Bias effects on microstructure, mechanical properties and corrosion resistance of arc-evaporated CrTiAlN nanocomposite films on AISI 304 stainless steel

Cheng Hsun Hsu, Chun Ying Lee, Zhao Hong Lin, Wei Yu Ho, Chung Kwei Lin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

CrTiAlN films were deposited on AISI 304 stainless steel by cathodic arc evaporation under a systematic variation of the substrate bias voltage. The effects of substrate bias on the coating morphology and mechanical properties, such as structure, composition, adhesion, hardness and Young's modulus, were studied in details using field emission scanning electron microscopy, X-ray diffraction, electron probe microanalysis and indenter. Polarization test and immersion test were also carried out to evaluate the corrosion behavior of the various films. CrTiAlN films are nanocrystalline that exhibit a CrN/TiAlN multi-layered morphology. At the optimal value of substrate bias voltage (i.e., - 150 V), the CrTiAlN film showed an increased Cr content and improved properties, such as higher adhesion, higher hardness (38 ± 2 GPa), and greater Young's modulus (319 ± 16 GPa) vs. the films deposited at other substrate bias voltages. Moreover, the optimum film has better corrosion resistance in 3.5 wt.% NaCl and 20 vol.% HCl solutions.

Original languageEnglish
Pages (from-to)4928-4932
Number of pages5
JournalThin Solid Films
Volume519
Issue number15
DOIs
Publication statusPublished - May 31 2011
Externally publishedYes

Fingerprint

Nanocomposite films
Stainless Steel
corrosion resistance
Corrosion resistance
stainless steels
nanocomposites
Stainless steel
arcs
mechanical properties
Mechanical properties
microstructure
Microstructure
Bias voltage
Substrates
modulus of elasticity
electric potential
adhesion
Adhesion
hardness
Elastic moduli

Keywords

  • Adhesion
  • Bias voltage
  • Corrosion resistance
  • CrTiAlN
  • Mechanical properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Bias effects on microstructure, mechanical properties and corrosion resistance of arc-evaporated CrTiAlN nanocomposite films on AISI 304 stainless steel. / Hsu, Cheng Hsun; Lee, Chun Ying; Lin, Zhao Hong; Ho, Wei Yu; Lin, Chung Kwei.

In: Thin Solid Films, Vol. 519, No. 15, 31.05.2011, p. 4928-4932.

Research output: Contribution to journalArticle

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