Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydration flux assisted densification
Embodiments relate to an improved hydration flux assisted densification process that introduces a transport phase for sintering (formed by introducing water during performance of the process to inhibit melting temperature), the transport phase being a non-aqueous solution. The method can facilitate sintering in a low temperature range (equal to or lower than 300 DEG C) to yield > 90% densification without the need for additional post-treatment steps, otherwise requiring additional post-treatment steps if conventional methods are used. Controlling the pressure and water content used during the process can enhance the densification mechanism associated with dissolution-reprecipitation, thereby allowing a larger range of composition lineages of densifiable materials, reducing the amount of transport phase required, reducing impurities, and improving the properties of densified materials. Certain hydrated acetate powders can be used to produce a hydroxide mixed flux that is better for low temperature densification processes.
实施例涉及一种改进的水化助熔剂辅助的致密化方法，该方法引入用于烧结的传输相(通过在执行该方法期间引入水以抑制熔融温度而形成)，该传输相为非水溶液。该方法可促进在低温范围(等于或低于300℃)烧结以产生＞90％的致密化，而不需要另外的后处理步骤，否则，如果使用常规方法则需要另外的后处理步骤。在该方法期间控制所用的压力和水含量可增强与溶解‑再沉淀相关的致密化机理，从而允许更大范围的可致密化材料的组成谱系，减少所需的传输相的量，减少杂质并改进致密化材料的特性。某些水合乙酸盐粉末可以用于产生对低温致密化方法更好的氢氧化物混合助熔剂。
Hydration flux assisted densification
Embodiments relate to an improved hydration flux assisted densification process that introduces a transport phase for sintering (formed by introducing water during performance of the process to inhibit melting temperature), the transport phase being a non-aqueous solution. The method can facilitate sintering in a low temperature range (equal to or lower than 300 DEG C) to yield > 90% densification without the need for additional post-treatment steps, otherwise requiring additional post-treatment steps if conventional methods are used. Controlling the pressure and water content used during the process can enhance the densification mechanism associated with dissolution-reprecipitation, thereby allowing a larger range of composition lineages of densifiable materials, reducing the amount of transport phase required, reducing impurities, and improving the properties of densified materials. Certain hydrated acetate powders can be used to produce a hydroxide mixed flux that is better for low temperature densification processes.
实施例涉及一种改进的水化助熔剂辅助的致密化方法，该方法引入用于烧结的传输相(通过在执行该方法期间引入水以抑制熔融温度而形成)，该传输相为非水溶液。该方法可促进在低温范围(等于或低于300℃)烧结以产生＞90％的致密化，而不需要另外的后处理步骤，否则，如果使用常规方法则需要另外的后处理步骤。在该方法期间控制所用的压力和水含量可增强与溶解‑再沉淀相关的致密化机理，从而允许更大范围的可致密化材料的组成谱系，减少所需的传输相的量，减少杂质并改进致密化材料的特性。某些水合乙酸盐粉末可以用于产生对低温致密化方法更好的氢氧化物混合助熔剂。
Hydration flux assisted densification
水化助熔剂辅助的致密化
MALIA JOHN P (Autor:in) / LOHM STEFAN (Autor:in) / FLOYD RAYMOND (Autor:in)
08.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME