor, and tools.
  • Recognized in the arts for statues and bells.

Example: The famous' Liberty Bell' in Philadelphia is bronze. To this day, many marine vessels sail smoothly because of bronze propellers, which resist corrosion in salty sea waters.

Culinary Uses of Metals

Tin (Sn)Used to coat other metals, preventing corrosion, especially in cans.

  • Utilized in the production of certain kitchen utensils.
  • Essential in the creation of specific types of soldiers

Example: The "tin" cans we use for preserving food have an inner lining of tin, ensuring our foods stay fresh.


Metals in Fashion and Jewelry

Rhodium (Rh)Often used to plate jewelry, giving a shiny, tarnish-resistant finish.

  • Essential in catalytic converters, reducing harmful emissions from vehicles.
  • Utilized in electrical connections and thermocouples.

Example: Those sparkling white gold rings in jewelry stores often owe their shine to rhodium plating. 

Metals in Defense and Space Exploration

Beryllium (Be)Essential for aerospace applications due to its lightness and stiffness.

  • Used in nuclear reactors as a moderator.
  • Found in specific instruments and devices due to its X-ray transparency.

Example: The James Webb Space Telescope, the successor to Hubble, contains beryllium mirrors. Consider visiting the NASA Materials Science Division for an in-depth exploration of metals in space applications.

Metals in Art and Sculpture

Brass (Alloy of Copper and Zinc)Widely used in musical instruments like trumpets, trombones, and tubas due to its acoustic properties

  • Employed in decorative fixtures, such as door knobs and lamps.
  • Featured prominently in various art sculptures and medallions.

Example: Ever admired the grandeur of a brass statue or enjoyed the rich sound of a brass band? This alloy is at the heart of many artistic creations.

Conclusion

Throughout our journey into the vast realm of metals, it's undeniable how deeply they are ingrained in the very essence of our civilization. They play an essential part in everything from the moving art that raises our emotions to the cutting-edge technology that powers our digital age. Their flexibility and determination are unmatched.

These elements, whether prominently in our view or operating behind the scenes, are the unsung heroes of our daily lives. They are symbols of human innovation, illuminating our past and present and promising an enriched future. As we move forward, our symbiotic relationship with metals evolves, highlighting their pivotal role in shaping our world and driving the limitless possibilities of tomorrow.