Description
长征五号B型运载火箭是我国目前近地轨道推力最大的运载火箭，氢泵叶轮是火箭液氢液氧发动机的核心关键部件，研发难度极大，不仅因为它的工作环境苛刻，还因为它的铸造强度比较低。使用粉末冶金成形的工艺方法，更加节省材料，可以承担较高的转速，并且更为可靠。什么是粉末冶金成形？粉末叶轮怎么做？他们如何助力长征五号首飞？“格致论道”是中国科学院全力推出、中国科普博览承办的科学讲坛，致力于精英思想的跨界传播。登录官方网站（self.org.cn）、微信公众号“SELFtalks”获取更多信息。
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