US3900646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of plating metal uniformly on and throughout porous structures
Assignee: Individual
•
Filing: 1973-02-21
•
Granted: 1975-08-19
•
Expires: 1993-02-21
Abstract
Abstract A method of uniformly coating ceramic and alumina porous structures such as honeycomb and sponge structures are disclosed. The method comprises radiantly heating a rotating workpiece until the temperature of the workpiece reaches the decomposition temperature of a thermally decomposable metal bearing gas. Passing a metal bearing gas over the structure whereby a uniform and firmly adhered coating is obtained on and throughout the workpiece.
Inventors
- 👤 Robert A Clyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:26
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B01; B01J; B01J25/00; B01J25/02; B01J37/00; B01J37/02; B01J37/0238; C04B41/45; C04B41/50; C04B41/51; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C23; C23C; C23C16/00; C23C16/04; C23C16/045; C23C16/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A PROCESS FOR UNIFORMLY PLATING METAL BY VAPOR DEPOSITION ON A THROUGHOUT ONE OF A CERMIC OR ALUMINA SUBSTRATE HAVING THE STRUCTURE OF ONE OF A HONEYCOMB OR SPONGE THE PROCESS COMPRISING HEATING IN AN ENCLOSURE A ROTATABLY SUSPENDED SUBSTRATE BY RADIANT MEANS UNTIL THE SUBSTRATE REACHES THE COMPOSITION TEMPERATURE OF A THERMALLY DECOMPOSABLE METAL BEARING GASEOUS COMPOUND, ROTATING THE SUBSTRATE, PASSIN A TEMNINALLY DECOMPASABLE METAL BEARING COMPOUND INTO THE ENCLOSURE ALONG WITH A CARRIER GAS SO AS TO HAVE THE GAS COME INTO INTIMATE CONTACT WITH THE SUBSTRATE WHILE CONTINUOUSLY ROTATING THE SUBSTRATE AT A RATE OF AT LEAST ABOUT TWO RMP AND CONTINUOUSLY ACTIVATING AND DEACTIVATING THE RADIANT MEANS SO AS TO MAINTAIN THE TEMPERATURE OF THE WORKPIECE AT ABOUT THE DECOMPOSITION TEMPERATURE OF THE METAL BEARING GAS, WHEREBY THE METAL IS UNIFORMLY PLATED ON AND THROUGHOUT THE SUBSTRATE.
Claim 2
Dependent Claim
141 words
A PROCESS FOR UNIFORMLY PLATING METAL BY VAPOR DEPOSITION ON A THROUGHOUT ONE OF A CERMIC OR ALUMINA SUBSTRATE HAVING THE STRUCTURE OF ONE OF A HONEYCOMB OR SPONGE THE PROCESS COMPRISING HEATING IN AN ENCLOSURE A ROTATABLY SUSPENDED SUBSTRATE BY RADIANT MEANS UNTIL THE SUBSTRATE REACHES THE COMPOSITION TEMPERATURE OF A THERMALLY DECOMPOSABLE METAL BEARING GASEOUS COMPOUND, ROTATING THE SUBSTRATE, PASSIN A TEMNINALLY DECOMPASABLE METAL BEARING COMPOUND INTO THE ENCLOSURE ALONG WITH A CARRIER GAS SO AS TO HAVE THE GAS COME INTO INTIMATE CONTACT WITH THE SUBSTRATE WHILE CONTINUOUSLY ROTATING THE SUBSTRATE AT A RATE OF AT LEAST ABOUT TWO RMP AND CONTINUOUSLY ACTIVATING AND DEACTIVATING THE RADIANT MEANS SO AS TO MAINTAIN THE TEMPERATURE OF THE WORKPIECE AT ABOUT THE DECOMPOSITION TEMPERATURE OF THE METAL BEARING GAS, WHEREBY THE METAL IS UNIFORMLY PLATED ON AND THROUGHOUT THE SUBSTRATE.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the honeycomb or sponge substrate is one of Al2O3. LiAlSiO4 or SiC.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein the metal bearing gaseous compound is nickel carbonyl.
Claim 5
Dependent Claim
18 words
The process of claim 3 wherein the substrate is heated to at least from 310*F to about 450*F.
Claim 6
Dependent Claim
21 words
The process of claim 1 wherein the substrate is rotated at the rate of from about two to about 20 rpm.
Claim 7
Dependent Claim
17 words
The process of claim 5 wherein the substrate is rotated at the rate of about seven rpm.
Claim 8
Dependent Claim
16 words
The process of claim 1 wherein the substrate is oscillated through an angle of about 30*.
Claim 9
Dependent Claim
113 words
A process for uniformly plating nickel on and throughout an alumina or ceramic sponge or honeycomb substrate, comprising: a. radiantly heating in a nitrogen and carbon monoxide purged airtight chamber the rotatably suspended substrate to from about 340*F to about 450*F; b. continuously rotating the substrate at a rate of about 7 rpm; c. continuously activating and deactivating the radiant means so as to maintain the temperature; d. while rotating and activating and deactivating the radiant means passing vaporized nickel carbonyl into the chamber so as to come into intimate contact with the substrate whereby nickel is uniformly plated on and throughout the substrate; and e. removing the plated substrate from the chamber.
Claim 10
Dependent Claim
113 words
A process for uniformly plating nickel on and throughout an alumina or ceramic sponge or honeycomb substrate, comprising: a. radiantly heating in a nitrogen and carbon monoxide purged airtight chamber the rotatably suspended substrate to from about 340*F to about 450*F; b. continuously rotating the substrate at a rate of about 7 rpm; c. continuously activating and deactivating the radiant means so as to maintain the temperature; d. while rotating and activating and deactivating the radiant means passing vaporized nickel carbonyl into the chamber so as to come into intimate contact with the substrate whereby nickel is uniformly plated on and throughout the substrate; and e. removing the plated substrate from the chamber.
References Cited (Backward Citations)
US3004866A
Cited
US3075494A
Cited
US3121925A
Cited
US3158499A
Cited
US3160517A
Cited
US3213827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |