Ni77B23-xSix (x=3, 5, 6.5) およびNi77.5B14.6Si7.9 非晶質合金の結晶化過程
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The effects of metalloid elements (B and Si) on the crystallization in amorphous Ni77B23-xSix (x=3, 5, 6.5) and Ni77.5B14.6Si7.9 alloys were investigated by means of electrical resistance measurement, thermal analysis (DSC) and X-ray diffractometry. The crystallization always started with the formation of fcc-Ni (containing metalloid elements), which was followed by the precipitation of Ni3B. The crystallization temperature and the activation energy for the crystallization of Ni both increased with increasing Si content in alloys. The Avrami exponent found for the crystallization of Ni was 1.5 showing no compositional dependence. The increase in thermal stability by Si addition is discussed from the difference of bonding strength between Ni-B and Ni-Si atom pairs.
- 公益社団法人 応用物理学会の論文
公益社団法人 応用物理学会 | 論文
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