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SiC cladding tube preparation method and SiC cladding tube
The invention discloses a preparation method of a SiC cladding tube and the SiC cladding tube. The preparation method of the SiC cladding tube comprises the following steps: S1, providing a columnar oxide core mold; s2, preparing a SiC composite layer on the surface of the oxide core mold; and S3, the oxide core mold is removed through a mechanical method, and the SiC cladding tube is obtained. According to the preparation method of the SiC cladding tube, the core mold is made of the oxide material, the thermal expansion coefficient of the core mold is small, the expansion of the core mold is small in the preparation process, and the internal residual stress of the prepared SiC cladding tube is small; the oxide core mold has the advantages of being good in high temperature resistance, high in melting point and the like, the deformation amount of the core mold is small in the process of preparing the SiC cladding tube, the straightness and roundness of the SiC cladding can be improved, the core mold does not react with the inner wall of the SiC composite layer at the high temperature, and the purity of the prepared SiC cladding tube is improved; the oxide core mold reduces the difficulty of the demolding process, and demolding of the full-size SiC cladding tube can be achieved.
本发明公开了一种SiC包壳管制备方法及SiC包壳管，SiC包壳管制备方法包括以下步骤：S1、提供柱状的氧化物芯模；S2、在所述氧化物芯模表面制备SiC复合层；S3、通过机械方法去除所述氧化物芯模，得到SiC包壳管。本发明的SiC包壳管制备方法，芯模选用氧化物材料制成，本身的热膨胀系数较小，制备过程中芯模膨胀较小，制备得到的SiC包壳管内部残余应力较小；氧化物芯模具有耐高温性能好、熔点高等优点，制备SiC包壳管过程中芯模变形量较小，能够改善SiC包壳的直线度和圆度，在高温下与SiC复合层内壁不发生反应，提高了制备的SiC包壳管纯度；氧化物芯模降低脱模工艺难度，可实现全尺寸SiC包壳管脱模。
SiC cladding tube preparation method and SiC cladding tube
The invention discloses a preparation method of a SiC cladding tube and the SiC cladding tube. The preparation method of the SiC cladding tube comprises the following steps: S1, providing a columnar oxide core mold; s2, preparing a SiC composite layer on the surface of the oxide core mold; and S3, the oxide core mold is removed through a mechanical method, and the SiC cladding tube is obtained. According to the preparation method of the SiC cladding tube, the core mold is made of the oxide material, the thermal expansion coefficient of the core mold is small, the expansion of the core mold is small in the preparation process, and the internal residual stress of the prepared SiC cladding tube is small; the oxide core mold has the advantages of being good in high temperature resistance, high in melting point and the like, the deformation amount of the core mold is small in the process of preparing the SiC cladding tube, the straightness and roundness of the SiC cladding can be improved, the core mold does not react with the inner wall of the SiC composite layer at the high temperature, and the purity of the prepared SiC cladding tube is improved; the oxide core mold reduces the difficulty of the demolding process, and demolding of the full-size SiC cladding tube can be achieved.
本发明公开了一种SiC包壳管制备方法及SiC包壳管，SiC包壳管制备方法包括以下步骤：S1、提供柱状的氧化物芯模；S2、在所述氧化物芯模表面制备SiC复合层；S3、通过机械方法去除所述氧化物芯模，得到SiC包壳管。本发明的SiC包壳管制备方法，芯模选用氧化物材料制成，本身的热膨胀系数较小，制备过程中芯模膨胀较小，制备得到的SiC包壳管内部残余应力较小；氧化物芯模具有耐高温性能好、熔点高等优点，制备SiC包壳管过程中芯模变形量较小，能够改善SiC包壳的直线度和圆度，在高温下与SiC复合层内壁不发生反应，提高了制备的SiC包壳管纯度；氧化物芯模降低脱模工艺难度，可实现全尺寸SiC包壳管脱模。
SiC cladding tube preparation method and SiC cladding tube
SiC包壳管制备方法及SiC包壳管
XUE JIAXIANG (author) / WU LIXIANG (author) / LIAO YEHONG (author) / YANG RONGKUN (author) / LU ZHIWEI (author) / MA WEIGUANG (author)
2024-07-09
Patent
Electronic Resource
Chinese
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