ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The current-carrying wear characteristics of Ti3AlC2 sliding against low-carbon steel wereinvestigated. Tests were carried out using a block-on-disk type friction tester, with sliding speeds of20~60 m/s, normal pressures range in 0.4~ 0.8 MPa, and the current intensity of 0 A, 50 A and 100 A.The Ti3AlC2 showed good current-carrying wear properties. At the sliding speed of 20 m/s, the wearrate of the Ti3AlC2 (× 10-6 mm3/Nm) was varied in the range of (2.05 ~ 2.41), (2.64 ~ 2.39) and (6.26~ 3.62), under the current of 0 A, 50 A and 100 A, respectively. Both the surfaces of Ti3AlC2 and thesteel were covered by a frictional film, which was consisted of iron titanate (Fe2.25Ti0.75O4) andaluminum iron oxide (AlFeO3). The wear rate of Ti3AlC2 with current was composed of two parts: theinteraction of micro-arc ablation and mechanical friction, and the coupled action of thermal andmechanical effect. Which one will be the main mechanism depends on the material parameters ofTi3AlC2 and the mechanical parameters such as the normal pressure or the sliding speed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.563.pdf
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