Synthesis of MgO Coating Gd[sub.2]O[sub.3] Nanopowders for Consolidating Gd[sub.2]O[sub.3]-MgO Nanocomposite with Homogenous Phase Domain Distribution and High Mid-Infrared Transparency

Improved optical and mechanical properties are required for future infrared windows working in harsher mechanical and thermal environments than today. Ameliorating the homogeneity of the phase domain and reducing the size of the phase domain are effective approaches for enhancing the optical transmi...

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Published in:Coatings (Basel) 2022-09, Vol.12 (10)
Main Authors: Wu, Nan, Fu, Zhongchao, Long, Haibo, Wang, Jianming, Zhang, Jun, Hou, Zhaoxia, Li, Xiaodong, Sun, Xudong
Format: Article
Language:English
Subjects:
Hardness
Mechanical properties
Sintering
Urea
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container_issue 10
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container_title Coatings (Basel)
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creator Wu, Nan
Fu, Zhongchao
Long, Haibo
Wang, Jianming
Zhang, Jun
Hou, Zhaoxia
Li, Xiaodong
Sun, Xudong
description Improved optical and mechanical properties are required for future infrared windows working in harsher mechanical and thermal environments than today. Ameliorating the homogeneity of the phase domain and reducing the size of the phase domain are effective approaches for enhancing the optical transmittance and mechanical hardness of a nanocomposite. In this work, we reported that the Gd[sub.2]O[sub.3]-MgO nanopowders were prepared by two different processes. The core-shell nanopowders synthesized by urea precipitation have a much lower agglomeration than the nanopowders prepared by sol-gel. Excellent transmittance (70.0%-84.1%) at 3-6 μm mid-infrared wave range and a high Vickers hardness value (10.3 ± 0.6 GPa) were maintained using the nanopowders synthesized by urea precipitation mainly due to its homogenous phase domain distribution.
doi_str_mv 10.3390/coatings12101435
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subjects Hardness
Mechanical properties
Sintering
Urea
title Synthesis of MgO Coating Gd[sub.2]O[sub.3] Nanopowders for Consolidating Gd[sub.2]O[sub.3]-MgO Nanocomposite with Homogenous Phase Domain Distribution and High Mid-Infrared Transparency
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