Nano Archive

Thermal stability of nano-layered structure and hardness of TiAlN/Si3N4 nanoscale multilayered coating

Park, Jong-Keuk and Baik, Young-Joon (2009) Thermal stability of nano-layered structure and hardness of TiAlN/Si3N4 nanoscale multilayered coating. Materials Letters, 63 (20). 1674 - 1676.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

Thermal stability of the TiAlN/Si3N4 nanoscale multilayered coating that was reported to show excellent hardness and toughness, has been investigated in terms of the nano-layered structure and hardness. TiAlN/Si3N4 nanoscale multilayered coatings with various thickness of Si3N4 layer were prepared by alternating deposition of TiAlN and Si3N4. In contrast to other nanoscale multilayered coating system such as AlN/CrN in which the intensity of the low angle XRD peaks decreases with increasing annealing temperature by interdiffusion between adjacent layers, the low angle XRD peak intensity of the nanoscale multilayered TiAlN/Si3N4 coatings increased after heat-treatment in an N2 atmosphere up to 800 °C. Such a thermal stability of the nano-layered structure is believed to be due to spinodal type phase separation of TiAlN and Si3N4, which increased the hardness value of the TiAlN/Si3N4 coating at high temperatures.

Item Type:Article
Uncontrolled Keywords:TiAlN/Si3N4; Thermal stability; Multilayer structure; Coatings; Hardness
Subjects:Material Science > Nanostructured materials
ID Code:6575
Deposited By:SPI
Deposited On:10 Feb 2010 17:32
Last Modified:10 Feb 2010 17:32

Repository Staff Only: item control page