Characterization of Ni_3Al and Ti_3Al Coatings Produced by Electric Current Activated Sintering Method

• Authors: N. Ergin , G. Yoruk , O. Ozdemir
• Languages of publication: EN

Abstracts

EN

The present study reports on Ni_3Al and Ti_3Al-based intermetallics coated on AISI 1010 steel substrate by one-step pressure assisted electric current activated sintering method. Ni, Ti, and Al elemental powders were mixed in the stoichiometric ratio corresponding to the Ni_3Al and Ti_3Al intermetallics at molar proportion of 3:1. The mixed coating powders were placed onto the steel substrate in a mold, and pressed with compressive stress of 100 MPa and then, electric current: 1100-1200 A, voltage 2.9-3.4 V was applied for 15 min during coating. As-synthesized coatings seem to have good adherence with many small porosities. The phases formed in the Ni_3Al coating layer were Ni_3Al as a major phase beside NiO and NiAl_2O_4 trace phases, which were confirmed by X-ray diffraction analysis. However, TiAl and Ti trace phases besides major Ti_3Al phase were detected in the Ti_3Al coating. The hardness of the Ni_3Al, Ti_3Al coatings and AISI 1010 substrate was approximately 321 ± 18, 445 ± 13 and 157 HV_{0.5}, respectively.

Keywords

EN

81.20.Ev; 81.40.Pq

Discipline

• 81.40.Pq: Friction, lubrication, and wear
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 2
• Pages: 245-247

Dates

published

2013-02

Contributors

author

N. Ergin

• Technology Faculty, Department of Metallurgy and Materials Engineering, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey

author

G. Yoruk

• Technology Faculty, Department of Metallurgy and Materials Engineering, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey

author

O. Ozdemir

• Technology Faculty, Department of Metallurgy and Materials Engineering, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey

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Identifiers

DOI

10.12693/APhysPolA.123.245