Precious metals are elements that are considered rare and chemically inert. They’re not abundant in nature, and therefore they have high economic value. Precious metals are used commonly in jewelry, industrial processes, or very often as investment vehicles. The four primaryprecious metalsare gold,...
Generally, alloys are stronger and harder than their main metals, less malleable (harder to work) and less ductile (harder to pull into wires).Chart: The same main metal can produce very different alloys when it's mixed with other elements. Here are four examples of copper alloys. Although...
Metals can be magnetic and non-magnetic. The magnetic ones will produce a field around them, usually described as “ferromagnetic.” These metals are not magnetic by themselves in their natural state. Still, they can be attracted to objects that produce magnetic fields. ...
Non-ferrous metals are alloys or metals that do not contain any appreciable amounts of iron. All pure metals are non-ferrous elements, except for iron (Fe), which is also called ferrite from the Latin ‘ferrum,’ meaning “iron.”
REMs and their alloys are used in multiple areas of the automotive industry namely catalysts, batteries, and drive motors. Image Credit: Molycorp As you can see, there is a diverse use of REMs in automotive components. Cerium is used to polish glass and mirrors while Neodymium modifies light ...
Why Are Metal Alloys Useful? When two or more pure metals are combined, it often leads to changes in the mechanical properties of the resulting metal. The most common changes include an increase in strength and hardness. For example, steel is an alloy of iron and carbon. The addition of ...
While most magnets are made from metals and metal alloys, scientists have devised ways to create magnets from composite materials, such as magnetic polymers. What Creates Magnetism Magnetism in metals is created by the uneven distribution of electrons in atoms of certain metal elements. The irregular...
than automobile engine. The turbine wheel in a turbojet (涡轮喷气发动机)must withstand temperatures as high as 1 600 degrees Fahrenheit, so aircraft designers had to turn to the research metallurgist(冶金学家)for the development of metals and alloys that would do the job in jet-propelled ...
Die-casting alloys are even more expensive since they must combine with some other premium metals for added sturdiness, such as nickel or magnesium. The best way to avoid spending too much on alloy wheels is to keep them under regular maintenance schedules. I also suggest checking their conditi...
There are also non-ferrous metals, which as you may have guessed, don’t contain iron. They consist of other metals without any significant amount of iron. All metals and alloys are considered non-ferrous if they are comprised of little or no iron. ...