Effects of tungsten on the microstructures and tribological properties of CrN-Wx% coatings

Y. L. Su, T. H. Liu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


CrN-Wx% coatings with different tungsten contents were deposited using unbalanced magnetron sputtering technology. The microstructures and mechanical properties of CrN-Wx% coatings have been characterized by SEM, X-ray diffraction (XRD), nanoindentation and adhesion techniques. The tribological properties of the coatings were investigated using an oscillating friction and wear tester under dry conditions. Indexable inserts with CrN-Wx% coatings were applied to turning AISI 1045 steel material by a lathe. Micron-drills with CrN-Wx% coatings were adopted in the ultra high speed (105 rpm) PCB through-hole drilling test. Experimental results indicate that the coating microstructure, mechanical properties and wear resistance vary according to the tungsten content. CrN-W6% coated tools showed the best wear resistance in 1045 steel turning and PCB through-hole drilling tests. The service life of CrN-W6% coated tool is three times greater than that of an uncoated tool in PCB through-hole drilling test.

Original languageEnglish
Pages (from-to)241-250
Number of pages10
JournalMaterials Science and Engineering A
Issue number1-2
Publication statusPublished - 2005 Mar 25

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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