Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Repeatable wide-temperature-range self-lubricating composite ceramic and preparation method thereof
The invention discloses a self-lubricating composite ceramic capable of continuously lubricating in a wide temperature range and being repeatedly used. Wherein the ZrO2 is used as a matrix, the SrSO4 is used as a lubricating phase, the SrSO4 is distributed in the ZrO2 matrix in a granular manner, and a core-shell structure of ZrO2 coated SrSO4 particles is formed after sintering; according to the structural design, the problem that materials are difficult to sinter or follow-up cracking is caused due to large residual stress caused by poor two-phase thermal matching can be solved; and meanwhile, effective lubricating performance is realized by combining the soft property of SrSO4 and the surface texture property formed by the distribution form of the SrSO4. According to the wide-temperature-range continuous-lubricating and reusable self-lubricating composite ceramic material disclosed by the invention, components with low melting points or low decomposition temperatures are not involved in each phase, so that the phase composition is not influenced by the temperature after high-temperature service, and the material still has excellent lubricating performance at the room temperature to 1000 DEG C when being repeatedly used.
本发明公开一种宽温域连续润滑且可重复使用的自润滑复合陶瓷。其中，ZrO2为基体，SrSO4为润滑相，SrSO4呈现颗粒状分布于ZrO2基体中，烧结后形成ZrO2包覆SrSO4颗粒的核壳结构；这种结构设计可以避免因两相热匹配差引发较大的残余应力，进而使得材料难以烧结或造成后续的开裂问题；同时利用SrSO4质软的特性和其分布形式所形成的表面织构特性相结合实现有效的润滑性能。由于本发明涉及的宽温域连续润滑且可重复使用的自润滑复合陶瓷材料各物相中，不涉及低熔点或低分解温度的组分，因此经过高温服役后物相组成不受温度的影响，重复使用时室温～1000℃下依然具有优异的润滑性能。
Repeatable wide-temperature-range self-lubricating composite ceramic and preparation method thereof
The invention discloses a self-lubricating composite ceramic capable of continuously lubricating in a wide temperature range and being repeatedly used. Wherein the ZrO2 is used as a matrix, the SrSO4 is used as a lubricating phase, the SrSO4 is distributed in the ZrO2 matrix in a granular manner, and a core-shell structure of ZrO2 coated SrSO4 particles is formed after sintering; according to the structural design, the problem that materials are difficult to sinter or follow-up cracking is caused due to large residual stress caused by poor two-phase thermal matching can be solved; and meanwhile, effective lubricating performance is realized by combining the soft property of SrSO4 and the surface texture property formed by the distribution form of the SrSO4. According to the wide-temperature-range continuous-lubricating and reusable self-lubricating composite ceramic material disclosed by the invention, components with low melting points or low decomposition temperatures are not involved in each phase, so that the phase composition is not influenced by the temperature after high-temperature service, and the material still has excellent lubricating performance at the room temperature to 1000 DEG C when being repeatedly used.
本发明公开一种宽温域连续润滑且可重复使用的自润滑复合陶瓷。其中，ZrO2为基体，SrSO4为润滑相，SrSO4呈现颗粒状分布于ZrO2基体中，烧结后形成ZrO2包覆SrSO4颗粒的核壳结构；这种结构设计可以避免因两相热匹配差引发较大的残余应力，进而使得材料难以烧结或造成后续的开裂问题；同时利用SrSO4质软的特性和其分布形式所形成的表面织构特性相结合实现有效的润滑性能。由于本发明涉及的宽温域连续润滑且可重复使用的自润滑复合陶瓷材料各物相中，不涉及低熔点或低分解温度的组分，因此经过高温服役后物相组成不受温度的影响，重复使用时室温～1000℃下依然具有优异的润滑性能。
Repeatable wide-temperature-range self-lubricating composite ceramic and preparation method thereof
一种可重复使役宽温域自润滑复合陶瓷及其制备方法
SU YUNFENG (Autor:in) / WEI WANXIN (Autor:in) / WU JINGWEI (Autor:in) / FAN HENGZHONG (Autor:in) / ZHANG YONGSHENG (Autor:in) / SONG JUNJIE (Autor:in) / HU LITIAN (Autor:in)
06.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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