Active brazing of zirconia with metallic alloys is a promising method for enhancing the mechanical property of zirconia. However, the brazing process of zirconia and metallic alloys has not been studied in detail because of a limitation in selection of materials and processing conditions. Here, we successfully brazed zirconia with Ti-3Al-2.5V alloy using amorphous Zr₅₄Ti₂₂Ni₁₆Cu₈ active filler alloy. By manipulating the brazing temperature from 800 °C to 860 °C, a highest strength of ~186 MPa was achieved at 860 °C. Reduced brittle (Zr,Ti)₂(Ni,Cu) intermetallic phases from formation of island-type (Zr,Ti) matrix, ZrO_2-X, TiO, and TiO₂ interlayer play a key role in increasing the joint strength. Our findings will be helpful in developing brazing processes for zirconia and metallic alloys.

中文翻译：

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界面组织对非晶态Zr-Ti-Ni-Cu活性钎料钎焊氧化锆/钛合金接头强度的影响

用金属合金主动钎焊氧化锆是提高氧化锆机械性能的一种有前途的方法。然而，由于材料选择和加工条件的限制，还没有详细研究氧化锆和金属合金的钎焊工艺。在这里，我们成功地使用了非晶态Zr ₅₄ Ti ₂₂ Ni ₁₆ Cu ₈活性填充合金与Ti-3Al-2.5V合金钎焊了氧化锆。通过将钎焊温度控制在800°C至860°C之间，在860°C时可获得约186 MPa的最高强度。通过形成岛型（Zr，Ti）基体，ZrO _2-X，TiO和TiO ₂减少了脆性（Zr，Ti）₂（Ni，Cu）金属间相中间层在增加接头强度中起关键作用。我们的发现将有助于开发氧化锆和金属合金的钎焊工艺。