TRANSPARENT CERAMIC WITH COMPLEX GEOMETRY
A ceramic product includes a transparent ceramic panel having a non-planar geometry including a bend having a slippage plane, an increased haze, a non-uniform thickness, or a combination thereof. A method includes providing a transparent ceramic panel, heating the panel, bending the panel to conform to a non-planar geometry.
1 . A method of forming a ceramic product comprising:
heating a transparent ceramic panel; and
bending the panel to conform to a non-planar geometry.
2 . The method of claim 1 , wherein the non-planar geometry includes a bend, having at the bend a thickness variation, a dislocation density variation, or a combination thereof.
3 . The method of claim 1 , wherein the transparent ceramic panel has a planar geometry prior to bending.
4 . The method of claim 1 , further comprising polishing the transparent ceramic panel prior to bending.
5 . The method of claim 4 , wherein the transparent ceramic panel retains at least a portion of the polish after bending.
6 . The method of claim 1 , wherein the transparent ceramic panel comprises a sapphire, an AlON, or a spinel.
7 . The method of claim 6 , wherein the transparent ceramic panel comprises a sapphire.
8 . The method of claim 7 , wherein the sapphire comprises a major surface that lies along an a-plane or a c-plane.
9 . The method of claim 1 , wherein the non-planar geometry has a radius of curvature of no greater than 120 cm.
10 . The method of claim 1 , wherein the transparent ceramic panel, prior to bending, has a length of at least 35 cm.
11 . The method of claim 10 , wherein the transparent ceramic panel, prior to bending, has a width of at least 10 cm.
12 . A method of forming a ceramic product comprising:
heating a transparent ceramic panel; and
bending the panel to conform to a non-planar geometry, wherein the transparent ceramic panel, prior to bending, has a length of at least 30 cm.
13 . The method of claim 12 , wherein the non-planar geometry has a radius of curvature of no greater than 100 cm.
14 . The method of claim 12 , wherein the transparent ceramic panel, prior to bending, has a width of at least 15 cm.
15 . The method of claim 12 , wherein the non-planar geometry includes a bend, having at the bend a haze variation.
16 . The method of claim 12 , wherein the non-planar geometry includes a bend, having at apex of the bend a dislocation density variation.
17 . The method of claim 12 , wherein the transparent ceramic panel has a length greater than a width.
18 . A method of forming a ceramic product comprising:
heating a transparent ceramic panel; and
bending the panel to conform to a non-planar geometry, wherein the non-planar geometry includes a bend, having at the bend a thickness variation, a dislocation density variation, or a combination thereof.
19 . The method of claim 18 , wherein the transparent ceramic panel has a planar geometry prior to bending.
20 . The method of claim 18 , further comprising polishing the transparent ceramic panel prior to bending.