Tungsten lets iron keep 93% of hydrogen capacity, not 11%
Researchers report an iron-tungsten powder that kept 93% of its hydrogen storage capacity over 30 cycles, against 11% for plain iron cycled the same way.
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Superhard carbon coating pushed to 100 micrometers, five times the previous best
Researchers report having made a ta-C coating more than 100 micrometers (µm) thick. Ta-C is the hardest grade of diamond-like carbon.
Cold-rolling makes cheap steel as strong as door-beam steel
University of Science and Technology Beijing researchers report they made a cheap, low-carbon steel about as strong as the hot-stamped steel used in car door beams, by cold-rolling it – rolling it at room temperature.