CHARACTERIZATION OF AL-SI-NI TERNARY ALLOY SYNTHESIS FROM REDUCTION OF SODIUM-FLUOSILICATE AND NICKEL OXIDE | ||||
Journal of Al-Azhar University Engineering Sector | ||||
Article 30, Volume 13, Issue 48, July 2018, Page 1100-1108 PDF (562.7 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/auej.2018.18989 | ||||
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Authors | ||||
Mohammed Farag1; Moatasem Kh1; A A Atlam2; A M Omran1 | ||||
1Mining and Metallurgical Engineering Department, Faculty of Engineering, Al-Azhar University, Qena- Egypt | ||||
2Mining and Petroleum Engineering, Faculty of Engineering, Al_Azhar University, Cairo- Egypt. Corresponding author | ||||
Abstract | ||||
A new Al-Si-Ni high-temperature processed alloy has been obtained using sodium fluosilicate as a source of Si and nickel oxide as a source of Ni. Throughout the study, we tested the optimum parameters affecting the preparation of Al-Si-Ni ternary alloy; bath temperature, Na2SiF6/Altotal w.t ratio, Ni2O3/Altotal and reaction time. The optimum processing parameters are; temperature 950oC, Na2SiF6/Altotal wt. ratio is 1, Ni2O3/Altotal wt. ratio is 0.082 and reaction time is 25 min. Some tests such as chemical analysis, X-ray diffraction and microstructure examination were carried out on the produced alloys. The obtained results indicate that the produced alloys containing up to 10.75% Si and 2.86 Ni in the form of Al3Ni. The presence of eutectic Si and eutectic Al3Ni could form interconnected system and it can be used as high-performance alloys at elevated temperature. | ||||
Keywords | ||||
words: High temperature alloys; Sodium fluosilicate; Al-Si-Ni ternary alloy; Nickel oxide | ||||
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