Manufacturing method of crucible for producing niobium oxide or tantalum oxide
A manufacturing method and tantalum oxide technology, applied in the field of crucible manufacturing, can solve the problems of increasing the production cost of high-purity niobium oxide or high-purity tantalum oxide, and achieve the effects of low production cost, avoiding secondary pollution, and being difficult to fall off
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[0023] (2) Preparation of crucible coating slurry
[0024] Mix 200~400ml of glycerin and 800~1000ml of deionized water evenly, heat to 50~70℃, add 50~100g of bone glue, after the bone glue dissolves, add 200~500g of high-purity niobium oxide or high-purity tantalum oxide that passed through a 150-mesh sieve, Stir evenly to obtain the crucible coating slurry;
[0025] Among them, the viscosity of the slurry satisfies: 100ml of the slurry passes through a funnel with a diameter of 6mm, and the time for all the slurry to flow out is 4~8s.
[0026] (3) Coating
[0027] Apply the crucible coating slurry obtained in step (2) evenly on the inner surface of the crucible body obtained in step (1), and let it dry naturally, and the coating thickness is determined according to requirements;
[0028] (4) Sintering and shaping
[0029] The crucible body coated with the crucible coating is sintered at high temperature. The sintering temperature of the crucible for the production of high-...
Embodiment 1
[0035] Embodiment one: the manufacture of crucible for niobium oxide production
[0036] A method for manufacturing a crucible for high-purity niobium oxide production, comprising the following steps:
[0037] (1) Production of alumina crucible body
[0038] Choose 95% pure alumina as the material of the crucible, make the embryo body according to the shape of the crucible, and dry it at room temperature;
[0039] (2) Preparation of crucible coating slurry
[0040] Mix 200ml of glycerin and 800ml of deionized water evenly, heat to 50°C, add 50g of bone glue, after the bone glue dissolves, add 200g of high-purity niobium oxide that has passed through a 150-mesh sieve, and stir evenly to obtain a crucible coating slurry;
[0041] Use a funnel with a diameter of 6mm to check the viscosity of the prepared slurry, and the time for all the 100ml slurry to flow out is 4s;
[0042] (3) Coating
[0043] Apply the crucible coating slurry obtained in step (2) evenly on the inner surf...
Embodiment 2
[0047] Embodiment two: the manufacture of crucible for niobium oxide production
[0048] A method for manufacturing a crucible for high-purity niobium oxide production, comprising the following steps:
[0049] (1) Production of alumina crucible body
[0050] Choose 95% pure alumina as the material of the crucible, make the embryo body according to the shape of the crucible, and dry it at room temperature;
[0051] (2) Preparation of crucible coating slurry
[0052] Stir 250ml of glycerin and 850ml of deionized water evenly, heat to 60°C, add 70g of bone glue, after the bone glue is dissolved, add 300g of high-purity niobium oxide that has passed through a 150-mesh sieve, and stir evenly to obtain a crucible coating slurry;
[0053] Use a funnel with a diameter of 6mm to check the viscosity of the prepared slurry, and the time for all the 100ml slurry to flow out is 6s;
[0054] (3) Coating
[0055]Apply the crucible coating slurry obtained in step (2) evenly on the inner s...
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