Method for preparing chemical vapor deposition carbon modified flaky FeSiAl alloy
A chemical vapor deposition, sheet-like technology, applied in the direction of gaseous chemical plating, metal material coating process, coating, etc., can solve the problems of loss of absorbing performance, aging, corrosion, etc., to achieve excellent absorbing performance and corrosion resistance The effect of performance, mild preparation process conditions and good commercial value
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Embodiment 1
[0026] A preparation method of chemical vapor deposition carbon modified flake FeSiAl alloy, comprising the following steps:
[0027] Step 1. Put 10g of flaky FeSiAl particles in a CVD furnace, raise the temperature in the furnace to 550°C at a rate of 10°C / min under an argon atmosphere, and keep it at 550°C for 2 hours for annealing. After completion, Cool naturally to room temperature, take out the product, and obtain flake FeSiAl particles after annealing treatment, wherein the flow rate of argon gas is 50mL / min; annealing can change the crystal structure and improve the performance of the sample;
[0028] Step 2. Place 5 g of the annealed FeSiAl particles obtained in Step 1 in a CVD rotary furnace, and raise the temperature in the furnace to 300° C. at a rate of 10° C. / min under an argon atmosphere; then, keep the argon While the gas is continuously fed, acetylene gas with a flow rate of 50mL / min is fed into the furnace as a reaction gas, and the reaction is carried out fo...
Embodiment 2
[0030] Compared with Example 1, this example differs in that: in step 2, the temperature in the furnace is raised to 400° C. at a heating rate of 10° C. / min; other steps are the same as in Example 1. The obtained carbon-modified flake FeSiAl alloy material is named FeSiAl@C-400℃.
Embodiment 3
[0032] Compared with Example 1, this example differs in that: in step 2, the temperature in the furnace is raised to 500° C. at a heating rate of 10° C. / min; other steps are the same as in Example 1. The obtained carbon-modified flake FeSiAl alloy material is named FeSiAl@C-500℃.
[0033] figure 1 It is the SEM figure before and after carbon modification of the sheet-like FeSiAl alloy surface of the present invention; Wherein, (a) is the sheet-like FeSiAl alloy before carbon modification, (b) is embodiment 1, (c) is embodiment 2, (d) is Example 3. Depend on figure 1 It can be seen that the carbon modified on the surface of the flake FeSiAl alloy has no obvious change in particle size, and the modified carbon is less; figure 1 (d) The existence of carbon nanotubes can be seen, indicating that there are more carbon modifications at 500 °C, and a small amount of carbon nanotubes are formed.
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