A kind of anti-ablation and anti-corrosion protective coating on the surface of molybdenum metal core and its preparation method
A protective coating, molybdenum metal technology, applied in metal material coating process, metal processing equipment, coating and other directions, can solve the problem of poor plasticity, prone to warpage, leaking core, eccentric core and broken core, light density, etc. problem, to achieve the effect of low cost, avoid peeling off, good anti-corrosion ability
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Embodiment 1
[0035] A method for preparing a protective coating on the surface of a molybdenum metal core, the substrate is pure molybdenum, comprising the following steps:
[0036] Step 1: Pretreatment of molybdenum metal core substrate:
[0037] (1) Grind the molybdenum metal substrate step by step with 240#, 400#, 600#, 800# sandpaper.
[0038] (2) The polished substrate was ultrasonically cleaned with absolute ethanol for 10 minutes, and then dried.
[0039] Step 2: Prepare embedding seepage material:
[0040] Prepare the embedding material, each 100g of the embedding material includes 2g of Al powder with a particle size of 500 mesh and a purity of not less than 99.9%, and 2g of NH with a particle size of 100 mesh and a purity of not less than 99.5% 4 Cl powder and the remaining Al with a particle size of 300 mesh and a purity of not less than 99.85% 2 o 3 pink.
[0041] Step 3: Embedding aluminizing:
[0042] (1) Fill the bottom of the crucible with the embedding material obtai...
Embodiment 2
[0051] A method for preparing a protective coating on the surface of a molybdenum metal core, the substrate is pure molybdenum, comprising the following steps:
[0052] Step 1: Pretreatment of molybdenum metal core substrate:
[0053] (1) Grind the molybdenum metal substrate step by step with 240#, 400#, 600#, 800# sandpaper.
[0054] (2) The polished substrate was ultrasonically cleaned with absolute ethanol for 10 minutes, and then dried.
[0055] Step 2: Prepare embedding seepage material:
[0056] Prepare the embedding material, each 100g of the embedding material includes 4g of Al powder with a particle size of 500 mesh and a purity of not less than 99.9%, 2g of NH with a particle size of 100 mesh and a purity of not less than 99.5% 4 Cl powder and the remaining Al with a particle size of 300 mesh and a purity of not less than 99.85% 2 o 3 pink.
[0057] Step 3: Embedding aluminizing:
[0058] (1) Fill the bottom of the crucible with the embedding material obtained ...
Embodiment 3
[0067] A method for preparing a protective coating on the surface of a molybdenum metal core, the substrate is pure molybdenum, comprising the following steps:
[0068] Step 1: Pretreatment of molybdenum metal core substrate:
[0069] (1) Grind the molybdenum metal substrate step by step with 240#, 400#, 600#, 800# sandpaper.
[0070] (2) The polished substrate was ultrasonically cleaned with absolute ethanol for 10 minutes, and then dried.
[0071] Step 2: Prepare embedding seepage material:
[0072] Prepare the embedding material, each 100g of the embedding material includes 1g of Al powder with a particle size of 500 mesh and a purity of not less than 99.9%, and 1g of NH with a particle size of 100 mesh and a purity of not less than 99.5% 4 Cl powder and the remaining Al with a particle size of 300 mesh and a purity of not less than 99.85% 2 o 3 pink.
[0073] Step 3: Embedding aluminizing:
[0074] (1) Fill the bottom of the crucible with the embedding material obtai...
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