Solid-gel precursor solutions and methods for the fabrication of polymetallicsiloxane coating films

Patent · Wed Jan 01 04:00:00 EST 1992

OSTI ID:868279

Sugama, Toshifumi ^[1]

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1. Mastic Beach, NY

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., <1000.degree. 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 The substrate is then withdrawn from the solution.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.

• Research Organization: ASSOC UNIVERSITIES INC
• DOE Contract Number: AC02-76CH00016
• Assignee: Associated Universities, Inc. (Washington, DC)
• Patent Number(s): US 5110863
• OSTI ID: 868279
• Country of Publication: United States
• Language: English

Related Subjects

/524/427/528/
1000
alkoxide
ambient
ambient temperature
applied
coated
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coating
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comprises
corrosion
corrosion resistance
cross-linked
cross-linked polysiloxane
degree
disclosed
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hcl
heat
heat resistance
heated
immersing
insulation
mentioned
metal
metal alkoxide
metal oxide
methanol
method
methods
mixture
monomeric
naoh
organoalkoxysilane
oxidation
oxide
oxide cross-linked
polymetallicsiloxane
polymetallicsiloxane coating
polysiloxane
polysiloxane coating
precursor
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provides
resistance
sol-gel
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solid coating
solid-gel
solid-gel precursor
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substrate
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sufficient
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temperatures
thermal
thermal insulation
time
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useful
water
wear
wear resistance
withdrawn
yield
zr