Mixed rare earth-magnesium metal hydride high-temperature heat storage material for solar heat collection power generation
A technology of solar heat collection and mixed rare earth, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high platform pressure, poor kinetic performance, low working temperature, etc., and achieve fast hydrogen absorption rate and activation performance Improvement and good effect of hydrogen absorption kinetics
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[0015] The purity of the raw bulk metals used to prepare the samples is all higher than 99.8%, and two alloys (Mm 1-y A y )Mg x (where A=Ti, x=12, y=0.1) and (Mm 1-m A m )Mg x (wherein A=Mn, x=12, m=0.2). The prepared alloy is crushed by mechanical pulverization, passed through a 200-mesh sieve, and the obtained 200-mesh powder is stored in a glove box.
[0016] Specimens must be conditioned prior to testing. Take by weighing several gram powders and put into reactor, vacuumize after sealing (vacuum degree is higher than 10 -2 Pa), and then filled with hydrogen at a certain pressure, and then evacuated and filled with hydrogen, repeated 2 to 3 times to clean the pipeline. Heating with a precise temperature-controlled electric furnace and strictly controlling the temperature of the reactor. When it reaches 400°C, fill it with pure hydrogen (3-6MPa) at a certain pressure. . The activation treatment of hydrogen absorption and desorption for many times stabilizes the part...
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