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

Patent · Wed Jan 01 00:00:00 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 The substrate is then withdrawn from the solution.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: Associated Universities, Inc., Upton, NY (United States)
• 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

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withdrawn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