Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Environmental barrier coating and preparation method thereof
The invention relates to the technical field of high-temperature coatings, in particular to an environmental barrier coating and a preparation method thereof. According to the specific technical scheme, the environment barrier coating comprises a bonding layer and multiple layers of component gradient coatings mainly composed of rare earth monosilicate and rare earth disilicate, wherein the bonding layer and the multiple layers of component gradient coatings are sequentially prepared on a ceramic matrix composite substrate; the rare earth monosilicate comprises monosilicate of one or more rare earths of samarium, gadolinium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium, and the rare earth bisilicate comprises bisilicate of one or more rare earths of samarium, gadolinium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium. The thickness of each single layer of the environmental barrier coating provided by the invention is relatively small, the component change of adjacent gradient coatings is smaller, the change of relative thermal expansion coefficients is smaller, and thermal stress relief under a thermal cycle condition is facilitated.
本发明涉及高温涂层技术领域，具体涉及一种环境障碍涂层及制备方法。具体技术方案为：一种环境障碍涂层，包括依次制备在陶瓷基复合材料基底上的粘结层和多层主要由稀土单硅酸盐和稀土双硅酸盐组成的组分梯度涂层；所述稀土单硅酸盐包括钐、钆、钬、铒、铥、镱、镥、钪和钇中的一种或多种稀土的单硅酸盐，所述稀土双硅酸盐包括钐、钆、钬、铒、铥、镱、镥、钪和钇中的一种或多种稀土的双硅酸盐。本发明提供的环境障碍涂层的每单层厚度较小，相邻梯度涂层组分变化更小，相对热膨胀系数变化更小，有益于热循环条件下的热应力缓解。
Environmental barrier coating and preparation method thereof
The invention relates to the technical field of high-temperature coatings, in particular to an environmental barrier coating and a preparation method thereof. According to the specific technical scheme, the environment barrier coating comprises a bonding layer and multiple layers of component gradient coatings mainly composed of rare earth monosilicate and rare earth disilicate, wherein the bonding layer and the multiple layers of component gradient coatings are sequentially prepared on a ceramic matrix composite substrate; the rare earth monosilicate comprises monosilicate of one or more rare earths of samarium, gadolinium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium, and the rare earth bisilicate comprises bisilicate of one or more rare earths of samarium, gadolinium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium. The thickness of each single layer of the environmental barrier coating provided by the invention is relatively small, the component change of adjacent gradient coatings is smaller, the change of relative thermal expansion coefficients is smaller, and thermal stress relief under a thermal cycle condition is facilitated.
本发明涉及高温涂层技术领域，具体涉及一种环境障碍涂层及制备方法。具体技术方案为：一种环境障碍涂层，包括依次制备在陶瓷基复合材料基底上的粘结层和多层主要由稀土单硅酸盐和稀土双硅酸盐组成的组分梯度涂层；所述稀土单硅酸盐包括钐、钆、钬、铒、铥、镱、镥、钪和钇中的一种或多种稀土的单硅酸盐，所述稀土双硅酸盐包括钐、钆、钬、铒、铥、镱、镥、钪和钇中的一种或多种稀土的双硅酸盐。本发明提供的环境障碍涂层的每单层厚度较小，相邻梯度涂层组分变化更小，相对热膨胀系数变化更小，有益于热循环条件下的热应力缓解。
Environmental barrier coating and preparation method thereof
一种环境障碍涂层及其制备方法
XU BAOSHENG (Autor:in) / WANG SHUN (Autor:in) / ZHENG TAO (Autor:in) / WANG ZELONG (Autor:in)
15.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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