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:
Borides, especially transition metal borides, like Mo2FeB2 ternary boride, are promisingcandidates for wear resistance applications. However, poor sinterability and extreme brittlenessraise difficulties to manufacture a structural material. In this work, the viability to obtain Fe-Mo-Balloys with high wear resistance materials obtained by PM techniques is studied.Other researchers use Cr and Ni alloyed steels and the B amount addition is very low. The mainobjectives are to increase the amount of B, not to use Cr alloyed steels and to decrease the sinteringtemperature. This can be obtained using mechanically alloyed Fe/B (50% by wt.) powders, whichare highly reactive after milling for 36 h.The mixture has a composition of 40%Mo-40%Fe-20%Fe/B, being characterized by flow rate andapparent density. These materials were uniaxially compacted and vacuum sintered. Specimens wereanalysed by SEM and physical and mechanical properties were evaluated (density, dimensionalchange, bending strength, hardness and wear)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.265.pdf
