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Regeneratively produced hydrogen is an ideal energy carrier, which will be used in future applications as fuel cells and in cars; it will supplement natural gas as an energy source. But atomic hydrogen often induces brittle behavior in metals at high temperatures. Lukas Gröner of the Fraunhofer IWM, MikroTribologie Centrum µTC, has now developed a robust coating that effectively protects steel from the penetration of hydrogen. The barrier effect of this so-called MAX-phase layer is 3500 times greater than that of untreated steel. He published his results in the journal materials (doi: 10.3390/ma13092085).more info