US4196004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant glasses that contain chemical additives for application over metal substrates
Assignee: Individual
•
Filing: 1978-03-22
•
Granted: 1980-04-01
•
Expires: 1998-03-22
Abstract
Abstract Protective coatings for alloys, mild steel, and enameling iron that has high resistance to corrosive attack and superior thermomechanical properties over ordinary glass or enamel coatings is disclosed. The desired properties are imparted to the coatings by various chemical additions during the milling procedures.
Inventors
- 👤 Manfred Berretz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:01
CPC Classifications
C; C23; C23D; C23D5/00; C03; C03C; C03C8/00; C03C8/02; C03C8/06; C03C8/08; C03C8/14; C03C8/20; C03C2207/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
The method of enhancing the mechanical strength, impact, abrasion, and thermal shock resistance of both a transparent and opaque, acid, alkaline, and water resistant host glass which comprises the steps of incorporating into a frit of the host glass crystalline additives which are insoluble in the molten host glass in ratios of from 5% to 80% by weight of the host glass, said additives selected from one or more of the following chemical constituents: Lithium Titanate Lithium Silicate Lithium Aluminate Lithium Aluminum Silicate Magnesium Titanate Magnesium Silicate, wherein the transparent host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 48-70
TiO.sub.2 1.5-10
ZrO.sub.2 2-10
Li.sub.2 O 0.5-12
Na.sub.2 O 5-20
K.sub.2 O 1-5
MgO 1-5
CaO 1.5-6
CaF.sub.2 1-6
SrO 1-5
______________________________________ and the opaque host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 45-72
TiO.sub.2 12-20
ZrO.sub.2 5-16
Li.sub.2 O 0.5-5
Na.sub.2 O 6-12
K.sub.2 O 0-6
MgO 0.5-4
CaO 1-4
P.sub.2 O.sub.5 2-8
ZnO 0-4
Al.sub.2 O.sub.3 0-3
B.sub.2 O.sub.3 2-8
______________________________________
Claim 2
Independent Claim
166 words
The method of enhancing the mechanical strength, impact, abrasion, and thermal shock resistance of both a transparent and opaque, acid, alkaline, and water resistant host glass which comprises the steps of incorporating into a frit of the host glass crystalline additives which are insoluble in the molten host glass in ratios of from 5% to 80% by weight of the host glass, said additives selected from one or more of the following chemical constituents: Lithium Titanate Lithium Silicate Lithium Aluminate Lithium Aluminum Silicate Magnesium Titanate Magnesium Silicate, wherein the transparent host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 48-70
TiO.sub.2 1.5-10
ZrO.sub.2 2-10
Li.sub.2 O 0.5-12
Na.sub.2 O 5-20
K.sub.2 O 1-5
MgO 1-5
CaO 1.5-6
CaF.sub.2 1-6
SrO 1-5
______________________________________ and the opaque host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 45-72
TiO.sub.2 12-20
ZrO.sub.2 5-16
Li.sub.2 O 0.5-5
Na.sub.2 O 6-12
K.sub.2 O 0-6
MgO 0.5-4
CaO 1-4
P.sub.2 O.sub.5 2-8
ZnO 0-4
Al.sub.2 O.sub.3 0-3
B.sub.2 O.sub.3 2-8
______________________________________
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the host glass is initially smelted between 1900° F.-2400° F. (1038° C.-1316° C.) and then water quenched to provide a frit of the glass.
Claim 4
Dependent Claim
22 words
The method of claim 2 wherein the chemical constituents are added to and during milling of the frit of the host glass.
Claim 5
Dependent Claim
47 words
The method of claim 2 wherein the chemical constituents are added to frit of the host glass in comminuted form consisting of 30%-85% by weight of what is left on a 325 mesh screen and from 15%-70% by weight of what passes through a 325 mesh screen.
Claim 6
Dependent Claim
37 words
The method of claim 1 wherein the chemical additives which are added to frit of a transparent host glass are selected from one or more of the following: Lithium Titanate, Lithium Silicate, Lithium Aluminum Silicate, Magnesium Titanate.
Claim 7
Dependent Claim
34 words
The method of claim 1 wherein the chemical additives which are added to frit of an opaque host glass are selected from one or more of the following: Magnesium Silicate, Lithium Silicate, Lithium Aluminate.
Claim 8
Dependent Claim
42 words
The method of claim 1 which includes the steps of reducing the particles of the mixture of host glass frit and chemical additives to a powder for dry and hot dusting to a metal base to be provided with a ceramic coating.
Claim 9
Dependent Claim
27 words
The method of claim 7 which includes the steps of adding liquid to the powder to form a slip formulation thereof for application to a metal base.
Claim 10
Dependent Claim
49 words
A method of claim 8 which includes the steps of applying a mixture of a host glass and chemical additives to a metal base and thereafter subjecting said coated base to temperatures of 1450° F.-1680° F. (788° C.-916° C.) for providing a smooth continuous ceramic coating to said metal.
Claim 11
Independent Claim
244 words
The method of enhancing the mechanical strength, impact, abrasion, and thermal shock resistance of both a transparent and opaque host glass of a ceramic coating which comprises the steps of incorporating into the frit of the host glass crystal additives which are insoluble in the molten host glass in ratios of from 5% to 80% by weight of the host glass wherein: additives selected from one or more of the following chemical constituents increase resistance of the ceramic coating to thermal shock: Lithium Titanate, Lithium Silicate, Lithium Aluminum Silicate; additives selected from one or more of the following chemical constituents impart mechanical strength to the ceramic coating: Magnesium Silicate, Magnesium Titanate, Lithium Aluminate; additives selected from one or more of the following chemical constituents enhance the impact resistance of the ceramic coating: Magnesium Titanate, Lithium Aluminate; and additives selected from one or more of the following chemical constituents enhance the abrasion resistance of the ceramic coating: Magnesium Titanate, Lithium aluminum Silicate, Magnesium Silicate, Lithium Aluminate wherein the transparent host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 48-70
TiO.sub.2 1.5-10
ZrO.sub.2 2-10
Li.sub.2 O 0.5-12
Na.sub.2 O 5-20
K.sub.2 O 1-5
MgO 1-5
CaO 1.5-6
CaF.sub.2 1-6
SrO 1-5
______________________________________ and the opaque host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 45-72
TiO.sub.2 12-20
ZrO.sub.2 5-16
Li.sub.2 O 0.5-5
Na.sub.2 O 6-12
K.sub.2 O 0-6
MgO 0.5-4
CaO 1-4
P.sub.2 O.sub.5 2-8
ZnO 0-4
Al.sub.2 O.sub.3 0-3
B.sub.2 O.sub.3 2-8
______________________________________
Claim 12
Independent Claim
244 words
The method of enhancing the mechanical strength, impact, abrasion, and thermal shock resistance of both a transparent and opaque host glass of a ceramic coating which comprises the steps of incorporating into the frit of the host glass crystal additives which are insoluble in the molten host glass in ratios of from 5% to 80% by weight of the host glass wherein: additives selected from one or more of the following chemical constituents increase resistance of the ceramic coating to thermal shock: Lithium Titanate, Lithium Silicate, Lithium Aluminum Silicate; additives selected from one or more of the following chemical constituents impart mechanical strength to the ceramic coating: Magnesium Silicate, Magnesium Titanate, Lithium Aluminate; additives selected from one or more of the following chemical constituents enhance the impact resistance of the ceramic coating: Magnesium Titanate, Lithium Aluminate; and additives selected from one or more of the following chemical constituents enhance the abrasion resistance of the ceramic coating: Magnesium Titanate, Lithium aluminum Silicate, Magnesium Silicate, Lithium Aluminate wherein the transparent host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 48-70
TiO.sub.2 1.5-10
ZrO.sub.2 2-10
Li.sub.2 O 0.5-12
Na.sub.2 O 5-20
K.sub.2 O 1-5
MgO 1-5
CaO 1.5-6
CaF.sub.2 1-6
SrO 1-5
______________________________________ and the opaque host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 45-72
TiO.sub.2 12-20
ZrO.sub.2 5-16
Li.sub.2 O 0.5-5
Na.sub.2 O 6-12
K.sub.2 O 0-6
MgO 0.5-4
CaO 1-4
P.sub.2 O.sub.5 2-8
ZnO 0-4
Al.sub.2 O.sub.3 0-3
B.sub.2 O.sub.3 2-8
______________________________________
Claim 13
Dependent Claim
148 words
A ceramic coating characterized by increased mechanical strength, impact, abrasion, and thermal shock resistance which comprises a transparent or opaque host glass having incorporated therein crystalline chemical additives which are insoluble in the molten host glass in ratios from 5% to 80% by weight wherein said additives are selected from one or more of the following: Lithium Titanate Lithium Silicate Lithium Aluminum Silicate Lithium Aluminate Magnesium Titanate Magnesium Silicate, wherein the transparent host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 48-70
TiO.sub.2 1.5-10
ZrO.sub.2 2-10
Li.sub.2 O 0.5-12
Na.sub.2 O 5-20
K.sub.2 O 1-5
MgO 1-5
CaO 1.5-6
CaF.sub.2 1-6
SrO 1-5
______________________________________ and the opaque host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 45-72
TiO.sub.2 12-20
ZrO.sub.2 5-16
Li.sub.2 O 0.5-5
Na.sub.2 O 6-12
K.sub.2 O 0-6
MgO 0.5-4
CaO 1-4
P.sub.2 O.sub.5 2-8
ZnO 0-4
Al.sub.2 O.sub.3 0-3
B.sub.2 O.sub.3 2-8
______________________________________
Claim 14
Dependent Claim
148 words
A ceramic coating characterized by increased mechanical strength, impact, abrasion, and thermal shock resistance which comprises a transparent or opaque host glass having incorporated therein crystalline chemical additives which are insoluble in the molten host glass in ratios from 5% to 80% by weight wherein said additives are selected from one or more of the following: Lithium Titanate Lithium Silicate Lithium Aluminum Silicate Lithium Aluminate Magnesium Titanate Magnesium Silicate, wherein the transparent host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 48-70
TiO.sub.2 1.5-10
ZrO.sub.2 2-10
Li.sub.2 O 0.5-12
Na.sub.2 O 5-20
K.sub.2 O 1-5
MgO 1-5
CaO 1.5-6
CaF.sub.2 1-6
SrO 1-5
______________________________________ and the opaque host glass is composed of the following ingredients: ______________________________________
SiO.sub.2 45-72
TiO.sub.2 12-20
ZrO.sub.2 5-16
Li.sub.2 O 0.5-5
Na.sub.2 O 6-12
K.sub.2 O 0-6
MgO 0.5-4
CaO 1-4
P.sub.2 O.sub.5 2-8
ZnO 0-4
Al.sub.2 O.sub.3 0-3
B.sub.2 O.sub.3 2-8
______________________________________
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |