Synthesis and properties of bulk metallic glasses in the ternary Ni–Nb–Zr alloy system
Synthesis and properties of bulk metallic glasses in the ternary Ni–Nb–Zr alloy system
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DOI：
10.1016/j.msea.2008.04.021
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发表时间：
2008-09
期刊：
影响因子：
6.4
通讯作者：
Zhengwang Zhu;Haifeng Zhang;B. Ding;Zushu Hu
中科院分区：
文献类型：
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作者：
Zhengwang Zhu;Haifeng Zhang;B. Ding;Zushu Hu
在Ni-Nb-Zr体系中合成了热稳定性高、力学性能好、耐腐蚀性能好的大块金属玻璃（bmg）。形成了60<Ni<64, 28<Nb<38, 0<Zr<9的大块玻璃形区。发现%)。玻璃形成的临界尺寸为3mm。所研究的ni基bmg具有880-900K的高玻璃化转变温度和915-932K的高凝固结晶温度，抗压断裂强度约为3.0-3.2GPa，抗压塑性约为2%。电化学测量表明，它们还具有很高的耐腐蚀性，即1.5V以上的大钝化区域（与饱和甘汞参比电极相比）。仔细研究了Zr含量对玻璃形成能力（GFA）和腐蚀行为的影响，表明加入一定量的Zr可以提高玻璃形成能力和耐腐蚀性。
Bulk metallic glasses (BMGs) with high thermal stability, good mechanical properties and high corrosion resistance were synthesized in the Ni–Nb–Zr system. A large bulk glass-forming region with 60<Ni<64, 28<Nb<38 and 0<Zr<9 (in at.%) was found. The critical size for the glass formation is 3mm. These investigated Ni-based BMGs process high glass transition temperature of about 880–900K and high on-set crystallization temperature of 915–932K as well as high compressive fracture strength of approximate 3.0–3.2GPa along with some compressive plasticity of about 2%. Electrochemical measurements indicate they also exhibit high corrosion resistance, i.e., large passive region above 1.5V (vs. saturated calomel reference electrode, SCE). The influence of the Zr content on the glass-forming ability (GFA) and corrosion behaviors was carefully studied, indicating that some Zr addition improves the GFA and corrosion resistance.