Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material and preparation method thereof
The invention discloses a high-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material and a preparation method thereof.The high-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material is prepared from rare earth oxide RE2O3, tantalum pentoxide and dopant Y2O3, the molar ratio of the rare earth oxide RE2O3 to the tantalum pentoxide is 1: 1, RETaO4 powder is synthesized through a solid-phase method, Y2O3 is doped into the RETaO4 powder, and after ball milling, drying and sieving, the high-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material is obtained; and carrying out spark plasma sintering to obtain the Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material. The material has low thermal conductivity, excellent high-temperature fracture toughness and excellent oxygen barrier performance, and can hinder diffusion of oxygen ions, avoid growth of TGO and prolong the service life of a coating.
本专利申请公开了一种耐高温Y2O3‑RETaO4氧障/热障陶瓷一体化材料及其制备方法，原料包括稀土氧化物RE2O3、五氧化二钽和掺杂剂Y2O3，稀土氧化物RE2O3和五氧化二钽的摩尔比为1：1，利用固相法合成RETaO4粉体，将Y2O3掺杂于RETaO4粉体中，经球磨、烘干、过筛后，利用放电等离子烧结获得Y2O3‑RETaO4氧障/热障陶瓷一体化材料。该材料具有较低的热导率，优异的高温断裂韧性，同时还具有优异的氧障性能，即能阻碍氧离子的扩散，避免TGO的生长，延长涂层的使用寿命。
High-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material and preparation method thereof
The invention discloses a high-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material and a preparation method thereof.The high-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material is prepared from rare earth oxide RE2O3, tantalum pentoxide and dopant Y2O3, the molar ratio of the rare earth oxide RE2O3 to the tantalum pentoxide is 1: 1, RETaO4 powder is synthesized through a solid-phase method, Y2O3 is doped into the RETaO4 powder, and after ball milling, drying and sieving, the high-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material is obtained; and carrying out spark plasma sintering to obtain the Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material. The material has low thermal conductivity, excellent high-temperature fracture toughness and excellent oxygen barrier performance, and can hinder diffusion of oxygen ions, avoid growth of TGO and prolong the service life of a coating.
本专利申请公开了一种耐高温Y2O3‑RETaO4氧障/热障陶瓷一体化材料及其制备方法，原料包括稀土氧化物RE2O3、五氧化二钽和掺杂剂Y2O3，稀土氧化物RE2O3和五氧化二钽的摩尔比为1：1，利用固相法合成RETaO4粉体，将Y2O3掺杂于RETaO4粉体中，经球磨、烘干、过筛后，利用放电等离子烧结获得Y2O3‑RETaO4氧障/热障陶瓷一体化材料。该材料具有较低的热导率，优异的高温断裂韧性，同时还具有优异的氧障性能，即能阻碍氧离子的扩散，避免TGO的生长，延长涂层的使用寿命。
High-temperature-resistant Y2O3-RETaO4 oxygen barrier/thermal barrier ceramic integrated material and preparation method thereof
一种耐高温Y2O3-RETaO4氧障/热障陶瓷一体化材料及其制备方法
ZHONG XIAOYU (Autor:in) / FENG JING (Autor:in) / WANG JUN (Autor:in) / ZHANG YUXUAN (Autor:in) / SU TAO (Autor:in)
03.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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