论文标题
二氧化碳作为烧结辅助的影响对氧化锆冷烧结的致密化
Influence of Bismuth Oxide as a Sintering Aid on the Densification of Cold Sintering of Zirconia
论文作者
论文摘要
氧化锆（ZRO2）已成为一种有前途的技术陶瓷，无论是高温结构材料和热屏障涂料等。ZRO2与Spark血浆血浆烧结（SPS）的传统合成通常需要烧结温度高达1200C。对降低烧结温度以降低能耗和热应力的普遍兴趣导致对两条有前途的途径进行研究，通过温度依赖的化学反应性和烧结的辅助物进行冷烧结，从而促进了质量运输并改善了致密化。在这里，我们通过开发一个通过Zr（OH）4到ZRO2和液相BI2O3的原位转换而受益于水蒸气的单步烧结过程来结合两者。所得的ZRO2的相对密度高于80％，烧结温度低至900c。
Zirconia (ZrO2) has emerged as a promising technical ceramic, both as high temperature structural material and thermal barrier coating material, etc. The traditional synthesis of ZrO2 with spark plasma sintering (SPS) usually requires a sintering temperature as high as 1200C. General interest in lowering the sintering temperature to reduce energy consumption and thermal stresses has led to research on two promising routes, cold sintering via temperature-dependent chemical reactivity and sintering aids, which facilitates mass transport and improves densification. Here we combine both by developing a single-step sintering process benefitting from both water vapor through the in-situ conversion of Zr(OH)4 to ZrO2 and liquid phase Bi2O3 as a sintering aid. The resultant ZrO2 has a relative density above 80 percent with a sintering temperature as low as 900C.
