Wang X N, Feng Y, Liu H Z, Zhang H, Yan Z C, Bai Y W
School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University Jinan 250061 China
RSC Adv. 2022 Mar 9;12(12):7199-7209. doi: 10.1039/d1ra09189a. eCollection 2022 Mar 1.
In this work, we correlate the microstructure and passivation of the Al Ni Y lightweight glassy ribbons ( = 7 and 10) using various techniques. The overdosed Ni ( = 10) can increase the melt viscosity and then deteriorate its glass-forming ability (GFA), ribbon formability, and Y-depleted extra layer formation. Consequently, the overdosed Ni weakens the passivation stability and corrosion resistance of the as-spun ribbon. The key role of the overdosed Ni can form a strong network and crystalline grain boundary in the amorphous matrix, which can transport Y and O to participate in the oxidation. These results can help us explore a valuable method for designing new Al-based metallic glasses.
在这项工作中，我们使用各种技术关联了Al-Ni-Y轻质玻璃带（=7和10）的微观结构与钝化情况。过量的Ni（=10）会增加熔体粘度，进而降低其玻璃形成能力（GFA）、薄带可成形性以及贫Y额外层的形成。因此，过量的Ni会削弱初生薄带的钝化稳定性和耐腐蚀性。过量Ni的关键作用在于能在非晶基体中形成强大的网络和晶界，这会输送Y和O参与氧化过程。这些结果有助于我们探索一种设计新型铝基金属玻璃的有价值方法。
