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Handbook of Advanced Ceramics and Composites pp 1–31Cite as

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

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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.

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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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Authors and Affiliations

  1. Centre for Sol-Gel Coatings, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India

    R. Subasri & K. R. C. Soma Raju

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  1. R. Subasri
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  2. K. R. C. Soma Raju
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Correspondence to R. Subasri .

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Editors and Affiliations

  1. ARCI, International Advanced Research Centre f ARCI, Hyderabad, India

    Yashwant Mahajan

  2. ARCI, International Advanced Research Centre f ARCI, Hyderabad, Telangana, India

    Johnson Roy

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  1. Centre for Engineered Coatings, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India

    L Rama Krishna

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Subasri, R., Raju, K.R.C.S. (2019). Multifunctional Sol-Gel Nanocomposite Coatings for Aerospace, Energy, and Strategic Applications: Challenges and Perspectives. In: Mahajan, Y., Roy, J. (eds) Handbook of Advanced Ceramics and Composites. Springer, Cham. https://doi.org/10.1007/978-3-319-73255-8_49-1

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