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化学学报
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化学学报 ›› 1995, Vol. 53 ›› Issue (12): 1168-1172. 上一篇    下一篇

研究论文

超细非晶镍合金的化学制备及类金属元素对性质的影响

沈俭一;张庆红;李智渝;陈懿   

  1. 南京大学化学系
  • 发布日期:1995-12-15

The chemical preparation of ultrafine amorphou nickel alloys and the influence of metalloid elements on properties

SHEN JIANYI;ZHANG QINGHONG;LI ZHIYU;CHEN YI   

  • Published:1995-12-15

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515

被引次数

62 | 9

常温下分别使用KBH4和NaH2PO2在水溶液中还原Ni^2^+制得了Ni65B35和Ni89P11超细非晶合金(UFAAP), 同时使用KBH4和NaH2PO2还原Ni^2^+制得了Ni73P13B14UFAAP. Ni-P的粒径较大, 约为110nm, Ni-B的粒径较小, 约为20nm,Ni-P-B的粒径居其之间, 约为40nm。XPS表明, Ni-P间的相互作用强于Ni-B间的相互作用, Ni-P-B中P的电子状态与Ni-P中的相似。Ni-P-B比Ni-P的比表面积高得多,Ni-P-B比Ni-B和Ni-P具有更好的非晶态稳定性, 在573K热处理, 它的非晶态保持完好。晶化结果也表明Ni-P-B中Ni-P间的相互作用比Ni-B间的强。

关键词: 催化剂, 镍合金, Ｘ射线衍射分析, 电感耦合等离子体, 磷合金, 硼合金, 非晶态合金, 四氢化硼钾, 磷酸二氢化钠

Ni65B35 and Ni80P11 ultrafine amorphous alloy particles (UFAAP) have been prepared by the reduction of Ni^2^+ in aqueous solution with KBH4 and NaH2PO2, respectively, at room temperature. Ni73P13B14 UFAAP has been prepared by the reduction of Ni^2^+ with KBH4 and NaH2PO2 at the same time. The Ni-P sample has relatively large particle size (c.a. 110nm) while Ni-B sample exhibits much smaller particle size (c.a. 20nm). The particle size of Ni-P-B (c.a. 40nm) is close to that of Ni-B. XPS showed that the interaction between Ni and P is stronger than that between Ni and B, since the electronic charge of P is similar in the Ni-P-B and Ni-P samples. However, the Ni-P-B sample is of higher surface area than Ni-P. In an addition, the Ni-P-B sample exhibits higher stability in amorphous state than Ni-P and Ni-B. The amorphous state of the Ni-P-B sample remained after heat treatment in N2 at 573K. The transformation of Ni3B to Ni3P during crystallization of the Ni-P-B sample also indicated that the interaction between Ni and P is stronger than that between Ni and B.

Key words: CATALYST, NICKEL ALLOYS, X-RAY DIFFRACTION ANALYSIS, ICP, PHOSPHORUS ALLOYS, BORON ALLOY, AMORPHOUS ALLOY

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