Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-size silicon nitride ceramic ball for wind power generation and preparation method and application thereof
The invention provides a large-size silicon nitride ceramic ball for wind power generation and a preparation method and application thereof, and relates to the technical field of wind power generation. The silicon nitride ceramic ball is prepared by adopting hot pressing sintering, and the hot pressing sintering method has a mechanical pressurization effect at a high temperature, and can improve the sintering driving force and promote densification, so that the content of the required sintering aid is low, few oxynitride liquid phases are formed by reaction of the sintering aid and particle surface substances during sintering, few glass phase is left between grain boundaries after sintering, and thefatigue life of the silicon nitride ceramic ball is improved; the silicon nitride ceramic ball material prepared by adopting a hot pressing sintering mode is less in grain boundary phase and glass phase, the purity of the silicon nitride ceramic ball is high, the fatigue life of the wind power generation bearing can be effectively prolonged, and the reliability of the wind power generation bearing can be effectively improved; and the prepared silicon nitride ceramic ball is uniform in density, high in hardness, strong in fracture toughness, capable of avoiding the problems of deformation, cracking and the like, good in batch stability, simple and efficient in production process and low in cost.
本发明提供了一种风力发电用大尺寸氮化硅陶瓷球及其制备方法和应用，涉及风力发电技术领域。本发明采用热压烧结制备氮化硅陶瓷球，热压烧结方法在高温下有机械加压的作用，能够提高烧结驱动力，促进致密化，因而所需烧结助剂含量低，烧结时烧结助剂与颗粒表层物质反应形成的氧氮化物液相少，烧结后在晶界间留下的玻璃相少，有助于提高氮化硅陶瓷球的疲劳寿命，本发明采用热压烧结方式制备氮化硅陶瓷球材料晶界相、玻璃相少，氮化硅陶瓷球纯度高，能够有效提高风力发电轴承的疲劳寿命及可靠性；且所制备的氮化硅陶瓷球密度均匀，且硬度高、断裂韧性强，能够避免变形、开裂等问题，且批次稳定性好，生成工艺简单高效，成本低。
Large-size silicon nitride ceramic ball for wind power generation and preparation method and application thereof
The invention provides a large-size silicon nitride ceramic ball for wind power generation and a preparation method and application thereof, and relates to the technical field of wind power generation. The silicon nitride ceramic ball is prepared by adopting hot pressing sintering, and the hot pressing sintering method has a mechanical pressurization effect at a high temperature, and can improve the sintering driving force and promote densification, so that the content of the required sintering aid is low, few oxynitride liquid phases are formed by reaction of the sintering aid and particle surface substances during sintering, few glass phase is left between grain boundaries after sintering, and thefatigue life of the silicon nitride ceramic ball is improved; the silicon nitride ceramic ball material prepared by adopting a hot pressing sintering mode is less in grain boundary phase and glass phase, the purity of the silicon nitride ceramic ball is high, the fatigue life of the wind power generation bearing can be effectively prolonged, and the reliability of the wind power generation bearing can be effectively improved; and the prepared silicon nitride ceramic ball is uniform in density, high in hardness, strong in fracture toughness, capable of avoiding the problems of deformation, cracking and the like, good in batch stability, simple and efficient in production process and low in cost.
本发明提供了一种风力发电用大尺寸氮化硅陶瓷球及其制备方法和应用，涉及风力发电技术领域。本发明采用热压烧结制备氮化硅陶瓷球，热压烧结方法在高温下有机械加压的作用，能够提高烧结驱动力，促进致密化，因而所需烧结助剂含量低，烧结时烧结助剂与颗粒表层物质反应形成的氧氮化物液相少，烧结后在晶界间留下的玻璃相少，有助于提高氮化硅陶瓷球的疲劳寿命，本发明采用热压烧结方式制备氮化硅陶瓷球材料晶界相、玻璃相少，氮化硅陶瓷球纯度高，能够有效提高风力发电轴承的疲劳寿命及可靠性；且所制备的氮化硅陶瓷球密度均匀，且硬度高、断裂韧性强，能够避免变形、开裂等问题，且批次稳定性好，生成工艺简单高效，成本低。
Large-size silicon nitride ceramic ball for wind power generation and preparation method and application thereof
一种风力发电用大尺寸氮化硅陶瓷球及其制备方法和应用
SONG LINSHENG (Autor:in) / ZHANG JINZHONG (Autor:in)
30.07.2021
Patent
Elektronische Ressource
Chinesisch
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