Solid-gel precursor solutions and methods for the fabrication of polymetallicsiloxane coating films
Solutions and preparation methods necessary for the fabrication of metal oxide cross-linked polysiloxane coating films are disclosed. The films are useful in provide heat resistance against oxidation, wear resistance, thermal insulation, and corrosion resistance of substrates. The sol-gel precursor solution comprises a mixture of a monomeric organoalkoxysilane, a metal alkoxide M(OR)[sub n] (wherein M is Ti, Zr, Ge or Al; R is CH[sub 3], C[sub 2]H[sub 5] or C[sub 3]H[sub 7]; and n is 3 or 4), methanol, water, HCl and NaOH. The invention provides a sol-gel solution, and a method of use thereof, which can be applied and processed at low temperatures (i.e., < 1,000 C.). The substrate can be coated by immersing it in the above mentioned solution at ambient temperature. The substrate is then withdrawn from the solution. Next, the coated substrate is heated for a time sufficient and at a temperature sufficient to yield a solid coating. The coated substrate is then heated for a time sufficient, and temperature sufficient to produce a polymetallicsiloxane coating.
- DOE Contract Number:
- AC02-76CH00016
- Assignee:
- Associated Universities, Inc., Washington, DC (United States)
- Patent Number(s):
- US 5200237; A
- Application Number:
- PPN: US 7-783169
- OSTI ID:
- 6045520
- Resource Relation:
- Patent File Date: 28 Oct 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
POLYMERS
CHEMICAL PREPARATION
PROTECTIVE COATINGS
SILOXANES
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
CORROSION RESISTANCE
FABRICATION
GERMANIUM COMPOUNDS
HEAT RESISTANT MATERIALS
HEAT TREATMENTS
HYDROCHLORIC ACID
METHANOL
ORGANOMETALLIC COMPOUNDS
OXIDATION
PRECURSOR
SILANES
SODIUM HYDROXIDES
SOL-GEL PROCESS
SOLIDIFICATION
SOLUTIONS
SUBSTRATES
SURFACE COATING
THERMAL INSULATION
TITANIUM COMPOUNDS
WATER
WEAR RESISTANCE
ZIRCONIUM COMPOUNDS
ALCOHOLS
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
COATINGS
DEPOSITION
DISPERSIONS
HALOGEN COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
INORGANIC ACIDS
MATERIALS
MECHANICAL PROPERTIES
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SILICON COMPOUNDS
SODIUM COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties
360601 - Other Materials- Preparation & Manufacture