Study of Mechanical, Tribological and Thermal Stability Properties of TiAIN Coatings with Low Aluminum Content

Ti-Al-N coatings have been widely studied especially those with high aluminum content for different industrial applications because they have high wear resistance and good thermal stability. For the present work TiAIN thin films were prepared by the simultaneous laser ablation of Ti and Al targets i...

Full description

Saved in:
Bibliographic Details
Published in:材料科学与工程：中英文B版 2015, Vol.5 (7), p.331-339
Main Author: Enrique Camps Johans S. Restrepo Stephen Muhl Jose G. Quinones-Galvan
Format: Article
Language:Chinese
Subjects:
AlN薄膜
TiAlN涂层
X-射线衍射
摩擦学
显微拉曼光谱
机械
热稳定性
铝含量
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ti-Al-N coatings have been widely studied especially those with high aluminum content for different industrial applications because they have high wear resistance and good thermal stability. For the present work TiAIN thin films were prepared by the simultaneous laser ablation of Ti and Al targets in a reactive atmosphere containing nitrogen. The structural characterization of the deposits was carried out using X-ray diffraction and it was found that the films were highly oriented in the （111） direction of TiN. The maximum coating hardness was 43 GPa for an aluminum concentration close to 11 at.%, whilst the coatings commonly used in industry with an aluminum content of about 25 at.% or greater, have hardness values between 25 and 30 GPa. The thermal stability of the films was studied by micro-Raman spectroscopy in the temperature range from 500 to 900 ℃. This technique was used to detect the formation of the TiO2 phase. The results indicated that the inclusion of relatively low aluminum contents up to 15 at.
ISSN:2161-6221