October 31, 2023

Nanomaterials have the structural features in between of those of atoms or molecules and the bulk materials. The properties of nanomaterials change as their size approaches the nanoscale. Thermal properties : Nanomaterials have lower melting temperatures, when the particle size decreases below 100 nm. It is due to the fact that the surface energy level increases as

The term nano originated from the Greek nanos which means “dwarf”. It is one billionth of a meter. Therefore, whenever we think about nonoscience or nanomaterials very small objects come to the mind. A nanometre or nm is one thousand millionth of a metre, (ie), 1 nm=10−9 m=10−3 m=10 A. All materials are composed of grains, which in

Ni-Ti alloy was developed in 1962 by Naval Ordnance Laboratory, White Oak, Maryland, USA and is commercialized under the name nitinol (nickel-titanium Naval Ordance Laboratory). Ni-Ti alloy shows shape memory effect when temperature or stress is applied. The Ni-Ti has proven to be the most flexible and beneficial in engineering applications. The Ni-Ti alloy have

Shape memory effect It is the phenomenon in which the shape memory alloy apparently deforms at lower temperature and returns to its original shape (former shape) when heated at higher temperature. Let us consider a shape memory alloy for which the temperature is decreased. Due to decrease in temperature, phase transformation takes place from austenite