Process of producing titanium composite having a coil-shaped skeletal structure on the surface thereof

• US 4,889,685 A
• Filed: 11/28/1986
• Issued: 12/26/1989
• Est. Priority Date: 11/27/1985
• Status: Expired due to Fees

• Current Assignee: Permelec Electrode, Ltd. (Industrie De Nora S.p.A)
• Original Assignee: Permelec Electrode, Ltd. (Industrie De Nora S.p.A)
• Inventors: Hosonuma, Masashi, Shimamune, Takayuki
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US06/935,986
• Time in Patent Office: 1,124 Days
• Field of Search: 419/5, 419/9, 419/23, 419/24, 419/54, 623/16
• US Class Current: 419/9
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/30 Joints
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/30907 Nets or sleeves applied to surface of prostheses or in cement
• CPC Class Codes: A61F 2002/30289 helically-coiled
• CPC Class Codes: A61F 2002/30451 soldered or brazed or welded
• CPC Class Codes: A61F 2002/30929 having at least two superposed coatings
• CPC Class Codes: A61F 2002/30968 Sintering
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00047 Aluminium or Al-based alloys
• CPC Class Codes: A61F 2310/00053 Vanadium or V-based alloys
• CPC Class Codes: A61F 2310/00095 Niobium or Nb-based alloys
• CPC Class Codes: A61F 2310/00131 Tantalum or Ta-based alloys
• CPC Class Codes: A61F 2310/00149 Platinum or Pt-based alloys
• CPC Class Codes: A61F 2310/00407 Coating made of titanium or of Ti-based alloys
• CPC Class Codes: A61L 27/06 Titanium or titanium alloys
• CPC Class Codes: B22F 7/002 of porous nature
• CPC Class Codes: C22C 14/00 Alloys based on titanium
• CPC Class Codes: C25D 17/12 : Shape or form C25D17/14 takes precedence

Abstract

A titanium composite having a coil-shaped skeletal structure on the surface, comprising a titanium or titanium alloy substrate and one or more layers of a coil-shaped skeletal titanium or titanium alloy structure that is firmly attached to the surface of said substrate and a process for producing a titanium composite having a coil-shaped skeletal structure on a surface of a titanium or titanium alloy substrate, which comprises: providing a coating composition which is a mixture of a titanium or titanium alloy powder with a binder; applying said composition in such a manner that titanium or titanium alloy coils which are to form the coil-shaped skeletal structure are firmly attached to both themselves and to the titanium or titanium alloy substrate; the heating the assembly either in vacuo or in an inert atmosphere so that the titanium or titanium alloy powder in the applied coating composition is sintered to have the coil-shaped skeletal titanium or titanium alloy structure attached firmly onto the titanium or titanium alloy substrate.

Claims

1. A process for producing a titanium composite having a coil-shaped skeletal structure on a surface of a titanium or titanium alloy substrate, which comprises:

providing a coating composition which is a mixture of a titanium or titanium alloy powder with a binder;

providing titanium or titanium alloy coils on the surface of a titanium or titanium alloy substrate;

applying said coating composition in such a manner that said titanium or titanium alloy coils which are to form the coil-shaped skeletal structure are securely attached to both themselves and to the titanium or titanium alloy substrate;

then

heating the assembly either in vacuo or in an inert atmosphere so that the titanium or titanium alloy powder in the applied coating composition is sintered to have the coil-shaped skeletal titanium or titanium alloy structure attached firmly onto the titanium or titanium alloy substrate.

2. A process as in claim 1, wherein the heating of the assembly is achieved at a temperature of between 900°

and 1,400°

C.

3. A process as in claim 1, wherein the titanium or titanium alloy substrate is grooved in the surface.