Cladding of Carbon Steel via Laser-Synthesis of Titanium Carbide from Activated Ilmenite

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Khalili Arman; Mojtahedi Milad; Goodarzi Massoud; Torkamani Mohammad Javad

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Journal: IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING Year:2019 | Volume:- | Issue:40 Page(s): 23-35

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Title

Cladding of Carbon Steel via Laser-Synthesis of Titanium Carbide from Activated Ilmenite

Author(s)

Khalili Arman | Mojtahedi Milad | Goodarzi Massoud | Torkamani Mohammad Javad | Issue Writer Certificate

Keywords

Laser CladdingQ1

Hard Composite CoatingQ1

Titanium Carbide (TiC)Q2

Mechanical ActivationQ2

Graded StructureQ1

Abstract

Synthesis of a hard layer on the surface of mild steel is a proper way to rise its performance. Titanium carbide is among the preferred wear-resistant materials. In this research, the carbothermal synthesis of TiC via pulsed laser is studied. Ilmenite is used, as an economic raw material, for in-situ synthesis of TiC. However, the conversion of FeTiO3 to TiC in the short period of laser processing is challenging. Therefore two solutions were accompanied: the applied carbon content was more than the stoichiometry of reduction, while the blended ilmenite and graphite powders were mechanically activated. The increase of activation time to 200 hours was investigated via X-ray diffraction analysis. Afterward, a layer of the powder was preplaced on the substrate and the Laser Cladding was conducted. The effect of Mechanical Activation on the formation of the dispersed particles is studied, especially considering the transformation of oxides to TiC. SEM with EDS analyzer and XRD analysis were applied for this aim. The morphology of TiC particles and the microstructure of the matrix were also deliberated. The characteristic microstructure of directional solidification with equiaxed, cellular, dendritic and eutectic regions was observed. Otherwise, the Vickers microhardness measurements represented a gradual increase from the substrate toward the surface, which has reached to 1600 HV. It is confirmed that the synthesis of a composite layer with gradual dispersion of TiC particles via laser reduction of ilmenite is a feasible process.

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APA: Copy

Khalili, Arman, Mojtahedi, Milad, Goodarzi, Massoud, & Torkamani, Mohammad Javad. (2019). Cladding of Carbon Steel via Laser-Synthesis of Titanium Carbide from Activated Ilmenite. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, -(40 ), 23-35. SID. https://sid.ir/paper/390774/en

Vancouver: Copy

Khalili Arman, Mojtahedi Milad, Goodarzi Massoud, Torkamani Mohammad Javad. Cladding of Carbon Steel via Laser-Synthesis of Titanium Carbide from Activated Ilmenite. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING[Internet]. 2019;-(40 ):23-35. Available from: https://sid.ir/paper/390774/en

IEEE: Copy

Arman Khalili, Milad Mojtahedi, Massoud Goodarzi, and Mohammad Javad Torkamani, “Cladding of Carbon Steel via Laser-Synthesis of Titanium Carbide from Activated Ilmenite,” IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. -, no. 40 , pp. 23–35, 2019, [Online]. Available: https://sid.ir/paper/390774/en

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