Method for aluminizing and chromizing surface of nickel-based high-temperature alloy used on turbine blade or guider

[0022]The aluminum chrome method of this embodiment is carried out as follows:

[0023]1, the infiltration configuration, with a mass ratio, the raw material powder, the alumina powder content of 50%, the chrome powder content of 39%, the aluminum powder content of 10%, 1% ammonium chloride; and use a drum type The ball mill grinds the powder ball for 9.5 h to give a mixed bleeding.

[0024]2, pretreatment of bleging agent: calcine the ball after milling, the calcination temperature is controlled at 1100 ° C, and the holding time is controlled at 15.5 h, after the calcination is completed, the chamber is cooled. Then, in the baked bure agent, add a relative raw material total amount of aluminum powder, 1% chromium powder and 0.4% NH.4CL; then bleed at 1030 ° C for 11 h, after the air was burned, the furnace was cooled to give a sample.

[0025]3, parts pretreatment: Totally blow up the part with 200 目 砂, pressure 0.28MPa, after blowing, the blower cleans the surface residual sand, obtains th...

[0036]1, the infiltration configuration, with a mass ratio, the raw material powder, the alumina powder content of 50%, the chrome powder content of 44%, the aluminum powder content of 5%, 1% ammonium chloride content; and use roller type The ball mill grinds the powder ball for 9.5 h to give a mixed bleeding.

[0037]2, pretreatment of bleging agent: calcine the ball after milling, the calcination temperature is controlled at 1100 ° C, and the holding time is controlled at 15.5 h, after the calcination is completed, the chamber is cooled. Then, in the baked bure agent, add a relative raw material total amount of aluminum powder, 1% chromium powder and 0.4% NH.4CL; then bleed at 1030 ° C for 11 h, after the air was burned, the furnace was cooled to give a sample.

[0038]3, parts pretreatment: Totally blow up the part with 200 目 砂, pressure 0.28MPa, after blowing, the blower cleans the surface residual sand, obtains the pretreatment parts, the parts in this example are nickel groups. High...

[0048]The results of the corrosion resistance test of the experimental example 2 and the contraction example 2 are shown in Table 2.

[0049]Table 2

[0050] Example 2 Contrast 2 Corrosion potential -1.32-1.89

[0051]From the experimental results, the corrosion resistance performance of Experimental Example 2 is superior to Comparative Example 2. Further, the diffusion of the permeability layer of the contraction is uneven, and some are crackled.