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中国发现超级金属“铼” 比钻石还难获取的天然元素

2017-09-04 08:26:36   中国日报

长期以来航空发动机一直都是我国航空工业中的一个短板。现在,我国部分军用飞机依然使用国外发动机,而在商业航空领域,C-919大型喷气式客机使用的发动机也产自一家美法合资企业。

为了尽快补足这块短板,国家一直在加大航空发动机的研发力度。如今,航空工业持续发力,正不断缩小着与国际一流发动机的差距。

航空发动机是当今世界上最复杂的、多学科集成的工程机械系统之一,核心部件就是单晶叶片。看似单薄的零件迸发出惊人的动力,每一片叶片输出的马力都相当于一台2.0排量的SUV汽车。生产单晶叶片,离不开一种珍贵的稀有金属-铼。在成都航宇超合金技术有限公司,我们见到了单晶叶片生产中最为关键的金属——铼。

航空发动机每秒散热1700多度,唯有“铼”金属不被熔化

在河北廊坊科技园,一款为无人机和商务机而设计的航空发动机正在进行150小时试车,考核发动机在各种状态下技术性能和可靠性及寿命等综合指标。

中国科学院工程热物理所所长朱俊强:150小时做完了,首飞保证就没问题了,可以到不同高度进行试飞了,这个发动机基本定型。

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