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Antifriction and wear-resistant sealing coating for ceramic matrix composite material and preparation method of antifriction and wear-resistant sealing coating
The invention discloses an antifriction wear-resistant seal coating for a ceramic matrix composite material and a preparation method of the antifriction wear-resistant seal coating. The seal coating consists of a transition layer and a 7wt% Y2O3-stabilized ZrO2-based self-lubricating layer, wherein the transition layer is adhered to a ceramic matrix layer. The preparation method comprises the following steps: selecting 7wt% Y2O3-stabilized ZrO2, CaF2, Mo and Ag powder as raw materials, and carrying out ball-milling mixing on the raw materials according to the mass ratio of the raw materials: 40%-45% of 7wt% Y2O3-stabilized ZrO2, 35%-40% of CaF2, 6%-12% of Mo and 8%-14% of Ag; the powder obtained in the first step and pure Si powder are dried, and the surface of the C/SiC composite material is pretreated; and preparing a pure Si transition layer on the surface of the C/SiC composite material matrix by adopting pure Si powder, and preparing a 7wt% Y2O3-stabilized ZrO2-based self-lubricating layer on the surface of the pure Si transition layer by adopting the mixed powder obtained in the step 1. The coating designed by the invention has no obvious defects of holes, cracks and the like, has excellent tribological properties, and is expected to solve the problem of contact between an engine blade and an abradable seal coating on a turbine outer ring.
本发明公开了一种用于陶瓷基复合材料的减摩耐磨封严涂层及其制备方法，该封严涂层由粘附在陶瓷基体层上的过渡层和7wt% Y2O3稳定ZrO2基自润滑层组成。其制备方法包括：选用7wt% Y2O3稳定ZrO2、CaF2、Mo及Ag粉末作为原材料，按照原材料质量比分别为7wt% Y2O3 稳定ZrO2 40%‑45%、CaF2 35%‑40%、Mo 6%‑12%及Ag 8%‑14%进行球磨混合；将步骤1得到的粉末与纯Si粉末进行烘干处理，将C/SiC复合材料表面进行预处理；采用纯Si粉末在C/SiC复合材料基体表面制备纯Si过渡层，采用步骤1得到的混合粉末在纯Si过渡层表面制备7wt% Y2O3稳定ZrO2基自润滑层。本发明所设计的涂层无明显孔洞裂纹等缺陷，且具有优异的摩擦学性能，有望解决发动机叶片与涡轮外环上的可磨耗封严涂层之间的接触问题。
Antifriction and wear-resistant sealing coating for ceramic matrix composite material and preparation method of antifriction and wear-resistant sealing coating
The invention discloses an antifriction wear-resistant seal coating for a ceramic matrix composite material and a preparation method of the antifriction wear-resistant seal coating. The seal coating consists of a transition layer and a 7wt% Y2O3-stabilized ZrO2-based self-lubricating layer, wherein the transition layer is adhered to a ceramic matrix layer. The preparation method comprises the following steps: selecting 7wt% Y2O3-stabilized ZrO2, CaF2, Mo and Ag powder as raw materials, and carrying out ball-milling mixing on the raw materials according to the mass ratio of the raw materials: 40%-45% of 7wt% Y2O3-stabilized ZrO2, 35%-40% of CaF2, 6%-12% of Mo and 8%-14% of Ag; the powder obtained in the first step and pure Si powder are dried, and the surface of the C/SiC composite material is pretreated; and preparing a pure Si transition layer on the surface of the C/SiC composite material matrix by adopting pure Si powder, and preparing a 7wt% Y2O3-stabilized ZrO2-based self-lubricating layer on the surface of the pure Si transition layer by adopting the mixed powder obtained in the step 1. The coating designed by the invention has no obvious defects of holes, cracks and the like, has excellent tribological properties, and is expected to solve the problem of contact between an engine blade and an abradable seal coating on a turbine outer ring.
本发明公开了一种用于陶瓷基复合材料的减摩耐磨封严涂层及其制备方法，该封严涂层由粘附在陶瓷基体层上的过渡层和7wt% Y2O3稳定ZrO2基自润滑层组成。其制备方法包括：选用7wt% Y2O3稳定ZrO2、CaF2、Mo及Ag粉末作为原材料，按照原材料质量比分别为7wt% Y2O3 稳定ZrO2 40%‑45%、CaF2 35%‑40%、Mo 6%‑12%及Ag 8%‑14%进行球磨混合；将步骤1得到的粉末与纯Si粉末进行烘干处理，将C/SiC复合材料表面进行预处理；采用纯Si粉末在C/SiC复合材料基体表面制备纯Si过渡层，采用步骤1得到的混合粉末在纯Si过渡层表面制备7wt% Y2O3稳定ZrO2基自润滑层。本发明所设计的涂层无明显孔洞裂纹等缺陷，且具有优异的摩擦学性能，有望解决发动机叶片与涡轮外环上的可磨耗封严涂层之间的接触问题。
Antifriction and wear-resistant sealing coating for ceramic matrix composite material and preparation method of antifriction and wear-resistant sealing coating
一种用于陶瓷基复合材料的减摩耐磨封严涂层及其制备方法
HUA KE (author) / WANG XIAOLI (author) / WANG YI (author) / WU HONGXING (author) / WANG HAIFENG (author)
2025-01-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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