Patent ID: 6132653
Filing Date: 2000-10-17
Classification: B05D,B22F,C01B,C23C,Y02P,Y02T,Y10T

Abstract:
A powder produced by a process comprising:a) at a first selected temperature and a first selected pressure, dissolving into a suitable carrier to form thereby a transport solution one or more reagents capable of reacting to form a powder in a region, wherein the region has a second selected pressure lower than the first selected pressure;b) pressurizing the transport solution to a third selected pressure above the second selected pressure using a pressure regulator;c) directing the pressurized transport solution to a fluid conduit having an input end and an opposed output end having a temperature regulator positioned thereon for regulating the temperature of the solution at the output end, wherein the output end further comprises an outlet port oriented to direct the fluid in the conduit into the region;d) heating the solution to a second selected temperature near the critical temperature of the solution while maintaining the third selected pressure above the second selected pressure and above the corresponding critical pressure of the solution at the second selected temperature;e) directing the pressurized, heated solution through the outlet port of the conduit into the region to produce a spray;f) admixing one or more selected gases into the spray to form a reactable spray; andg) exposing the reactable spray to an energy source to react the reactable spray, thereby forming the powder.