| (19) |
 |
|
(11) |
EP 0 493 326 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.03.1993 Bulletin 1993/11 |
| (43) |
Date of publication A2: |
|
01.07.1992 Bulletin 1992/27 |
| (22) |
Date of filing: 20.12.1991 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
26.12.1990 US 633914
|
| (71) |
Applicant: ELTECH SYSTEMS CORPORATION |
|
Boca Raton
Florida 33434 (US) |
|
| (72) |
Inventors: |
|
- Ernes, Lynne M.
Willoughby,
Ohio 44094 (US)
- Carlson, Richard C.
Euclid,
Ohio 44123 (US)
- Hardee, Kenneth L.
Middlefield,
Ohio 44062 (US)
|
| (74) |
Representative: Cronin, Brian Harold John |
|
42, rue Plantamour
1201 Genève
1201 Genève (CH) |
|
| |
|
| (54) |
Substrate of improved melt sprayed surface morphology |
(57) A metal surface is now described having enhanced adhesion of subsequently applied
coatings. The substrate metal of the article, such as a valve metal as represented
by titanium, is provided with a highly desirable surface characteristic for subsequent
coating application. This can be achieved by a plasma sprayed coating of well defined
surface morphology, the plasma spraying being with one or more metals usually valve
metals. The metal of the coating may be the same or different from the metal of the
substrate. Subsequently applied coatings, by penetrating into the coating of well
defined surface morphology, and desirably locked onto the resulting metal article
an provide enhanced lifetime even in rugged commercial environments.