More concerning than jet engines might be the high efficiency natural gas turbines for generating electricity. However, it looks like Ruthenium is even better than Rhenium for these applications. And in general, you can avoid rare earth metals and just accept slightly lower performance for combustion turbines, wind turbines, electric car motors, LED lights, solar cells, etc.
More concerning than jet engines might be the high efficiency natural gas turbines for generating electricity. However, it looks like Ruthenium is even better than Rhenium for these applications. And in general, you can avoid rare earth metals and just accept slightly lower performance for combustion turbines, wind turbines, electric car motors, LED lights, solar cells, etc.