Title of article :
The use of nickel graphite composite coatings for the mitigation of gross slip fretting wear on Ti6Al4V interfaces
Author/Authors :
C.H. Hager Jr.، نويسنده , , J. Sanders، نويسنده , , S. Sharma، نويسنده , , A.A. Voevodin، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2009
Pages :
12
From page :
1470
To page :
1481
Abstract :
In metallic contacts, surface oxides, adhesion, and material transfer play a primary role in the initial stages of fretting wear degradation. Given this behavior, the focus of this study was to mitigate fretting wear within Ti6Al4V contacts at room temperature and 450 °C with the use of thermally sprayed nickel graphite composite coatings with 5–20% graphite. The results show that the embedded graphite particles reduced the friction of the nickel thermal sprayed coatings during both low and high temperature fretting wear experiments. Friction and wear mechanisms are discussed with correlations of contact chemistry, morphology, and mechanical performance. Wear on the mated Ti6Al4V surfaces was reduced by the formation of uniform transfer films that were identified as graphitic based at room temperature and NiO based at 450 °C.
Keywords :
Fretting wear , Ti6Al4V , Gross slip , nickel , Graphite , High temperature
Journal title :
Wear
Serial Year :
2009
Journal title :
Wear
Record number :
1091207
Link To Document :
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