Abstract
The influence of static magnetic field of 4 T on electroless Ni-P deposition process and post-annealing was investigated in this study. The results from differential scanning calorimeter have shown that the imposed high magnetic field during electroless deposition had a further beneficial effect on defects migration and annihilation after Ni-P alloys heated at around 250 °C. Furthermore, it is found that some metastable phases were presented after magnetic annealing at 300 °C (below crystallization temperature), and the hardness of magnetic-annealed Ni-P alloys was greater than that of conventionally annealed Ni-P alloys. The morphology of the Ni-P alloys was characterized by scanning electron microscope, and shows typical spherical nodular structure for the as-deposited Ni-P alloys. The boundaries of these spherical nodular crystals blurred after annealing; however, the boundaries were apparently observed after magnetic annealing at 300 °C.
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Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (Grant Nos. 51061130557, 51101034, and 51101032); the Fundamental Research Funds for the Central Universities (Grant No. N090209001); the Wuhan National High Magnetic Field Center (Grant No. WHMFCK2011006), Science & Research Project of Liaoning Province Education Department (Project No. L2012064); and the 111 Project (Grant No. B07015).
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Lyu, X., Li, D., Wang, Q. et al. The Effect of Static Magnetic Field on Electroless Ni-P In Situ Deposition and Post-annealing. J. of Materi Eng and Perform 22, 3134–3139 (2013). https://doi.org/10.1007/s11665-013-0536-9
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DOI: https://doi.org/10.1007/s11665-013-0536-9