Patent ID: 9410078
Filing Date: 2016-08-09
CPC Classification: C04B,C09K,E21B

Claim Text:
1. A method for producing a glass-ceramic, ceramic, metal or combinations thereof article, said method comprising a. forming a green body from a green body material that comprises at least one ceramic or ceramic precursor and a microsphere and/or a pore former, wherein a majority of said microsphere and/or pore formers are is distributed in said green body such that the majority of said microsphere and/or pore formers is not in contact with each other, and said microsphere and/or pore formers have a substantially uniform shape and size; b. sintering said green body under sintering conditions to form a sintered body having gas bubbles contained therein, and wherein said gas bubbles are at least partially surrounded by at least one glassy compound which forms a microsphere and/or pore in situ in said glass-ceramic, ceramic, metal or combinations thereof particle, wherein said glass-ceramic, ceramic, metal or combinations thereof article has a specific gravity of from about 1.0 to about 2.25, a porosity of from about 1% to about 10%, a crush strength of from about 10 MPa to about 300 MPa, and a four point bending strength of about 50 MPa to about 400 MPa.