Micro-nano structured functional coatings deposited by liquid plasma spraying
- PDF / 2,013,411 Bytes
- 18 Pages / 595.22 x 842 pts (A4) Page_size
- 66 Downloads / 273 Views
ISSN 2226-4108 CN 10-1154/TQ
Review
Micro-nano structured functional coatings deposited by liquid plasma spraying Yuchun HUANa, Kaidi WUa, Changjiu LIb, Hanlin LIAOc, Marc DEBLIQUYd, Chao ZHANGa,* a
b
College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China c ICB UMR 6303, CNRS, Université de Bourgogne Franche-Comté, UTBM, 90010 Belfort, France d Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, 7000 Mons, Belgium Received: March 8, 2020; Revised: June 27, 2020; Accepted: June 28, 2020 © The Author(s) 2020.
Abstract: Inspired by the micro-nano structure on the surface of biological materials or living organisms, micro-nano structure has been widely investigated in the field of functional coatings. Due to its large specific surface area, porosity, and dual-scale structure, it has recently attracted special attention. The typical fabrication processes of micro-nano structured coatings include sol-gel, hydrothermal synthesis, chemical vapor deposition, etc. This paper presents the main features of a recent deposition and synthesis technique, liquid plasma spraying (LPS). LPS is an important technical improvement of atmospheric plasma spraying. Compared with atmospheric plasma spraying, LPS is more suitable for preparing functional coatings with micro-nano structure. Micro-nano structured coatings are mainly classified into hierarchical-structure and binary-structure. The present study reviews the preparation technology, structural characteristics, functional properties, and potential applications of LPS coatings with a micro-nano structure. The micro-nano structured coatings obtained through tailoring the structure will present excellent performances. Keywords: liquid plasma spraying (LPS); composite spraying; micro-nano structure; functional coatings
1
Introduction
Micro-nano structure is a hydrophobic functional structure existing in natural materials such as lotus leaf and gecko hair [1]. Inspired by this natural structure, bionic micro-nano structure began to appear in surface technology. Nowadays, the micro-nano structure has been widely investigated in functional surface fields * Corresponding author. E-mail: [email protected]
such as gas sensitive coatings, thermal barrier coatings, hydrophobic coatings, wear-resistant coatings, and photocatalytic coatings [2–6]. It offers great performance due to its advantages of high specific surface area, high porosity, and a large number of reaction sites [2,7]. Micro-nano structures mainly have two types [8,9]. The first is a binary-structure with both nano- and micron-particles. Two-scale particles are distributed independently of each other. As shown in Fig. 1(a), micro-ZnSnO3 cubes were decorated with nano-TiO2. The other one is a hierarchical structure in which the
www.springer.com/journal/40145
2
J Adv Ceram 2020, 9(5): 0–0
Fig. 1 Scanning electron microscopy (SEM) images of micro-nano structured mater
Data Loading...
