The effects of CuO content in Bi‐B‐Si‐Zn glass on the interfacial reaction between the glasses and FeSiCr alloy powder and NiCuZn ferrites, microstructure, and adhesion strength were investigated. For the FeSiCr alloy and glass interface, the iron in FeSiCr alloy dissolves into the glass and is oxidized into Fe³⁺ during heating. The copper ions in the glass are reduced to elemental copper near the interface to maintain charge neutrality. This leads to chemical bonding between the FeSiCr alloy and glass at 750°C under air atmosphere. The CuO in the glass increases the wettability and adhesion between the FeSiCr alloy and glass. The redox reaction inhibits crack propagation from Vickers indentations in the spherical copper‐rich precipitates near the interface, but the presence of pores in the glass layer would decrease the adhesion strength. In the FeSiCr alloy/glass/NiCuZn ferrites/glass/FeSiCr alloy structure, glass with 5 wt% CuO exhibited higher pulling strength. Moreover, the amount of elemental copper precipitates increased as the heat‐treatment temperature was increased to 800 and 850°C, leading to an increase in the glass and FeSiCr alloy adhesion strength.

中文翻译：

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玻璃中CuO含量对NiCuZn铁氧体-FeSiCr合金复合材料界面反应的影响

研究了Bi-B-Si-Zn玻璃中CuO含量对玻璃与FeSiCr合金粉末和NiCuZn铁氧体之间的界面反应，微观结构和附着强度的影响。对于FeSiCr合金和玻璃界面，FeSiCr合金中的铁溶解到玻璃中并被氧化成Fe ³⁺在加热过程中。玻璃中的铜离子在界面附近还原为元素铜，以保持电荷中性。这导致FeSiCr合金与玻璃在750°C的空气气氛下化学键合。玻璃中的CuO可提高FeSiCr合金与玻璃之间的润湿性和粘附性。氧化还原反应抑制了界面附近球形富铜沉淀物中维氏凹痕的裂纹扩展，但是玻璃层中存在孔会降低粘合强度。在FeSiCr合金/玻璃/ NiCuZn铁氧体/玻璃/ FeSiCr合金结构中，CuO含量为5重量％的玻璃表现出更高的拉伸强度。此外，随着热处理温度提高到800和850°C，元素铜沉淀物的数量也增加，