Editorial Feature

Nickel-Titanium, Nitinol (NiTi) Nanoparticles - Properties, Applications

Nanoparticles are used and evaluated for use in several fields. The properties of many traditional materials change when formed from nanoparticles. This is because nanoparticles have a greater surface area per weight than bulk particles, thereby causing them to be more reactive to some other molecules.

This article discusses the properties and applications of nickel titanium nanoparticles. Nickel and titanium belong to Block D, Period 4 element. A major portion of mined nickel comes from laterite and magmatic sulfide ores. Titanium is found in igneous rocks and sediments derived from them.

Nickel titanium nanoparticles have to be stored in a cool dry room after being sealed in vacuum as damp reunion will affect its dispersion performance and using effects.

Chemical Properties

The chemical properties of nickel titanium nanoparticles are outlined in the following table.

Chemical Data
Chemical symbol NiTi
CAS No. -
Group Nickel 4
Titanium 4
Electronic configuration Nickel [Ar]3d8 4s2
Titanium [Ar] 3d2 4s2
Chemical Composition (typical)
Element Content (%)
Nickel 45%
Titanium 55%

Physical Properties

The physical properties of nickel titanium nanoparticles are given in the following table.

Properties Metric Imperial
Density 6.45 g/cm3 0.233 lb/in3

Thermal Properties

The thermal properties of nickel titanium nanoparticles are provided in the table below.

Properties Metric Imperial
Melting point 1310°C 2390°F


The key applications of nickel titanium nanoparticles are as follows:

  • Many catalytic functions such as in the anode of solid oxide fuel cells or in the conductive electrolytic layer of proton exchange membrane (PEM) fuel cells
  • The replacement of platinum with nickel titanium nanoparticles in automotive catalytic converters would significantly reduce their cost
  • In coatings, plastics, nanowires, nanofibers, and textiles
  • In specific alloy and catalyst applications.
  • As a temperature control system

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