Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fiber material with controllable coating thickness as well as preparation method and application
The invention discloses a fiber material with controllable coating thickness as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting SiCfibers with a suspension of rare earth modified lanthanum phosphate powder by adopting a dip coating method so as to allow the rare earth modified lanthanum phosphate powder to be deposited on the surfaces of the fibers to form a coating, and then carrying out sintering treatment; and repeating the steps of depositing the coating and sintering multiple times to form the coating with a preset thickness, wherein the rare earth modified lanthanum phosphate powder has special structures such as a core shell structure, so rare earth elements and lanthanum phosphate can be uniformly distributed; the purposes of uniform coating and controllable thickness are achieved in a manner of dip coating and drying multiple times; and the rare earth elements uniformly distributed in the coating can reducereaction between lanthanum phosphate and SiC at high temperature, and therefore, the problems that lanthanum phosphate reacts with SiC at high temperature, a lanthanum phosphate coating is deposited unevenly and the thickness is not easy to control are solved at the same time.
本发明公开了一种涂层厚度可控的纤维材料以及制备方法和应用，该制备方法包括：采用浸渍‑提拉法将SiC纤维和稀土改性的磷酸镧粉末的悬浮液作用，以使得稀土改性的磷酸镧粉末沉积到纤维表面形成一层涂层，再进行烧结处理。重复上述沉积涂层和烧结处理的步骤多次，以形成预设厚度的涂层。其中，稀土改性的磷酸镧粉末具备核壳等特殊结构使得稀土元素和磷酸镧之间能够均匀分布，多次浸渍提拉、烘干的方式达到涂层均匀、厚度可控的目的，且在涂层中均匀分布的稀土元素可以减小磷酸镧在高温下与SiC的反应。进而达到同时改善磷酸镧在高温下与SiC反应，和磷酸镧涂层沉积不均、厚度不易控制的问题。
Fiber material with controllable coating thickness as well as preparation method and application
The invention discloses a fiber material with controllable coating thickness as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting SiCfibers with a suspension of rare earth modified lanthanum phosphate powder by adopting a dip coating method so as to allow the rare earth modified lanthanum phosphate powder to be deposited on the surfaces of the fibers to form a coating, and then carrying out sintering treatment; and repeating the steps of depositing the coating and sintering multiple times to form the coating with a preset thickness, wherein the rare earth modified lanthanum phosphate powder has special structures such as a core shell structure, so rare earth elements and lanthanum phosphate can be uniformly distributed; the purposes of uniform coating and controllable thickness are achieved in a manner of dip coating and drying multiple times; and the rare earth elements uniformly distributed in the coating can reducereaction between lanthanum phosphate and SiC at high temperature, and therefore, the problems that lanthanum phosphate reacts with SiC at high temperature, a lanthanum phosphate coating is deposited unevenly and the thickness is not easy to control are solved at the same time.
本发明公开了一种涂层厚度可控的纤维材料以及制备方法和应用，该制备方法包括：采用浸渍‑提拉法将SiC纤维和稀土改性的磷酸镧粉末的悬浮液作用，以使得稀土改性的磷酸镧粉末沉积到纤维表面形成一层涂层，再进行烧结处理。重复上述沉积涂层和烧结处理的步骤多次，以形成预设厚度的涂层。其中，稀土改性的磷酸镧粉末具备核壳等特殊结构使得稀土元素和磷酸镧之间能够均匀分布，多次浸渍提拉、烘干的方式达到涂层均匀、厚度可控的目的，且在涂层中均匀分布的稀土元素可以减小磷酸镧在高温下与SiC的反应。进而达到同时改善磷酸镧在高温下与SiC反应，和磷酸镧涂层沉积不均、厚度不易控制的问题。
Fiber material with controllable coating thickness as well as preparation method and application
涂层厚度可控的纤维材料以及制备方法和应用
TAN XI (Autor:in) / ZHU HUICHAO (Autor:in) / ZHANG XIAOFENG (Autor:in) / ZHU XIAGAO (Autor:in) / ZHANG CHENG (Autor:in) / CHEN HUANTAO (Autor:in) / DENG CHUNMING (Autor:in)
22.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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