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Manufacture of porous net-shaped materials comprising alpha or beta tricalcium phosphate or mixtures thereof

  • US 8,545,786 B2
  • Filed: 07/16/2003
  • Issued: 10/01/2013
  • Est. Priority Date: 09/22/2000
  • Status: Active Grant
First Claim
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1. A method of producing a porous tricalcium phosphate net-shaped material having an intended final shape, comprising:

  • preparing a powder reactant mixture comprising calcium oxide powder and phosphorus pentoxide powder, wherein a mole percent ratio of said calcium oxide powder to said phosphorus pentoxide powder allows the powdered reactant mixture to form tricalcium phosphate upon subsequent combustion;

    forming said powder reactant mixture into said intended final shape by placing said powder reactant mixture into a combustible or noncombustible die having said intended final shape and compressing said powder reactant mixture to form a formed reactant mixture;

    if said die is noncombustible, removing said formed reactant mixture from said die; and

    heating said formed reactant mixture to at least an ignition temperature of said formed reactant mixture to produce said porous tricalcium phosphate net-shaped material by a combustion synthesis reaction, wherein said porous tricalcium phosphate net-shaped material is selected from the group consisting of an alpha tricalcium phosphate, a beta tricalcium phosphate and mixtures thereof.

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