rhenium

Meanwhile the super alloys which involve high use of rhenium are nickel-rhenium alloys.

Apparently rhenium is used heavily in the production of tungsten alloys, so there's an association, in that industrial pipelines involving tungsten tend to have a lot of rhenium on hand too.

Other metals would require too big additions of expensive rhenium/osmium/iridium/platinum to match the density of gold.

Although it would be incredibly costly, they might have better luck with iridium or rhenium.

Jet engines alone require significant quantities of rhenium, an element that's slightly rarer than platinum.

The only really viable class of materials at the moment are Nickel-based single-crystal superalloys that contain rare metals like Rhenium and Ruthenium.

But rhenium is extracted as a molybdenum impurity, itself an impurity in copper.

If you whack enough neutrons into it, you'll eventually get Rhenium and Osmium.

This before you account for inevitable improvements in obtaining the Rhenium itself.

Apparently GE has produced a series of super alloys named Rene alloys, and the compositions vary among each memeber of the series, some don't involve rhenium.

> The current relatively low price of rhenium (relative to its rarity) is simply due to low demand.

I think rhenium diboride seems to be a useful substitute for tungsten carbide in places where tungsten carbide is useful for its hardness.

That the first "and" isn't part of the line "And hydrogen and oxygen and nitrogen and rhenium", even though the other three are?

So I think his comment in the article will happen: “Now that we know what structural and electronic properties are needed to achieve the new transport regime discovered in this work, there is good likelihood that we will find earth-abundant alternatives to this rhenium-based material that also show impressive transport properties,” Delor says.

Rhenium does have one stable isotope, which comprises 37,4% of naturally ocurring Rhenium.

Rhenium: High performance super alloys, particularly when mixed with tungsten, mostly useful in turbine jet engines and heat exchangers.

Gold is relatively scarce, but about 3-10 times more common in the crust (by ppm on Wikipedia) than Iridium, Rhodium or Rhenium.