A protective coating material resistant to high temperature silicide corrosion and coating preparation method
A protective coating and silicide technology, applied in the field of surface engineering, can solve the problems of reducing product quality and production efficiency, reducing the service life of components, affecting the quality of glass products, etc., to slow down the corrosion rate, avoid corrosion, and combine dense effects.
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Embodiment 1
[0052] The invention provides a method for cold spraying on the outer surface of a workpiece, using In718 as the substrate (see Table 1 for the composition), the length of the workpiece is 100 mm, the width is 50 mm, and the spraying powder is Nb, Ni, mixed powder after Si ball milling, specifically comprising the following steps :
[0053] Step 1: ball milling Nb, Ni, Si elemental powders for later use, figure 1 , 2, 3 give the original powder morphology of Nb, Ni and Si used, and the ball milling process is as follows:
[0054] (1) Take 500g, 1500g, and 200g of 6mm, 10mm, and 20mm steel balls respectively, wash the ball mill jar and steel balls with a volume of 1L, and dry them in air.
[0055] (2) The elemental Nb, Ni, and Si powders are respectively 65g, 110g, and 23g into ball milling tanks according to the mass ratio of Nb accounting for 32.8%, Ni accounting for 55.6%, and Si accounting for 11.6%. Get stearic acid 4g and add ball mill jar again.
[0056] (3) The ball ...
Embodiment 2
[0077] The invention provides a method for cold spraying on the outer surface of a workpiece, using In718 as the substrate (see Table 1 for the composition), the length of the workpiece is 100 mm, the width is 50 mm, and the spraying powder is Nb, Ni, mixed powder after Si ball milling, specifically comprising the following steps :
[0078] Step 1: The Nb, Ni, Si simple substance powders are ball milled for later use, the ball milling process is as follows:
[0079] (1) Take 500g, 1500g, and 200g of 6mm, 10mm, and 20mm steel balls respectively, wash the ball mill jar and steel balls with a volume of 1L, and dry them in air.
[0080] (2) With elemental Nb, Ni, Si powder according to mass ratio, Nb accounts for 30%, Ni accounts for 50%, Si accounts for 10%, get respectively 60g, 100g, 20g and pack in the ball mill jar. Get stearic acid 4g and add ball mill jar again.
[0081] (3) The ball mill jar is sealed, and argon gas is introduced after vacuumizing. This process is repea...
Embodiment 3
[0102] The invention provides a method for cold spraying on the outer surface of a workpiece, using In718 as the substrate (see Table 1 for the composition), the length of the workpiece is 100 mm, the width is 50 mm, and the spraying powder is Nb, Ni, mixed powder after Si ball milling, specifically comprising the following steps :
[0103] Step 1: The Nb, Ni, Si simple substance powders are ball milled for later use, the ball milling process is as follows:
[0104] (1) Take 500g, 1500g, and 200g of 6mm, 10mm, and 20mm steel balls respectively, wash the ball mill jar and steel balls with a volume of 1L, and dry them in air.
[0105] (2) With elemental Nb, Ni, Si powder according to mass ratio, Nb accounts for 25%, Ni accounts for 50%, Si accounts for 25%, get 50g, 100g, 50g respectively and pack in the ball mill jar. Get stearic acid 4g and add ball mill jar again.
[0106] (3) The ball mill jar is sealed, and argon gas is introduced after vacuumizing. This process is repea...
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Abstract
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