A RESEARCH ON SURFACE OXIDATION OF CO67FE4CR7SI8B14 AMORPHOUS RIBBON DURING CRYSTALLIZATION

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JAMILI SHIRVAN Z.; HADAD SABZEVAR M.

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Journal: Journal of Metallurgical and Materials Engineering Year:2013 | Volume:24 | Issue:2 Page(s): 59-68

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Title

A RESEARCH ON SURFACE OXIDATION OF CO67FE4CR7SI8B14 AMORPHOUS RIBBON DURING CRYSTALLIZATION

Author(s)

JAMILI SHIRVAN Z. | HADAD SABZEVAR M. | Issue Writer Certificate

Keywords

AMORPHOUS ALLOYQ3

CO67FE4CR7SI8B14Q3

CRYSTALLIZATIONQ3

ISOTHERMAL ANNEALINGQ3

SURFACE OXIDATIONQ3

Abstract

Deterioration of soft magnetic properties of amorphous ribbons happens when oxygen atoms diffuse in matrix during heat treatment. In this research, SURFACE OXIDATION of CO67FE4CR7SI8B14 amorphous ribbons prepared by Planar Flow Melt Spinning (PFMS) process during CRYSTALLIZATION was investigated.In the first step, thermal stability of the ribbons was studied by Differential Thermal Analysis (DTA). Amorphous samples were then annealed isothermally in argon atmosphere with 0.2% oxygen for 30 minutes at the temperature range of 350-650oC with 50oC interval. Heat treated samples were studied by X-Ray Diffraction (XRD) analysis, Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) analysis. According to the results, SURFACE OXIDATION started around 550oC. The oxide was found to be SiO2 with amorphous structure. An increase in the temperature up to 600oC, no crystalline phases was recognized by XRD in the sample annealed at this temperature, which can be attributed to increasing the thickness and continuity of the oxide layer. For the temperatures above 600ºC, the instability and discontinuity of the oxide layer were observed in some areas. In these areas, oxygen diffused in the matrix and combined with cobalt as CoO, was also observed.

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APA: Copy

JAMILI SHIRVAN, Z., & HADAD SABZEVAR, M.. (2013). A RESEARCH ON SURFACE OXIDATION OF CO₆₇FE₄CR₇SI₈B₁₄ AMORPHOUS RIBBON DURING CRYSTALLIZATION. JOURNAL OF METALLURGICAL AND MATERIALS ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), 24(2), 59-68. SID. https://sid.ir/paper/196072/en

Vancouver: Copy

JAMILI SHIRVAN Z., HADAD SABZEVAR M.. A RESEARCH ON SURFACE OXIDATION OF CO₆₇FE₄CR₇SI₈B₁₄ AMORPHOUS RIBBON DURING CRYSTALLIZATION. JOURNAL OF METALLURGICAL AND MATERIALS ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)[Internet]. 2013;24(2):59-68. Available from: https://sid.ir/paper/196072/en

IEEE: Copy

Z. JAMILI SHIRVAN, and M. HADAD SABZEVAR, “A RESEARCH ON SURFACE OXIDATION OF CO₆₇FE₄CR₇SI₈B₁₄ AMORPHOUS RIBBON DURING CRYSTALLIZATION,” JOURNAL OF METALLURGICAL AND MATERIALS ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), vol. 24, no. 2, pp. 59–68, 2013, [Online]. Available: https://sid.ir/paper/196072/en

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