The growth mechanism of CPED coating with zirconia sol addition on an Al-12Si alloy

被引：17
作者：
Wang, Ping [1 ]
Li, Jianping [1 ]
Ma, Zhijun [1 ]
Gao, Peihu [1 ]
机构：
[1] Xian Technol Univ, Sch Mat & Chem Engn, Shaanxi Key Lab Photoelect Funct Mat & Devices, Xian 710021, Shaanxi, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 740卷
基金：
中国国家自然科学基金;
关键词：
Al-12Si alloy; Cathode plasma electrolytic deposition (CPED); Zirconia sol; Growth mechanism model; PLASMA ELECTROLYTIC DEPOSITION; MAGNESIUM ALLOY; PISTON ALLOY; PEO PROCESS; MICROSTRUCTURE; AL; STRENGTH; SI;
D O I：
10.1016/j.jallcom.2017.09.280
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel thermal-protective coating has been prepared by CPED process on Al-12%Si alloy with the ZrO2 sol addition. The microstructure characteristics and formation mechanism of the coating were investigated by SEM, TEM, EDS, XRD, fourier transform infrared spectrometer (FTIR) and laser particle size analyzer. It was confirmed that the sol particle adsorbed on the cathode surface at first, and then formed a thin zirconia gel layer, which can promote the cathode discharge. With ZrO2 sol addition, the cathode plasma discharge on the coating surface is more obvious than that without zirconia sol addition and the coating is more uniform and compact and the thickness of the coating increases. Compared with the electrolyte without ZrO2 sol addition, the crystalline degree of ceramic layer is higher in zirconia sol solution, which indicates that ZrO2 sol can promote the transition of coating from amorphous to crystalline. Under the high temperature of plasma discharge, gel particles entered the discharge channels and then were sintered into ZrO2 ceramic particles. ZrO2 combined with Al2O3 formed by barrier layer together to finally form the composite ceramic coating. With ZrO2 sol addition, the thermal insulation performance of the coating increases. (C) 2017 Published by Elsevier B.V.
引用
收藏
页码：735 / 742
页数：8
相关论文
共 23 条
[1]   Preparation and properties of ceramic Al2O3 coating as TBCs on MCrAly layer applied on Inconel alloy by cathodic plasma electrolytic deposition [J].
Bahadori, Elnaz ;
Javadpour, Sirus ;
Shariat, M. H. ;
Mahzoon, Fatemeh .
SURFACE & COATINGS TECHNOLOGY, 2013, 228 :S611-S614
[2]   Fragmentation of in-flight particles and its influence on the microstructure and mechanical property of YSZ coating deposited by supersonic atmospheric plasma spraying [J].
Bai, Y. ;
Zhao, L. ;
Wang, Y. ;
Chen, D. ;
Li, B. Q. ;
Han, Z. H. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 632 :794-799
[3]   To improve corrosion resistance and hemocompatibility of magnesium alloy via cathodic plasma electrolytic deposition combined with surface thiol-ene photopolymerization [J].
Chen, Yashao ;
Qian, Huaming ;
Wang, Xudong ;
Liu, Peng ;
Yan, Guangjun ;
Huang, Linlin ;
Yi, Jinhong .
MATERIALS LETTERS, 2015, 158 :178-181
[4]   Influence of adding glass beads in cathode region on the kinetics of cathode plasma electrolytic depositing ZrO2 coating [J].
Deng, Shunjie ;
Wang, Peng ;
He, Yedong .
SURFACE & COATINGS TECHNOLOGY, 2015, 279 :92-100
[5]   Phase evolution, interdiffusion and failure of La2(Zr0.7Ce0.3)2O7/YSZ thermal barrier coatings prepared by electron beam-physical vapor deposition [J].
He, Limin ;
Zhou, Xin ;
Zhong, Bintao ;
Xu, Zhenhua ;
Mu, Rende ;
Huang, Guanghong ;
Cao, Xueqiang .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 624 :137-147
[6]   Influence of voltage waveform on anodic film of AZ91 Mg alloy via plasma electrolytic oxidation: Microstructural characteristics and electrochemical responses [J].
Ko, Young Gun ;
Lee, Eung Seok ;
Shin, Dong Hyuk .
JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 586 :S357-S361
[7]   Structure, mechanical properties and thermal stability of CrAlN/ZrO2 nanomultilayers deposited by magnetron sputtering [J].
Li, Wei ;
Liu, Ping ;
Zhao, Yongsheng ;
Ma, Fengcang ;
Liu, Xinkuan ;
Chen, Xiaohong ;
He, Daihua .
JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 562 :5-10
[8]   Al2O3-ZrO2 ceramic coatings fabricated on WE43 magnesium alloy by cathodic plasma electrolytic deposition [J].
Liu, Peng ;
Pan, Xin ;
Yang, Weihu ;
Cai, Kaiyong ;
Chen, Yashao .
MATERIALS LETTERS, 2012, 70 :16-18
[9]   Nanostructured Al and Cu alloys with superior strength and electrical conductivity [J].
Murashkin, M. Yu ;
Sabirov, I. ;
Sauvage, X. ;
Valiev, R. Z. .
JOURNAL OF MATERIALS SCIENCE, 2016, 51 (01) :33-49
[10]   High temperature oxidation behavior of a novel Ni-Cr binary alloy coating prepared by cathode plasma electrolytic deposition [J].
Quan, Cheng ;
He, Yedong ;
Zhang, Jin .
SURFACE & COATINGS TECHNOLOGY, 2016, 292 :11-19
123