US20020000269A1 - Architectural titanium - Google Patents
Architectural titanium Download PDFInfo
- Publication number
- US20020000269A1 US20020000269A1 US09/892,758 US89275801A US2002000269A1 US 20020000269 A1 US20020000269 A1 US 20020000269A1 US 89275801 A US89275801 A US 89275801A US 2002000269 A1 US2002000269 A1 US 2002000269A1
- Authority
- US
- United States
- Prior art keywords
- titanium
- article
- containing component
- titanium containing
- art
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
Definitions
- the invention is a method of thermally treating titanium, titanium alloys and titanium composites to produce an aesthetically attractive speckled surface and articles made therefrom.
- Titanium and titanium alloy sheet are finding increasing application in building and architectural construction. Selected newly designed office buildings and museums are sometimes clad with titanium sheet. Further enhancement of the appearance over conventional titanium would offer a highly desirable characteristic of added value.
- Titanium and its alloys microstructually exist in two phases.
- the alpha phase has a close packed hexagonal structure while the beta phase has a body centered cubic structure. Heating this material to above approximately 180° F. (the exact temperature will depend on the composition of the titanium alloy) produces beta (body centered cubic) structure which on cooling undergoes transformation to the alpha/beta (hexagonal closed pack) structure.
- the Inventors have found that repeated heating and cooling of these materials or heating for longer times in vacuum at temperatures well over the beta transformation (heating typically at 220° F.) causes the grain size to grow larger.
- the average diameter of the grain size can thus be made to vary from 0.5 mm for one or two cycles or short times to 25 mm or larger as additional thermal cycles or longer times are employed. These large grains produce an attractive sparkled texture to the titanium sheet.
- the thermal treatments can also be applied to fabricated components of titanium that include watch cases, computer containers and telephone components such as cell phone bodies.
- the attractive “bright speckled” titanium can be used as processed or can be further anodized by conventional technology to produce a variety of colors while still retaining the speckled titanium surface.
- the present invention is directed to a thermally treated sheet product or components of titanium and its alloys with an architecturally and aesthetically desirable surface finish.
- the resulting titanium sheet product may exhibit beneficial mechanical and wear properties normally associated with titanium and its alloys. Therefore, the attractive finish of the thermally treated sheet product or components resulting from the inventive process can be used in articles such as computer cases, watch cases, cell phones and as automotive interior and exterior trim.
- the inventors have discovered that the cyclic thermally treated titanium components result in an attractive article with a speckled grained surface.
- To produce small speckled grains treatment comprises only 1 or 2 cycles or heating above the beta transformation temperature for short times are determined to be sufficient. Where large speckled grains are desired, additional cycles or higher temperature and longer times can be applied until the preferred grain size for the particular article is achieved.
- each thermal cycle in performed in vacuum comprises a heating rate, a maximum temperature, holding at the maximum temperature for a controlled interval of time, followed by a controlled cooling rate.
- thermal cycling number of cycles
- maximum temperature maximum temperature
- holding time interval at the maximum temperature are varied.
- Articles which can be made according to the inventive process include, but are not limited to cases for watches or computers, components (or sheets) for building structures, articles such as automotive trim, and accessories such as doorknobs, bathroom fixtures and other household components.
Abstract
A method has been developed to produce an attractive surface on titanium or titanium alloys. The material involves repeated thermal treatment in vacuum above the beta transformation temperature followed by cooling below this transformation temperature. This treatment produces an attractive large grained, speckled surface. The method can be applied to titanium sheet for construction purposes or to titanium or titanium alloy components in art, architecture, components for automotive trim and casing for cellular phones or computers.
Description
- This application claims the benefit of priority under 35 U.S.C. §119(e) to provisional application number 60/214,384, filed Jun. 28, 2000.
- The invention is a method of thermally treating titanium, titanium alloys and titanium composites to produce an aesthetically attractive speckled surface and articles made therefrom.
- Titanium and titanium alloy sheet are finding increasing application in building and architectural construction. Selected newly designed office buildings and museums are sometimes clad with titanium sheet. Further enhancement of the appearance over conventional titanium would offer a highly desirable characteristic of added value.
- Titanium and its alloys microstructually exist in two phases. The alpha phase has a close packed hexagonal structure while the beta phase has a body centered cubic structure. Heating this material to above approximately 180° F. (the exact temperature will depend on the composition of the titanium alloy) produces beta (body centered cubic) structure which on cooling undergoes transformation to the alpha/beta (hexagonal closed pack) structure.
- The Inventors have found that repeated heating and cooling of these materials or heating for longer times in vacuum at temperatures well over the beta transformation (heating typically at 220° F.) causes the grain size to grow larger. The average diameter of the grain size can thus be made to vary from 0.5 mm for one or two cycles or short times to 25 mm or larger as additional thermal cycles or longer times are employed. These large grains produce an attractive sparkled texture to the titanium sheet.
- The thermal treatments can also be applied to fabricated components of titanium that include watch cases, computer containers and telephone components such as cell phone bodies. The attractive “bright speckled” titanium can be used as processed or can be further anodized by conventional technology to produce a variety of colors while still retaining the speckled titanium surface.
- Accordingly, the present invention is directed to a thermally treated sheet product or components of titanium and its alloys with an architecturally and aesthetically desirable surface finish. In addition, the resulting titanium sheet product may exhibit beneficial mechanical and wear properties normally associated with titanium and its alloys. Therefore, the attractive finish of the thermally treated sheet product or components resulting from the inventive process can be used in articles such as computer cases, watch cases, cell phones and as automotive interior and exterior trim.
- It is understood that both the forgoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention as claimed.
- The inventors have discovered that the cyclic thermally treated titanium components result in an attractive article with a speckled grained surface. To produce small speckled grains treatment comprises only 1 or 2 cycles or heating above the beta transformation temperature for short times are determined to be sufficient. Where large speckled grains are desired, additional cycles or higher temperature and longer times can be applied until the preferred grain size for the particular article is achieved.
- Preferably, each thermal cycle in performed in vacuum and comprises a heating rate, a maximum temperature, holding at the maximum temperature for a controlled interval of time, followed by a controlled cooling rate. To control the actual grain size achieved, thermal cycling (number of cycles), maximum temperature, and the holding time interval at the maximum temperature are varied.
- Articles which can be made according to the inventive process include, but are not limited to cases for watches or computers, components (or sheets) for building structures, articles such as automotive trim, and accessories such as doorknobs, bathroom fixtures and other household components.
Claims (7)
1. A method for producing an architecturally desirable surface finish in a titanium containing component, said method comprising:
thermally treating the titanium containing component at a temperature above the beta transition temperature for the titanium containing component and subsequently cooling through this transition temperature to the alpha or alpha/beta range.
2. An article comprising a titanium containing component made in accordance with the method of claim 1 .
3. The article of claim 2 , wherein said article is a cellular phone casing.
4. The article of claim 2 , wherein said article is automotive trim, a watch case, a watch band, a computer case, a household component, or an object of art.
5. The article of claim 4 , wherein said object of art is hanging art or a sculpture.
6. A titanium sheet for sidewall construction comprising a titanium containing component made in accordance with the method of claim 1 .
7. The titanium sheet of claim 6 having a speckled appearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/892,758 US20020000269A1 (en) | 2000-06-28 | 2001-06-28 | Architectural titanium |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21438400P | 2000-06-28 | 2000-06-28 | |
| US09/892,758 US20020000269A1 (en) | 2000-06-28 | 2001-06-28 | Architectural titanium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20020000269A1 true US20020000269A1 (en) | 2002-01-03 |
Family
ID=26908950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/892,758 Abandoned US20020000269A1 (en) | 2000-06-28 | 2001-06-28 | Architectural titanium |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US20020000269A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040243241A1 (en) * | 2003-05-30 | 2004-12-02 | Naim Istephanous | Implants based on engineered metal matrix composite materials having enhanced imaging and wear resistance |
| US20070248485A1 (en) * | 2005-03-15 | 2007-10-25 | Stanley Abkowitz | Titanium face plate for cellular phone with crystalline grain texture |
-
2001
- 2001-06-28 US US09/892,758 patent/US20020000269A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040243241A1 (en) * | 2003-05-30 | 2004-12-02 | Naim Istephanous | Implants based on engineered metal matrix composite materials having enhanced imaging and wear resistance |
| US7270679B2 (en) | 2003-05-30 | 2007-09-18 | Warsaw Orthopedic, Inc. | Implants based on engineered metal matrix composite materials having enhanced imaging and wear resistance |
| US20070248485A1 (en) * | 2005-03-15 | 2007-10-25 | Stanley Abkowitz | Titanium face plate for cellular phone with crystalline grain texture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: DYNAMET TECHNOLOGY, INC., MASSACHUSETTS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ABKOWITZ, STANLEY;HEUSSI, HAROLD L.;ABKOWITZ, SUSAN M.;REEL/FRAME:011976/0060 Effective date: 20010626 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |