Synthesis of intermetallic Ni3Al Alloy: properties and high temperature oxidation behavior
Two different methods were utilized to synthesize intermetallic nickel aluminide alloy. The first method was combination of powder metallurgy and reaction synthesis (IMC-RS) and the second method was plasma melting to form homogenous plasma melted samples (IMC-PM). XRD patterns for both samples show...
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| Format: | Article |
| Language: | English |
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Trans Tech Publications, Switzerland
2010
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| Online Access: | http://irep.iium.edu.my/16389/ http://irep.iium.edu.my/16389/ http://irep.iium.edu.my/16389/ http://irep.iium.edu.my/16389/1/Synthesis_of_Intermetallic_Ni3Al_Alloy.pdf |
| Summary: | Two different methods were utilized to synthesize intermetallic nickel aluminide alloy. The first method was combination of powder metallurgy and reaction synthesis (IMC-RS) and the second method was plasma melting to form homogenous plasma melted samples (IMC-PM). XRD patterns for both samples showed complete formation of single phase Ni3Al. Saturation magnetization value for IMC-RS was 0.445 emu/g and IMC-PM was 0.157 emu/g. This was comparable with Ms value of commercial Ni3Al from Alfa Aeser (0.398 emu/g). The reduced elastic modulus, Er value of IMC-PM and IMC-RS were 441.09 MPa. 408.2 MPa respectively. Both samples were exposed to 1%SO2/air gas mixture at 1000°C for 24-hour duration. The isothermal kinetic results for both samples were parabolic indicating rate limiting step. The oxide scales consisted of NiO, NiAl2O4 and Al2O3. © (2010) Trans Tech Publications.
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