View Item 
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Mechanical and Aerospace Engineering (MAE)
      • MAE Student Reports (FYP/IA/PA/PI)
      • View Item
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Mechanical and Aerospace Engineering (MAE)
      • MAE Student Reports (FYP/IA/PA/PI)
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      Subject Lookup

      Browse

      All of DR-NTUCommunities & CollectionsTitlesAuthorsBy DateSubjectsThis CollectionTitlesAuthorsBy DateSubjects

      My Account

      Login

      Statistics

      Most Popular ItemsStatistics by Country/RegionMost Popular Authors

      About DR-NTU

      The influence of Ni concentration on the mechanical properties of Ni doped CrAlSiN coatings

      Thumbnail
      Mc064.pdf (3.129Mb)
      Author
      Chan, Kwan Yee.
      Date of Issue
      2013
      School
      School of Mechanical and Aerospace Engineering
      Abstract
      Thin film coatings are commonly used in various applications and its performance is of high importance. The mechanical properties such as hardness often evaluated to determine the lifetime of a material. CrAlSiN is hard material and it is the successor of various thin film coatings such as CrN and CrAlN. CrAlSiN thin film is a hard but brittle material. Previous studies have shown the toughening effect of Ni on the CrAlSiN thin films. However, the performance of CrAlSiNiN at elevated temperature is still unknown. The objective of this experiment is to investigate the mechanical properties of Ni doped CrAlSiN thin film at elevated temperatures. In this experiment, the Ni content of Ni doped CrAlSiN thin film is increased from 0 to 39.8 at.%. At each concentration of Ni, Ni doped CrAlSiN thin film will be annealed at 500oC, 800oC, 900oC and 1000oC. The microstructure of Ni doped CrAlSiN thin film is studied using FESEM and it showed that when Ni concentration is increased, the surface morphology become grainier. When annealing temperature of Ni doped CrAlSiN thin film is increased, the surface of the thin film becomes very rough. The mean hardness of Ni doped CrAlSiN thin film decreases from 39.1±0.8 GPa to 14.9±2.6 GPa when amount of Ni doped increased from 0 to 39.8 at.%. However, hardness of Ni doped CrAlSiN thin film increases when it is annealed at 500oC and 800oC. However, hardness of Ni doped CrAlSiN thin film decreased when annealed at 900oC and 1000oC. The reduction in hardness when annealed at high temperatures could be due to destruction of surface at high temperatures.
      Subject
      DRNTU::Engineering
      Type
      Final Year Project (FYP)
      Rights
      Nanyang Technological University
      Collections
      • MAE Student Reports (FYP/IA/PA/PI)

      Show full item record


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       

      DCSIMG