Materials comprising barium zirconate and methods for manufacturing thereof
View Patent ↗A method for manufacturing barium zirconate particles includes providing a mixture of materials that includes barium, zirconium and a sintering aid, wherein the sintering aid includes at least one of barium tungstate, potassium niobate, tungsten oxide, barium molybdate, molybdenum oxide, potassium tantalate, potassium oxide, sodium niobate, sodium tantalate, sodium oxide, lithium niobate, lithium tantalate, lithium oxide, copper oxide, manganese oxide, zinc oxide, calcium zirconate and strontium zirconate; and heating the mixture of materials to produce barium zirconate particles that include the sintering aid.
1. A method comprising:
providing a mixture of materials that includes barium, zirconium and a sintering aid, wherein the sintering aid includes at least one of barium tungstate, potassium niobate, tungsten oxide, barium molybdate, molybdenum oxide, potassium tantalate, potassium oxide, sodium niobate, sodium tantalate, sodium oxide, lithium niobate, lithium tantalate, lithium oxide, copper oxide, manganese oxide, zinc oxide, calcium zirconate and strontium zirconate; and
heating the mixture of materials to produce barium zirconate particles that include the sintering aid.
2. The method of claim 1 , wherein the barium and the zirconium are provided in the form of barium zirconate.
3. The method of claim 1 , wherein the barium is provided in the form of barium carbonate and the zirconium is in the form of zirconium oxide.
4. The method of claim 1 , wherein the barium zirconate particles include particles having sizes between about 1 μm to 4 μm.
5. The method of claim 1 , wherein the mixture of materials is heated at a temperature between about 1500° C. and about 1600° C.
6. The method of claim 1 , wherein the mixture of materials further includes at least one of water and alcohol.
7. The method of claim 1 , further comprising drying the mixture of materials prior to the heating.
8. The method of claim 7 , wherein drying the mixture of materials comprises spraying the mixture of materials into a heated chamber.
9. The method of claim 1 , wherein the barium zirconate particles each comprise a perovskite crystal structure.
10. The method of claim 1 , further comprising:
mixing the barium zirconate particles with a binder material; and
heating the barium zirconate particles and the binder material to produce a barium zirconate agglomerate that includes barium zirconate and the binder material.
11. The method of claim 10 , wherein the binder material includes at least one of polyvinyl alcohol and polyethylene glycol.
12. The method of claim 10 , further comprising sorting the barium zirconate agglomerate to extract an agglomerate having a size in a predetermined range of sizes.
13. The method of claim 12 , wherein the predetermined range of sizes is one of a range between about 10 μm to 20 μm and a range between about 40 μm to 100 μm.
14. The method of claim 10 , further comprising mixing the barium zirconate particles and binder material with a solvent prior to heating the barium zirconate particles and binder material.
15. The method of claim 14 , further comprising crushing the barium zirconate particles and the binder material prior to heating the barium zirconate particles and binder material.
16. The method of claim 14 , further comprising drying the barium zirconate particles and binder material by spraying the barium zirconate particles and binder material into a heated chamber prior to heating the barium zirconate particles and binder material.