<span style="font-size:11.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">Investigation of surface properties and wear resistance of borided steels with different B₄C mixtures</span>

Abstract

<span style="mso-ansi-language:EN-US" lang="EN-US">Boriding is a thermo-chemical surface hardening treatment applied to iron based materials. This treatment is performed by boron element diffusing into iron based materials<span style="mso-ansi-language:EN-US" lang="EN-US"> at high temperatures. Wear resistance increases by forming ferro-boron phases on the material surface. In addition, a very hard layer forms on the material surface. As a result, the tribological properties of the material increase. In this study, 6 different mixtures are prepared with B₄C and SiC powders. In these mixtures steels of AISI 1020 and AISI 1040 are borided with a stainless steel crucible at a temperature of 900°C for 3 h. <span style="mso-fareast-font-family:AdvGulliv-R; mso-ansi-language:EN-US" lang="EN-US">Depending on the boriding mixtures, the thickness of the borides formed on the surface of borided AISI 1020 and AISI 1040 steels ranged from 14 to 71 μm and from 10 to 64 μm,<span style="mso-ansi-language:EN-US" lang="EN-US"> respectively. It is observed that the layer thickness increases with increase in B₄C% ratio. The wear rate of steels increased with decreasing SiC ratio. The average value of obtained microhardness for borides<span style="mso-ansi-language:EN-US" lang="EN-US"> of AISI 1020 and AISI 1040 steels are 1776 and 1860 HV_0.05, respectively.<b style="mso-bidi-font-weight: normal"> </b><span style="mso-ansi-language: EN-US" lang="EN-US">

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