Metal/alloy coated ceramic
Ceramic surface can be coated with a metal or metal alloy and have extraordinary holding power between the surface and coating. For example, MgTTZ can be coated with CPT and may have a static shear strength for the coated surface of at least about 2,000 or 3,000 or 5,000 or 7,000 pounds or greater. The coated ceramic may be a prosthetic surgical load bearing implant.
1 . A coated ceramic comprising a fired ceramic body having a receiving surface that can serve as a substrate for a metal or matal alloy coating; and, on at least part of the receiving surface, the metal or metal alloy coating, wherein:
the fired ceramic body is a zirconia ceramic;
the metal or metal alloy coating is from a metal or metal alloy other than by tantalum vapor deposition; and
the coated ceramic has a static shear strength between the receiving surface of the ceramic body and the metal or metal alloy coating thereon of at least about 2,000 pounds.
2 . The coated ceramic of claim 1 , wherein the receiving surface of the fired ceramic body is MgTTZ.
3 . The coated ceramic of claim 1 , wherein the metal or metal alloy coating includes titanium.
4 . The coated ceramic of claim 2 , wherein the metal or metal alloy coating includes titanium.
5 . The coated ceramic of claim 4 , wherein the metal or metal alloy coating is CPT.
6 . The coated ceramic of claim 5 , wherein the CPT is a porous coating.
7 . The coated ceramic of claim 1 , wherein said static shear strength is at least about 3,000 pounds.
8 . The coated ceramic of claim 7 , wherein said static shear strength is at least about 5,000 pounds.
9 . The coated ceramic of claim 1 , which comprises a prosthetic surgical load bearing implant.
10 . The coated ceramic of claim 2 , which comprises a prosthetic surgical load bearing implant.
11 . The coated ceramic of claim 5 , which comprises a prosthetic surgical load bearing implant.
12 . The coated ceramic of claim 6 , which comprises a prosthetic surgical load bearing implant.
13 . The coated ceramic of claim 7 , which comprises a prosthetic surgical load bearing implant.
14 . The coated ceramic of claim 8 , which comprises a prosthetic surgical load bearing implant.
15 . The coated ceramic of claim 6 , which includes an articular surface and is selected from the group consisting of a femoral component for a knee joint, a tibial component for a knee joint, a patellofemoral replacement, a unicompartmental femoral component for a knee joint, a cup for an enarthrodial joint, a talus cap for an ankle joint, a femoral component for an ankle joint, a great toe implant, and a cap for a temporal mandibular joint.
16 . The coated ceramic of claim 15 , which is a femoral and/or tibial component for a non-rotating hinge knee.
17 . The coated ceramic of claim 15 , which is a femoral and/or tibial component for a rotating hinge knee.
18 . The coated ceramic of claim 15 , wherein said static shear strength is at least about 3,000 pounds.
19 . The coated ceramic of claim 18 , wherein said static shear strength is at least about 5,000 pounds.
20 . The coated ceramic of claim 19 , wherein said static shear strength is at least about 7,000 pounds.