Inventors:
Douglas E. Burkes - Idaho Falls ID, US
John J. Moore - Evergreen CO, US
Reed A. Ayers - Golden CO, US
International Classification:
C01B 25/26, C01B 15/16
Abstract:
A method for making high purity, multiphasic calcium phosphate powders using an Auto-Ignition Combustion Synthesis (AICS) reaction of a calcium salt, a phosphate salt and a fuel is provided. In the method provided, energy released from the AICS reaction between the calcium salt, phosphate salt and fuel ignites at temperatures much lower than the actual phase transformation temperatures and reaches a high temperature rapidly enough for synthesis of the desired product to occur, without the requirement for coprecipitation, an external heat source for calcination and/or additional steps for removing undesired precursors from the desired final product.