为扩展非晶合金的应用范围,采用活性燃烧高速燃气喷涂技术制备Fe Cr Mo CB非晶涂层,通过X射线衍射仪、激光粒度分析仪、扫描电子显微镜等技术对合金粉末以及获得的Fe基涂层的形貌和显微组织结构进行研究。结果表明:采用合适的喷涂工艺...为扩展非晶合金的应用范围,采用活性燃烧高速燃气喷涂技术制备Fe Cr Mo CB非晶涂层,通过X射线衍射仪、激光粒度分析仪、扫描电子显微镜等技术对合金粉末以及获得的Fe基涂层的形貌和显微组织结构进行研究。结果表明:采用合适的喷涂工艺可以获得非晶态的Fe基合金涂层,该涂层具有比基体304不锈钢更为优异的耐腐蚀性;与基体材料相比,涂层具有较高的硬度和良好的耐磨性,涂层磨损以磨粒磨损和疲劳磨损相结合。该结果为非晶合金在涂层方面的应用提供了实验和理论支持。展开更多
The amorphous boron powders with high activity were prepared by the high-energy ball milling-combustion synthesis method. The effects of the milling rate and milling time on the crystallinity, microscopic morphology a...The amorphous boron powders with high activity were prepared by the high-energy ball milling-combustion synthesis method. The effects of the milling rate and milling time on the crystallinity, microscopic morphology and reactivity of amorphous boron powder were studied. The results show that the crystallinity of amorphous nano-boron powder is only 22.5%, and its purity reaches 92.86%. The high-energy ball milling can significantly refine boron powder particle sizes, whose average particle sizes are smaller than 50 nm, and specific surface areas are of up to 70.03 m2/g. When the transmission electron beam irradiates the samples, they rapidly melt. It can be seen that the monomer amorphous boron size is less than 30 nm from the specimen melting traces, which indicates that the samples have high reactivity.展开更多
文摘为扩展非晶合金的应用范围,采用活性燃烧高速燃气喷涂技术制备Fe Cr Mo CB非晶涂层,通过X射线衍射仪、激光粒度分析仪、扫描电子显微镜等技术对合金粉末以及获得的Fe基涂层的形貌和显微组织结构进行研究。结果表明:采用合适的喷涂工艺可以获得非晶态的Fe基合金涂层,该涂层具有比基体304不锈钢更为优异的耐腐蚀性;与基体材料相比,涂层具有较高的硬度和良好的耐磨性,涂层磨损以磨粒磨损和疲劳磨损相结合。该结果为非晶合金在涂层方面的应用提供了实验和理论支持。
基金Project(51002025)supported by the National Natural Science Foundation of China
文摘The amorphous boron powders with high activity were prepared by the high-energy ball milling-combustion synthesis method. The effects of the milling rate and milling time on the crystallinity, microscopic morphology and reactivity of amorphous boron powder were studied. The results show that the crystallinity of amorphous nano-boron powder is only 22.5%, and its purity reaches 92.86%. The high-energy ball milling can significantly refine boron powder particle sizes, whose average particle sizes are smaller than 50 nm, and specific surface areas are of up to 70.03 m2/g. When the transmission electron beam irradiates the samples, they rapidly melt. It can be seen that the monomer amorphous boron size is less than 30 nm from the specimen melting traces, which indicates that the samples have high reactivity.
