Abstract
Boriding of high-silicon stainless steel was performed by means of a fluidized bed method. The boride layer was analyzed using X-ray diffraction, GDS and EPMA. The high-temperature microhardness, dry friction, and wear resistance in air and corrosion resistance in 3% sodium chloride solution of borided high-silicon stainless steel were investigated. The obtained results are as follows:(1) The Knoop hardness of borided high silicon stainless steel was 2000 HK. The boride layer consisted of FeB and Fe2B.(2) The enrichment of Si, Ni, and Cu excluded from the borided compound was detected under the boride layer.(3) The high-temperature microhardness of high silicon stainless steel improved significantly with boriding.(4) The dry wear resistance of high silicon stainless steel with respect to SUJ2, SUS304, and Al2O3 in air improved with boriding, but the dry friction characteristic did not improved significantly.(5) The corrosion wear resistance of high silicon stainless steel with respect to against Al2O3 in 3% sodium chloride solution improved with boriding.
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