Amorphous alloy coating prepared by plasma spraying technology and preparation method thereof
An amorphous alloy and plasma technology, applied in pressure inorganic powder coating and other directions, can solve the problems of limiting the wide application of amorphous alloy coatings, difficulty in preparing amorphous alloy powders, and high cost of amorphous alloy coatings. Effects of high content of amorphous phase, excellent wear resistance and corrosion resistance, excellent wear resistance and corrosion resistance
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[0028] The preparation method of the present invention comprises the following steps:
[0029] 1) Select iron-based polycrystalline alloy powder (Cr(14~18at.%), Mo(14~18at.%), C(5~15at.%), B(5~15
[0030] at.%), P(0~10at.%), Fe(40~50at.%)) as raw materials, and the particle size of the powder is required to be 1~96μm;
[0031] 2) The surface of the substrate has been treated by degreasing-rusting-sandblasting-ultrasonic cleaning-drying;
[0032] 3) Using the atmospheric plasma spraying process, the powder is sprayed onto the surface of the treated substrate;
[0033] The specific process parameters for the preparation of the amorphous alloy coating are shown in Table 1.
[0034] Table 1 Spraying parameters of amorphous alloy coating
[0035]
[0036] *slpm: standard liters / minute gpm: grams / minute.
[0037] In the step (1), the powder needs to be dried before spraying, and the condition is to dry at 100-120° C. for 1-2 hours, and set aside.
[0038] In the step (2), th...
Embodiment 1
[0048] Select Fe with a particle size of 1-48 μm 43 Cr 16 Mo 16 C 10 B 5 P 10 (at.%) (brand SAM6) polycrystalline alloy powder is the raw material for spraying, and the powder appearance is as follows figure 1 shown. Depend on figure 1 It can be seen that most of the powder is spherical or nearly spherical, with smooth surface and good fluidity. The powder was dried at 110°C for 1 hour, and cooled for later use.
[0049] The base material is 316L stainless steel, which is processed into a 40mm×20mm×2mm stainless steel sheet and a Φ60mm×8mm×7mm stainless steel disc, which are used for friction and wear experiments. After sandblasting the surface of the stainless steel, ultrasonically clean it once in absolute ethanol solution for 3 minutes, then dry it at 100°C for 1 hour, and cool it for later use; the pressure of sandblasting is 0.3MPa.
[0050] The powder is sprayed onto the treated 316L stainless steel surface by atmospheric plasma spraying process. The conditions...
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