NiAl alloy honeycomb structure and preparation method thereof
A honeycomb structure and alloy technology, which is applied in the field of NiAl alloy honeycomb structure and its preparation, can solve the problems of low connection strength and long production cycle of corrugated boards, and achieve the effects of stable overall performance, short preparation cycle and high connection strength
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[0034] to combine figure 1 As shown, the embodiment of the present invention provides a method for preparing a NiAl alloy honeycomb structure, comprising the following steps:
[0035] Step S1: alternately stack the surface-treated Ni foil 1 and Al foil 2 to form a foil slab 7, the outer layer of the foil slab 7 is Ni foil 1; it should be noted that the outer layer of the foil slab 7 Layers refer to the topmost and bottommost layers stacked from top to bottom.
[0036] Step S2: Under the condition of temperature of 700-800°C and pressure of 10-20MPa, hot-press forming the foil slab 7 to obtain corrugated board 13;
[0037] Step S3: After alternately stacking the corrugated boards 13 and the Al foils 2, connect them at a temperature of 700-800° C. and a pressure of 10-20 MPa to obtain a honeycomb structure;
[0038] Step S4: heat and homogenize the honeycomb structure in step S3, and obtain a NiAl alloy honeycomb structure after cooling.
[0039] The method for preparing the ...
Embodiment 1
[0059] The preparation method of the NiAl alloy honeycomb structure in the embodiment of the present invention comprises the following steps:
[0060] The Ni foil 1 and Al foil 2 with a thickness ratio of 1:1.5 were polished with fine sandpaper, placed in an acetone solution for ultrasonication, washed with distilled water, dried, and stacked alternately to form 5 layers of foil slabs 7, the uppermost layer and The bottom layer is Ni foil 1; after heating the hot-pressing mold to 780°C, place the foil slab 7 in the hot-pressing mold, pressurize to 18MPa, and hold the heat for 14 minutes to obtain the corrugated board 13; Heat the mold to 780°C, alternately stack the corrugated board 13 and the Al foil 2 with a thickness of 20 μm, put it into the connection mold, pressurize the joint to be 19MPa, keep the heat for 14 minutes, and obtain the honeycomb structure; place the honeycomb structure in In a vacuum heating furnace, after heating to 1200°C, hold the temperature for 1.8h, ...
Embodiment 2
[0062] The preparation method of the NiAl alloy honeycomb structure in the embodiment of the present invention comprises the following steps:
[0063] After the Ni foil 1 and Al foil 2 are polished with fine sandpaper, they are placed in an acetone solution for ultrasonication, washed with distilled water, dried, and then stacked alternately to form 7 layers of foil slabs 7, the top and bottom layers are Ni foil 1 ; After heating the hot-pressing mold to 800°C, place the foil slab 7 in the hot-pressing mold, pressurize to 20MPa, keep the heat for 15 minutes, and obtain the corrugated board 13; heat the connecting mold to 800°C, and put After the corrugated board 13 and the Al foil 2 with a thickness of 30 μm are stacked alternately, they are put into the connection mold, and the joint is pressurized to 20 MPa, and after heat preservation and pressure holding for 15 minutes, the honeycomb structure is obtained; the honeycomb structure is placed in a vacuum heating furnace and he...
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Abstract
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