原文在哪啊？如果仅从耐热性能考虑，说氧化铝可能更靠谱点。

编辑补充：
找到一处原文：https://www.space.com/nasa-3d-printed-rocket-nozzle-ramfire-video
对用铝是这么说的：
In the past, aluminum has been avoided in spaceflight manufacturing due to its susceptibility to heat and cracking during welding. Additive manufacturing, or 3D printing, gets around these issues by eliminating the need for welding and including small channels inside the metal that allow it to cool, preventing it from melting.

大概就是说无焊接，内有流道，再生冷却吧。
这个文章没提到，应该内壁还有气膜冷却吧，不然估计也扛不住。

【 在 woolgather 的大作中提到: 】
: 铝的？
: 8.41 P@K.Wz YMJ:/ 04/02  复制打开抖音，看看近日，NASA宣布3D打印火箭发动机喷嘴通过考验，... https://v.douyin.com/idbPftbC/
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修改:MidNiter FROM 221.216.144.*
FROM 221.216.144.*