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A rare earth-titanium iron hydrogen storage alloy for wind power energy storage

A hydrogen storage alloy and rare earth technology, which is applied in the field of rare earth-titanium iron hydrogen storage alloys for wind power energy storage, can solve the problems of reduced activation times of the alloy, harsh activation conditions, and large wind power generation, so as to reduce raw material costs and solve difficult problems. Activation, the effect of reducing volatilization loss

Active Publication Date: 2017-03-22
CENT IRON & STEEL RES INST
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Problems solved by technology

Third, wind power has the characteristics of anti-peak regulation, that is, when the electricity load is at a low point at night, the wind power generation capacity is relatively large. The phenomenon
The research found that by adding Al, Cr, Mn, Cu, Zr, Mg, S, V, Ni and other elements, the number of activation of the alloy is greatly reduced, only 1-3 times, but the activation conditions are still relatively harsh, requiring a high temperature of 300 °C

Method used

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  • A rare earth-titanium iron hydrogen storage alloy for wind power energy storage
  • A rare earth-titanium iron hydrogen storage alloy for wind power energy storage
  • A rare earth-titanium iron hydrogen storage alloy for wind power energy storage

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preparation example Construction

[0048] The preparation method of the rare earth-titanium iron hydrogen storage alloy for wind power energy storage of the present invention comprises the following steps:

[0049] A. Proportion: Composition of Ti according to chemical formula 1.1-x Fe 0.8 mn 0.2 m x +yLaNi 5 Carry out weighing and proportioning, wherein, x is the atomic ratio, 0<x≤0.09, y is the mass percentage, 2%≤y≤8%, M represents multi-element rare earth, except La containing atomic ratio of 0.5-0.7 , also contains at least one of Ce, Pr, Y, Nd, Gd; the metal purity of Ti, Fe, Mn ≥ 99.5%, due to the high melting point of Ti, Fe, Mn, respectively 1675, 1535, 1244 ℃, and Most of the rare earth elements have low melting points. The melting points of La, Ce, Y, Nd, Pr, and Gd are 921, 799, 931, 1021, 1522, and 1313°C respectively. The rare earth elements added during the smelting process are volatile. Therefore, the chemical formula consists of Rare earth in the ratio increases the burning loss of 5-10wt%...

Embodiment 1

[0057] Example 1 Ti 1.055 Fe 0.8 mn 0.2 La 0.03 Ce 0.015 +5%LaNi 5

Embodiment 2

[0058] Example 2 Ti 1.055 Fe 0.8 mn 0.2 La 0.03 Ce 0.015 +5%LaNi 5

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Abstract

The invention belongs to the technical field of hydrogen storage alloys, and relates to a rear earth-ferrotitanium hydrogen storage alloy for wind power storage and a preparation method thereof. The rear earth-ferrotitanium hydrogen storage alloy consists of Ti, Fe, Mn, multi-component rear earth and few LaNi5 alloy, and has a chemical formula as follows: Ti1.1-xFe0.8Mn0.2Mx+yLaNi5, wherein x is an atomic ratio greater than 0 and less than or equal to 0.09, y is mass percent greater than or equal to 2% and less than or equal to 8%, and M is multi-component rear earth which further contains at least one of Ce, Y, Nd, Pr and Gd in addition to La with the atomic ratio of 0.5-0.7. The alloy is prepared by the following steps: proportioning, carrying out vacuum smelting, carrying out rapid quenching, carrying out mechanical crushing and carrying out ball-milling. The rear earth-ferrotitanium hydrogen storage alloy mainly adopts Ti and Fe elements which are rich in the natural world and cheap, so that large-scale popularization and application are facilitated. Compared with a smelting and annealing process, the alloy with high-density nanocrystalline grains is prepared through the rapid quenching process; and by virtue of mechanical ball-milling, the alloy forms high-density crystal defects. The rapid quenching process and the ball-milling process are simple and easy to grasp, so that the preparation method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage alloys, and relates to a rare earth-iron-titanium hydrogen storage alloy for wind power energy storage. Background technique [0002] As a clean renewable energy, wind energy has become the fastest-growing way of power generation in the world, and it is developing in the direction of large-scale, large-capacity, and industrialization. At present, there are three deficiencies in wind power generation. First, wind power has severe fluctuations in voltage, frequency and phase. In order to maintain the stability of the grid, the power company limits the amount of wind power connected to the grid to no more than 10% of the grid capacity. Second, my country's wind power generation areas are far away from the load center, requiring large-scale long-distance transmission lines. Third, wind power has the characteristics of anti-peak regulation, that is, when the electricity load is at a low poin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/03
Inventor 张羊换尚宏伟李龙文赵栋梁祁焱郭世海
Owner CENT IRON & STEEL RES INST
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