EFFECT OF POST-OXIDATION ON CORROSION RESISTANCE OF NITROCARBURIZED AISI 5115 STEEL

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ESFAHANI ALIREZA; HEYDARZADEH SOHI MAHMOUD; RASSIZADEHGHANI JAFAR; MAHBOUBI FARZAD

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Seminar Paper

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Seminar: NATIONAL VACUUM CONFERENCE IRAN
Year:2008 | Issue:3

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Title

EFFECT OF POST-OXIDATION ON CORROSION RESISTANCE OF NITROCARBURIZED AISI 5115 STEEL

Author(s)

ESFAHANI ALIREZA | HEYDARZADEH SOHI MAHMOUD | RASSIZADEHGHANI JAFAR | MAHBOUBI FARZAD

Keywords

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Abstract

IN THIS INVESTIGATION EFFECT OF POST-OXIDATION TEMPERATURE ON CORROSION RESISTANCE OF NITRO CARBURIZED AISI 5115 STEEL WAS STUDIED. FOR THIS PURPOSE, QUENCHED AND TEMPERED STEEL WAS PULSE PLASMA NITRO CARBURIZED AT 550ºC, FOR 5H, IN 80%N2+13%H2+7%CO2 GAS MIXTURE AT PRESSURE OF 3 TORR. IMMEDIATELY AFTER NITRO CARBURIZING, SAMPLES WERE POST-OXIDIZED AT 400OC, 450ºC AND 500OC, FOR 1H, BY CHANGING ATMOSPHERE TO 75%O2+25%H2 GAS MIXTURE. THE PROPERTIES OF LAYERS WERE STUDIED BY USING X-RAY DIFFRACTION AND SECONDARY ELECTRON MICROSCOPY. STUDY OF PHASES WHICH ARE FORMED IN OXIDE LAYER, REVEALED THAT OF FORMATION OF FE3O4 PHASE, IS INCREASED BY DECREASING POST-OXIDATION TEMPERATURE. THE RESULT OF POLARIZATION TEST SHOWED THAT CORROSION RESISTANCE IS IMPROVED BY NITRO CARBURIZING AND IT IS FURTHER IMPROVED BY POST-OXIDATION.

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APA: Copy

ESFAHANI, ALIREZA, HEYDARZADEH SOHI, MAHMOUD, RASSIZADEHGHANI, JAFAR, & MAHBOUBI, FARZAD. (2008). EFFECT OF POST-OXIDATION ON CORROSION RESISTANCE OF NITROCARBURIZED AISI 5115 STEEL. NATIONAL VACUUM CONFERENCE IRAN. SID. https://sid.ir/paper/905396/en

Vancouver: Copy

ESFAHANI ALIREZA, HEYDARZADEH SOHI MAHMOUD, RASSIZADEHGHANI JAFAR, MAHBOUBI FARZAD. EFFECT OF POST-OXIDATION ON CORROSION RESISTANCE OF NITROCARBURIZED AISI 5115 STEEL. 2008. Available from: https://sid.ir/paper/905396/en

IEEE: Copy

ALIREZA ESFAHANI, MAHMOUD HEYDARZADEH SOHI, JAFAR RASSIZADEHGHANI, and FARZAD MAHBOUBI, “EFFECT OF POST-OXIDATION ON CORROSION RESISTANCE OF NITROCARBURIZED AISI 5115 STEEL,” presented at the NATIONAL VACUUM CONFERENCE IRAN. 2008, [Online]. Available: https://sid.ir/paper/905396/en

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