Fretting Fatigue Behavior of Titanium Alloy Coated with Functionally Graded Ti/TiN Film

Masanori Nakatani; Shota Shimizu; Yasunori Harada; Hitoshi Uchida

doi:10.4028/www.scientific.net/AMR.891-892.897

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Fretting Fatigue Behavior of Titanium Alloy Coated...

Fretting Fatigue Behavior of Titanium Alloy Coated with Functionally Graded Ti/TiN Film

Abstract:

The influence of functionally graded TiN coating on fretting fatigue behavior of titanium alloy was investigated. The coating was deposited using an ion beam assisted deposition technique. TiN film was fabricated by an electron beam evaporation of titanium and simultaneous nitrogen ion bombardment. An acceleration voltage of ion beam was set at 0.2 or 2.0 keV. The functionally graded layer was fabricated by varying the mixing ratio of nitrogen/argon ion beam. The mixed layer became thicker by an increase in acceleration voltage. The adhesive strength and wear resistance were improved with an increase in the acceleration voltage. Moreover, they were significantly improved by inserting the functionally graded layer. The fretting fatigue tests were conducted using a four-point bending fatigue testing machine. The fretting fatigue life of specimen coated with monolayer TiN film was longer than that of uncoated specimen. The TiN coating with functionally graded layer was the most effective to improve the fretting fatigue life.

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Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

897-902

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.897

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Online since:

March 2014

Authors:

Masanori Nakatani*, Shota Shimizu, Yasunori Harada, Hitoshi Uchida

Keywords:

Fretting Fatigue, Functionally Graded Layer, Ion Beam Assisted Deposition, Titanium Alloy, Titanium Nitride

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