Question

nickle and iron are two main elements synonymous to

Answer 1

Answer:

An iron–nickel alloy or nickel–iron alloy, abbreviated FeNi or NiFe, is a group of alloys consisting primarily of the elements nickel (Ni) and iron (Fe). It is the main constituent of the "iron" planetary cores and iron meteorites.

Explanation:

Answer 2

Answer:

alloy and batteries

Explanation:

Iron is used to make alloy steels like carbon steels with additives such as nickel, chromium, vanadium, tungsten, and manganese.

Nickel is silvery-white. hard, malleable, and ductile metal. It is of the iron group and it takes on a high polish. It is a good conductor of heat and electricity.

Invar as an alloy:

• Invar is an Iron(Fe) and Nickel (Ni) alloy that expands very little when heated.

• It includes 64% iron and 36% nickel.

Ni -Fe battery:

• Nickel-Iron (Ni-Fe) batteries, also known as Nickel-Alkaline or Edison batteries are rechargeable batteries with a long life expectancy, high Depth of Discharge (DoD) and a reputation for durability.

• The battery can withstand overcharge, overdischarge and short-circuiting and yet last 20 years or more.

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