Preparation of hard optical coatings based on an organic/inorganic composite by sol-gel method

Wenxiu Que; Z. Sun; Y. Zhou; Y. L. Lam; S. D. Cheng; Y. C. Chan; C. H. Kam

doi:10.1016/S0167-577X(99)00207-4

Preparation of hard optical coatings based on an organic/inorganic composite by sol-gel method

Wenxiu Que, Z. Sun, Y. Zhou, Y. L. Lam, S. D. Cheng, Y. C. Chan, C. H. Kam

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Hard optical coating films based on SiO₂/TiO₂/organically modified silane (ORMOSIL) were obtained by the sol-gel technique. Tetraethoxysilane [TEOS, Si(OC₂H₅)₄], γ-Glycidoxypropyltrimethoxysilane [GLYMO, (CH₂OCH)CH₂O-(CH₂)₃Si(OCH₃)₃], and tetrapropylorthotitanate [TIP, Ti(O-i-C₃H₇)₄] were used as precursors for the SiO₂/TiO₂/ORMOSIL coatings. The hardness and Young's modulus of the coatings were characterized and found to depend on the heat-treatment temperature. Hardness as high as 10 GPa was achieved at a heat-treatment temperature of 1000°C for 20 min. Thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), and Raman spectroscopy were also used to investigate the structural properties of the coating. It is proposed that the high hardness of the coating film is related to the carbon and titanium content in the film.

Original language	English
Pages (from-to)	326-330
Number of pages	5
Journal	Materials Letters
Volume	42
Issue number	5
DOIs	https://doi.org/10.1016/S0167-577X(99)00207-4
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Preparation of hard optical coatings based on an organic/inorganic composite by sol-gel method",

abstract = "Hard optical coating films based on SiO2/TiO2/organically modified silane (ORMOSIL) were obtained by the sol-gel technique. Tetraethoxysilane [TEOS, Si(OC2H5)4], γ-Glycidoxypropyltrimethoxysilane [GLYMO, (CH2OCH)CH2O-(CH2)3Si(OCH3)3], and tetrapropylorthotitanate [TIP, Ti(O-i-C3H7)4] were used as precursors for the SiO2/TiO2/ORMOSIL coatings. The hardness and Young's modulus of the coatings were characterized and found to depend on the heat-treatment temperature. Hardness as high as 10 GPa was achieved at a heat-treatment temperature of 1000°C for 20 min. Thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), and Raman spectroscopy were also used to investigate the structural properties of the coating. It is proposed that the high hardness of the coating film is related to the carbon and titanium content in the film.",

author = "Wenxiu Que and Z. Sun and Y. Zhou and Lam, {Y. L.} and Cheng, {S. D.} and Chan, {Y. C.} and Kam, {C. H.}",

year = "2000",

doi = "10.1016/S0167-577X(99)00207-4",

language = "English",

volume = "42",

pages = "326--330",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

number = "5",

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T1 - Preparation of hard optical coatings based on an organic/inorganic composite by sol-gel method

AU - Que, Wenxiu

AU - Sun, Z.

AU - Zhou, Y.

AU - Lam, Y. L.

AU - Cheng, S. D.

AU - Chan, Y. C.

AU - Kam, C. H.

PY - 2000

Y1 - 2000

N2 - Hard optical coating films based on SiO2/TiO2/organically modified silane (ORMOSIL) were obtained by the sol-gel technique. Tetraethoxysilane [TEOS, Si(OC2H5)4], γ-Glycidoxypropyltrimethoxysilane [GLYMO, (CH2OCH)CH2O-(CH2)3Si(OCH3)3], and tetrapropylorthotitanate [TIP, Ti(O-i-C3H7)4] were used as precursors for the SiO2/TiO2/ORMOSIL coatings. The hardness and Young's modulus of the coatings were characterized and found to depend on the heat-treatment temperature. Hardness as high as 10 GPa was achieved at a heat-treatment temperature of 1000°C for 20 min. Thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), and Raman spectroscopy were also used to investigate the structural properties of the coating. It is proposed that the high hardness of the coating film is related to the carbon and titanium content in the film.

AB - Hard optical coating films based on SiO2/TiO2/organically modified silane (ORMOSIL) were obtained by the sol-gel technique. Tetraethoxysilane [TEOS, Si(OC2H5)4], γ-Glycidoxypropyltrimethoxysilane [GLYMO, (CH2OCH)CH2O-(CH2)3Si(OCH3)3], and tetrapropylorthotitanate [TIP, Ti(O-i-C3H7)4] were used as precursors for the SiO2/TiO2/ORMOSIL coatings. The hardness and Young's modulus of the coatings were characterized and found to depend on the heat-treatment temperature. Hardness as high as 10 GPa was achieved at a heat-treatment temperature of 1000°C for 20 min. Thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), and Raman spectroscopy were also used to investigate the structural properties of the coating. It is proposed that the high hardness of the coating film is related to the carbon and titanium content in the film.

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U2 - 10.1016/S0167-577X(99)00207-4

DO - 10.1016/S0167-577X(99)00207-4

M3 - Article

AN - SCOPUS:0034140589

SN - 0167-577X

VL - 42

SP - 326

EP - 330

JO - Materials Letters

JF - Materials Letters

IS - 5

ER -

Preparation of hard optical coatings based on an organic/inorganic composite by sol-gel method

Abstract

ASJC Scopus Subject Areas

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