کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
615328 | 881441 | 2011 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Investigation into the wear behaviour of Stellite 6 during rotation as an unlubricated bearing at 600 °C Investigation into the wear behaviour of Stellite 6 during rotation as an unlubricated bearing at 600 °C](/preview/png/615328.png)
The wear behaviour of Stellite 6 was studied during rotational sliding in a bespoke bearing rig at 600 °C for times between 2 min and 12 h. Six stages of wear were identified: (i) formation of a mixed oxide ‘glaze’, (ii) cobalt and chromium elemental diffusion to the ‘glaze’ surface forming chromium- and cobalt-dominated oxide layers, (iii) oxygen diffusion into the ‘glaze’ leading to a chromium-dominated oxide layer at the ‘glaze’/substrate interface, (iv) spallation of the ‘glaze’ through chemical failure, (v) re-formation of the ‘glaze’ and (vi) elemental diffusion within the ‘glaze’, again resulting in discrete oxide layer formation.
► The wear properties of Stellite 6 were investigated in a bespoke bearing rig at 600 °C.
► Wear protective oxide films often referred to as ‘glazes’ were formed.
► During the formation of the ‘glazes’ discrete oxide films were formed within them.
► Eventually spallation of the ‘glaze’ occurred through chemical failure.
► A new ‘glaze’ was regenerated from the wear debris.
Journal: Tribology International - Volume 44, Issue 12, November 2011, Pages 1589–1597