US3637320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for assembly of parts
Assignee: Texas Instruments Inc
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Filing: 1968-12-31
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Granted: 1972-01-25
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Expires: 1988-12-31
Abstract
Abstract Metal carbonitride coatings are deposited on assemblies, the parts of which are connected by an adherent material by first heating a selected assembly, including the adherent material, and subsequently contacting the assembly with a gaseous stream which will yield reactive hydrogen, nitrogen, carbon, and a selected metal, upon contact with the heated assembly. The gaseous stream may, for example, contain hydrogen, nitrogen, titanium tetrachloride, and a carbon-containing compound such as methane, or the hydrogen may be present in compound form, as in the system dimethylhydrazine, nitrogen, and titanium tetrachloride. Alternatively, the necessary reactive constituents for forming the metal carbonitride coating may be contained in a single compound, such as tetrakis (dimethylamino) titanium.
Inventors
- 👤 Gene F Wakefield
- 👤 Carl D Reedy Jr
- 👤 John A Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:07
CPC Classifications
C; C22; C22C; C22C5/00; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/36; C23C24/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
30 words
The method of claim 1, wherein said assembly is heated to a temperature at least above the softening point of said adherent material before being contacted with said gaseous stream.
Claim 2
Dependent Claim
21 words
The method of claim 2, wherein said gaseous stream contains hydrogen, at least one hydrocarbon, and a halide of said element.
Claim 3
Dependent Claim
16 words
The method of claim 3, wherein said hydrocarbon is chlorobenzene and said halide is titanium tetrachloride.
Claim 4
Dependent Claim
17 words
The method of claim 3, wherein said hydrocarbon is natural gas and said halide is titanium tetrachloride.
Claim 5
Dependent Claim
29 words
The method of claim 3, wherein: a. said halide is titanium tetrachloride; and b. said at least one hydrocarbon is selected from the group propane, chlorobenzene and natural gas.
Claim 6
Dependent Claim
20 words
The method of claim 2, wherein said gaseous stream contains hydrogen, a halide of said element, and a nitrogen-containing hydrocarbon.
Claim 7
Dependent Claim
18 words
The method of claim 7, wherein said halide is titanium tetrachloride and said nitrogen-containing hydrocarbon is diamine ethylene.
Claim 8
Dependent Claim
17 words
The method of claim 7, wherein said halide is titanium tetrachloride and said nitrogen-containing hydrocarbon is pyridiNe.
Claim 9
Dependent Claim
17 words
The method of claim 7, wherein said halide is titanium tetrachloride and said nitrogen-containing hydrocarbon is trimethylamine.
Claim 10
Dependent Claim
27 words
The method of claim 7, wherein: a. said halide is titanium tetrachloride; and b. said nitrogen-containing hydrocarbon is selected from the group diamine ethylene, pyridine, and trimethylamine.
Claim 11
Dependent Claim
39 words
The method of claim 1, wherein said carbon, nitrogen, and element are constituents of a vaporous, hydrogen-containing organic compound capable of being decomposed to yield said carbon, nitrogen, and element in the reactive state to form said element-carbon-nitrogen compound.
Claim 12
Dependent Claim
23 words
The method of claim 12, wherein: said contacting is effected at a temperature above the melting temperature of said alloy, braze, or metal.
Claim 13
Dependent Claim
22 words
The method of claim 12, wherein said organic compound is dispersed within a carrier gas selected from nitrogen, hydrogen, and mixtures thereof.
Claim 14
Dependent Claim
76 words
The method of claim 12, wherein said organic compound has the generic formula ((R)2N)nMe wherein: Me is an element of the group boron, silicon and the transition metals of groups IVB, VB and VIB of the Periodic Chart; n is a valence of Me; and R is selected from hydrogen and hydrocarbon radicals each having from one to about 18 carbon atoms, provided at least one R group is at least one of said hydrocarbon radicals.
Claim 15
Dependent Claim
18 words
The method of claim 15, wherein said softening is effected below the decomposition temperature of said organic compound.
Claim 16
Dependent Claim
13 words
The method of claim 15, wherein said organic compound is tetrakis (dimethylamino) titanium.
Claim 17
Dependent Claim
13 words
The method of claim 15, wherein said organic compound is tetrakis (diethylamino) titanium.
Claim 18
Dependent Claim
13 words
The method of claim 15, wherein said organic compound is tetrakis (diphenylamino) titanium.
Claim 19
Dependent Claim
44 words
The method of claim 15, wherein: a. said organic compound is selected from the group tetrakis (dimethylamino) titanium, tetrakis (diethylamino) titanium, and tetrakis (diphenylamino) titanium; and b. said contacting is effected at a temperature above the melting temperature of said alloy, braze, or metal.
Claim 20
Independent Claim
70 words
A method of coating an assembly of parts with a solid solution layer of titanium carbonitride, at least some of said parts being connected by a braze, which comprises: a. heating said assembly to a temperature above the melting temperature of said braze; and b. contacting said assembly with a gaseous stream containing titanium tetrachloride, natural gas, hydrogen, and nitrogen to effect deposition of said titanium carbonitride on said assembly.
Claim 21
Dependent Claim
62 words
The method of claim 21, wherein: a. said braze contains by weight from about 53 to about 55 percent silver, from about 39 to about 41 percent copper, from about 4 to about 6 percent zinc, and from about one-half to about 1 1/2 percent nickel; and b. said temperature is within the range of from about 700* to about 1,200* C.
Claim 22
Independent Claim
83 words
A method of coating an assembly of parts with a solid solution layer of titanium carbonitride, at least some of said parts being connected by a braze, which comprises: a. heating said assembly to a temperature above the melting temperature of said braze; and b. contacting said assembly at said temperature with a gaseous stream containing hydrogen and an organic compound selected from the group tetrakis (dimethylamino) titanium, tetrakis (diethylamino) titanium, and tetrakis (diphenylamino) titanium, said organic compound being dispersed within said hydrogen.
Claim 23
Dependent Claim
62 words
The method of claim 23, wherein: a. said braze contains by weight from about 53 to about 55 percent silver, from about 39 to about 41 percent copper, from about 4 to about 6 percent zinc, and from about one-half to about 1 1/2 percent nickel; and b. said temperature is within the range of from about 400* to about 1,200* C.
Claim 24
Independent Claim
126 words
A method of producing a carbonitride coating on an assembly of parts, at least some of said parts being connected by an alloy braze or metal, with vaporous reactant compounds comprising: a. heating said assembly to at least a temperature at which said alloy, braze, or metal will soften and said reactant compounds will disassociate; and b. contacting said assembly in the absence of substantial molecular hydrogen with a vaporous stream consisting essentially of a carrier gas and reactant compounds selected from (1) a halide having the general formula Me(x)n, wherein x is a halogen, n is a valence of Me, and Me is selected from silicon, boron, and transition metals in Groups IVB, VB, and VIB of the Periodic Chart, and (2) reactants selected from:
Claim 25
Dependent Claim
11 words
The method of claim 25, wherein said halide is a chloride.
Claim 26
Dependent Claim
12 words
The method of claim 26, wherein said chloride is a titanium chloride.
Claim 27
Dependent Claim
20 words
The method of claim 27, wherein said reactant stream consists essentially of a nitrogen carrier gas, titanium tetrachloride, and 1,1-dimethylhydrazine.
Claim 28
Dependent Claim
24 words
The method of claim 27, wherein said vaporous stream consists essentially of a nitrogen carrier gas, titanium tetrachloride, hydrazine, and at least one hydrocarbon.
Claim 29
Dependent Claim
72 words
The method of claim 25, wherein: a. said at least some of said parts are connected by a braze containing by weight from about 53 to about 55 percent silver, from about 39 to about 41 percent copper, from about 4 to about 6 percent zinc, and from about one-half to about 1 1/2 percent nickel; and b. said temperature is within the range of from about 400* to about 1,200* C.
Claim 30
Dependent Claim
83 words
An article comprising: a. an assembly of parts, at least some of said parts being connected by an adherent material comprising an alloy, braze or metal, said assembly having a preselected configuration; and b. a homogeneous solid solution of a carbonitride of an element selected from silicon, boron, and the transition metals of Groups IVB, VB, and VIB of the Periodic Chart, formed on the surface of said parts and on the surface of, and interspersed in, the surface of said adherent material.
Claim 31
Dependent Claim
11 words
The article of claim 31, wherein: said carbonitride is titanium carbonitride.
Claim 32
Dependent Claim
67 words
The article of claim 32, wherein: a. said adherent material is a braze containing by weight from about 53 to about 55 percent silver, from about 39 to about 41 percent copper, from about 4 to about 6 percent zinc, and from about one-half to about 1 1/2 percent nickel; and b. said assembly consists of stainless steel vane sectors brazed into holding rings in jet engines.
Claim 33
Dependent Claim
19 words
The article of claim 33, wherein said titanium carbonitride is from about one-half to about 1 1/2 mils thick.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |