Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micro/nano dual-scale yttrium oxide crucible and preparation method thereof
The invention discloses a micro/nano dual-scale yttrium oxide crucible. An outer layer is made of micron-scale yttrium oxide, an inner layer is made of nano-scale yttrium oxide, and the nano-scale yttrium oxide on the inner layer is tightly combined with the micron-scale yttrium oxide on the outer layer. The nano-scale yttrium oxide inner layer forms a compact yttrium oxide shell through the self-bonding effect in the sintering process, and in the smelting and precision casting process of the TiAl alloy, erosion of alloy melt is resisted, and the alloy is prevented from being polluted; the micron-scale yttrium oxide outer layer has certain porosity after being sintered, so that the strength of the crucible can be improved, the thermal shock resistance of the crucible is improved in the smelting and precision casting process of the TiAl alloy, and the requirement for high superheat degree during alloy smelting can be met; and the inner layer and the outer layer of the micro/nano dual-scale yttrium oxide crucible are tightly combined, the purity of the yttrium oxide crucible is as high as 99.99%, and the TiAl alloy is prevented from being polluted by impurity elements in the smelting and precision casting process.
本发明公开一种微/纳双尺度氧化钇坩埚，外层由微米级氧化钇制成，内层由纳米级氧化钇构成，且内层纳米级氧化钇与外层微米级氧化钇紧密结合。纳米级氧化钇内层，在烧结过程中通过自粘结作用形成致密的氧化钇壳，在TiAl合金的熔炼与精密铸造过程中，抵抗合金熔体的侵蚀，防止合金受到污染；微米级氧化钇外层，烧结后具有一定的孔隙率，可提高坩埚的强度，在TiAl合金的熔炼与精密铸造过程中，提高了坩埚的抗热震性能，可满足合金熔炼时的高过热度需求；微/纳双尺度氧化钇坩埚内外层结合紧密，所述氧化钇坩埚纯度高达99.99%，避免熔炼与精密铸造过程中杂质元素对TiAl合金造成污染。
Micro/nano dual-scale yttrium oxide crucible and preparation method thereof
The invention discloses a micro/nano dual-scale yttrium oxide crucible. An outer layer is made of micron-scale yttrium oxide, an inner layer is made of nano-scale yttrium oxide, and the nano-scale yttrium oxide on the inner layer is tightly combined with the micron-scale yttrium oxide on the outer layer. The nano-scale yttrium oxide inner layer forms a compact yttrium oxide shell through the self-bonding effect in the sintering process, and in the smelting and precision casting process of the TiAl alloy, erosion of alloy melt is resisted, and the alloy is prevented from being polluted; the micron-scale yttrium oxide outer layer has certain porosity after being sintered, so that the strength of the crucible can be improved, the thermal shock resistance of the crucible is improved in the smelting and precision casting process of the TiAl alloy, and the requirement for high superheat degree during alloy smelting can be met; and the inner layer and the outer layer of the micro/nano dual-scale yttrium oxide crucible are tightly combined, the purity of the yttrium oxide crucible is as high as 99.99%, and the TiAl alloy is prevented from being polluted by impurity elements in the smelting and precision casting process.
本发明公开一种微/纳双尺度氧化钇坩埚，外层由微米级氧化钇制成，内层由纳米级氧化钇构成，且内层纳米级氧化钇与外层微米级氧化钇紧密结合。纳米级氧化钇内层，在烧结过程中通过自粘结作用形成致密的氧化钇壳，在TiAl合金的熔炼与精密铸造过程中，抵抗合金熔体的侵蚀，防止合金受到污染；微米级氧化钇外层，烧结后具有一定的孔隙率，可提高坩埚的强度，在TiAl合金的熔炼与精密铸造过程中，提高了坩埚的抗热震性能，可满足合金熔炼时的高过热度需求；微/纳双尺度氧化钇坩埚内外层结合紧密，所述氧化钇坩埚纯度高达99.99%，避免熔炼与精密铸造过程中杂质元素对TiAl合金造成污染。
Micro/nano dual-scale yttrium oxide crucible and preparation method thereof
一种微纳双尺度氧化钇坩埚及制备方法
FAN JIANGLEI (Autor:in) / LIANG LIUBO (Autor:in) / WANG XIAO (Autor:in) / WEI ZEXIN (Autor:in) / LI YING (Autor:in) / WU SHEN (Autor:in) / WANG YAN (Autor:in) / ZHOU XIANGKUI (Autor:in) / LIU JIANXIU (Autor:in)
26.10.2021
Patent
Elektronische Ressource
Chinesisch
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