Title of article :
SURFACE HARDENING OF TUNGSTEN-BASED HEAVY ALLOY VIA PACKBORONIZING
Author/Authors :
Ataei, A. R School of Metallurgy and Materials Engineering - Iran University of Science and Tehcnology, Tehran , Jalaly, M Nanotechnology Department - Scbool of New Technologies - Iran University of Science & Technology, Tehran , Tamizifar, M School of Metallurgy and Materials Engineering - Iran University of Science and Tehcnology, Tehran
Abstract :
The boronizing of a tungsten heavy alloy containing Ni and Fe as the major alloying elements were peiformed in the present study to increase its surface hardening. Pack cementation method was employed as a well known, successfUl solid-state process for boronizing. The coating treatment was accomplished at different temperatures of 1000, 1050 and 11OO"C for 6 and 9 hours. Theformation of tungsten boride phose wos confirmed. although a silicide layer covered the surface of the specimen as the outer layer. The mechanism of the formation of a multilayered surface was explained. The maximum thickness of reaction zone and surface hardness achieved in the current work were 300 pm and 2470 HY. respectively.
Keywords :
Tungsten alloy , Hardening , Boronizing , Pack cementation
Journal title :
Astroparticle Physics
