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Multifunctional Sol-Gel Nanocomposite Coatings for Aerospace, Energy, and Strategic Applications: Challenges and Perspectives

  • R. SubasriEmail author
  • K. R. C. Soma Raju
Living reference work entry

Abstract

Sol-gel technique is a wet chemical synthesis procedure involving the hydrolysis of either a fully hydrolyzable metal/silicon alkoxide or an organically modified silane followed by condensation and polymerization reactions. Through this method, ceramics, glasses, and hybrid nanocomposite materials of high purity and homogeneity can be produced than when obtained through conventional processes that involve high-temperature treatment conditions. Sol-gel-derived hybrid nanocomposite coatings combine the interesting properties such as flexibility, hardness, etc. drawn from an organic polymer and an inorganic glass and hence are of great interest for aerospace, energy, and defense applications, due to their distinct advantages. Varied functionalities like corrosion protection, antireflection, scratch resistance, antibacterial, water/oil repellant, erosion resistant, and antistatic are possible to be obtained using this technique. Sol-gel nanocomposite films on appropriate substrates are also capable of being used as sensors for detecting chemical/biological warfare agents as well as for sensing ionizing radiation in the environment. Despite many advantages of this technique, there are still certain challenges that need to be circumvented in order to fully harness the potential of the coatings derived from this process. This chapter mainly focuses on the potential applications of sol-gel nanocomposite coatings for aerospace, energy, and strategic sectors, where challenges in using them for applications and future perspectives on how they can be mitigated are discussed.

Keywords

Sol-gel nanocomposite coatings Chrome-free Corrosion resistant Nanocontainers Self-healing Solar selective Antimicrobial, scratch resistant (Ultra)hydrophobic Chemical/biological sensor 

List of Abbreviations

γ-MAPTS

γ-trimethoxysilylpropylmethacrylate

APTMS

3-trimethoxysilylpropylamine

AR

Antireflective

ATMOS

bis[3-(trimethoxysilyl)-propyl]amine

CEST

Carboxyethylsilanetriol sodium salt

CFU

Colony formation units

CNT

Carbon nanotube

CSP

Concentrated solar power

CSPP

Concentrated Solar Power Plant

DienTMOS

(3-trimethoxysilylpropyl)diethylenetriamine

DNA

Deoxyribonucleic acid

DNI

Direct normal irradiance

enTMOS

Bis [3-(trimethoxysilyl)-propyl]ethylenediamine

FIB

Focused ion beam

HCE

Heat Collection Element

HMVF

High metal volume fraction

IR

Infrared

LMVF

Low metal volume fraction

MPTES

3-mercapto-propyltriethoxysilane

MTES

Triethoxymethylsilane

MTMS

Trimethoxymethylsilane

NO

Nitrogen monoxide

OD

Optical density

PC

Polycarbonate

PDA

polydiacetylene

PDMS

Poly-dimethylsiloxane

PMPS

Polymethylphenylsiloxane

PTC

Parabolic Trough Collector

PV

Photovoltaic

PVDF

Polyvinylidene fluoride

PVP

Poly-vinylpyrrolidone

RH

Relative humidity

ROS

Reactive oxygen species

RT

Room temperature

SNR

Signal-to-noise ratio

SSC

Solar-Selective Coatings

TEOS

Tetraethoxysilane

TMOS

Tetramethoxysilane

UV

Ultraviolet

VTES

Vinyltriethoxysilane

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Centre for Sol-Gel CoatingsInternational Advanced Research Centre for Powder Metallurgy and New Materials (ARCI)HyderabadIndia

Section editors and affiliations

  • L Rama Krishna
    • 1
  1. 1.Centre for Engineered CoatingsInternational Advanced Research Centre for Powder Metallurgy and New Materials (ARCI)HyderabadIndia

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