Effect of Thermal Shock on Mechanical Properties of Siliconized Graphite with ZrB2-SiC-La2O3/SiC Coating

doi:10.11902/1005.4537.2020.046

Journal of Chinese Society for Corrosion and protection

2021, Vol. 41

Issue (1): 29-35 DOI: 10.11902/1005.4537.2020.046

Current Issue | Archive | Adv Search

Effect of Thermal Shock on Mechanical Properties of Siliconized Graphite with ZrB₂-SiC-La₂O₃/SiC Coating

REN Yan¹^,², QIAN Yuhai¹(

), ZHANG Xintao¹^,², XU Jingjun¹, ZUO Jun¹, LI Meishuan¹

^1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
^2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China

Download:

HTML

PDF(18347KB)
Export: BibTeX | EndNote (RIS)

Abstract

A ZrB₂-SiC-La₂O₃/SiC dual-layer coating was prepared on siliconized graphite by the combination of slurry method and pack cementation. The mechanical properties of the coated siliconized graphite before and after thermal shock were investigated and compared with the bare siliconized graphite. The mass loss was observed and its value of per unit area of the bare siliconized graphite was 52.1 mg/cm², and the flexural strength retention was only 52.0% after thermal shock test from 1500 ℃ to room temperature for 10 cycles, while they were 5.6 mg/cm² and 78.5% for the coated ones, respectively. The high strength retention of the coated siliconized graphite after thermal shock could be attributed to the formation of a protective oxide scale on its surface, which protected the graphite substrate from oxidation and avoided the formation of defects in the interior regions of the coated siliconized graphite.

Key words: graphite ultrahigh temperature ceramic coating thermal shock flexural strength

Received: 13 March 2020

ZTFLH:

TB321

Fund: National Natural Science Foundation of China(51571203)

Corresponding Authors: QIAN Yuhai E-mail: yhqian@imr.ac.cn

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Yan REN
	Yuhai QIAN
	Xintao ZHANG
	Jingjun XU
	Jun ZUO
	Meishuan LI

Cite this article:

REN Yan, QIAN Yuhai, ZHANG Xintao, XU Jingjun, ZUO Jun, LI Meishuan. Effect of Thermal Shock on Mechanical Properties of Siliconized Graphite with ZrB₂-SiC-La₂O₃/SiC Coating. Journal of Chinese Society for Corrosion and protection, 2021, 41(1): 29-35.

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2020.046 OR https://www.jcscp.org/EN/Y2021/V41/I1/29

Fig.1 XRD patterns of siliconized graphite (a), raw powders of inner layer (b) and surface of outer layer (c) of ZrB₂-SiC-La₂O₃/SiC coating

Fig.2 Surface (a, c) and cross-sectional (b, d) morphologies of SG (a, b) and CSG (c, d) samples

Fig.3 Mass changes of SG and CSG samples during thermal shock

Fig.4 XRD patterns of the surfaces of SG (a) and CSG (b) samples after thermal shock

Fig.5 Surface morphologies of SG (a) and CSG (b) samples after thermal shock

Fig.6 Flexural strength (a) and typical stress-displacement (b) curves of SG and CSG samples before and after thermal shock

Fig.7 Fracture morphologies (a1, a2, b1, b2) and corresponding EDS elemental mappings (a3, b3) of SG sample before (a1~a3) and after (b1~b3) thermal shock

Fig.8 Fracture morphologies (a1, a2, b1, b2) and corresponding elemental mappings (a3, b3) of CSG sample before (a1~a3) and after (b1~b3) thermal shock

1	Buckley J D, Edie D D. Carbon-Carbon Materials and Composites [M]. New York: William Andrew, 1993
2	Crocker P, McEnaney B. Oxidation and fracture of a woven 2D carbon-carbon composite [J]. Carbon, 1991, 29: 881
3	Jin X C, Fan X L, Lu C S, et al. Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites [J]. J. Eur. Ceram. Soc., 2018, 38: 1
4	Corral E L. Ultra-high temperature ceramic coatings [J]. Adv. Mater. Proce., 2008, 166: 30
5	Fahrenholtz W G, Hilmas G E. Ultra-high temperature ceramics: Materials for extreme environments [J]. Scr. Mater., 2017, 129: 94
6	Opeka M M, Talmy I G, Zaykoski J A. Oxidation-based materials selection for 2000 ℃+hypersonic aerosurfaces: Theoretical considerations and historical experience [J]. J. Mater. Sci., 2004, 39: 5887
7	Han W B, Hu P, Zhang X H, et al. High-temperature oxidation at 1900 ℃ of ZrB₂-x SiC ultrahigh-temperature ceramic composites [J]. J. Am. Ceram. Soc., 2008, 91: 3328
8	Talmy I G, Zaykoski J A, Opeka M M. High-temperature chemistry and oxidation of ZrB₂ ceramics containing SiC, Si₃N₄, Ta₅Si₃, and TaSi₂ [J]. J. Am. Ceram. Soc., 2008, 91: 2250
9	Monteverde F, Bellosi A. Oxidation of ZrB₂-based ceramics in dry air [J]. J. Electrochem. Soc., 2003, 150: B552
10	Monteverde F, Bellosi A. The resistance to oxidation of an HfB₂-SiC composite [J]. J. Eur. Ceram. Soc., 2005, 25: 1025
11	Silvestroni L, Stricker K, Sciti D, et al. Understanding the oxidation behavior of a ZrB₂-MoSi₂ composite at ultra-high temperatures [J]. Acta Mater., 2008, 151: 216
12	Dehdashti M K, Fahrenholtz W G, Hilmas G E. Effects of transition metals on the oxidation behavior of ZrB₂ ceramics [J]. Corros. Sci., 2005, 91: 224
13	Zapata-Solvas E, Jayaseelan D D, Brown P M, et al. Effect of La₂O₃ addition on long-term oxidation kinetics of ZrB₂-SiC and HfB₂-SiC ultra-high temperature ceramics [J]. J. Eur. Ceram. Soc., 2014, 34: 3535
14	Han W N. Preparation and oxidation resistance of SiC/γ-Y₂Si₂O₇ double-layer coating on C/C composites [D]. Shenyang: Northeastern University, 2009
	韩为宁. 碳/碳复合材料SiC/γ-Y₂Si₂O₇抗氧化复合涂层的研究 [D]. 沈阳: 东北大学, 2009
15	Eakins E, Jayaseelan D D, Lee W E. Toward oxidation-resistant ZrB₂-SiC ultra high temperature ceramics [J]. Metall. Mater. Trans., 2011, 42A: 878
16	Fu Q G, Jing J Y, Tan B Y, et al. Nanowire-toughened transition layer to improve the oxidation resistance of SiC-MoSi₂-ZrB₂ coating for C/C composites [J]. Corros. Sci., 2016, 111: 259
17	Wang C C, Li K Z, He Q C, et al. Oxidation and ablation protection of plasma sprayed LaB₆-MoSi₂-ZrB₂ coating for carbon/carbon composites [J]. Corros. Sci., 2019, 151: 57
18	Shaw L L. Thermal residual stresses in plates and coatings composed of multi-layered and functionally graded materials [J]. Composites, 1998, 29B: 199

[1]	LI Fengjie,CHEN Minghui,ZHANG Zheming,WANG Shuo,WANG Fuhui. Preparation and Thermal Shock Behavior of a Metal-enamel High-temperature Protective Coating[J]. 中国腐蚀与防护学报, 2019, 39(5): 411-416.
[2]	Qizhan WAN,Ningning CHEN,Peipei YANG,Lian ZHONG,Yanhua WANG,Jia WANG. Synthesis and Corrosion Performance of Composites of Polyaniline/Modified Graphite[J]. 中国腐蚀与防护学报, 2017, 37(5): 428-434.
[3]	LI Jing, MA Zhiying, HUANG Shaoping,LI Jianming, XU Lizhan. RESEARCH ON SMALL CURRENT ARC EROSION OF SILVER/GRAPHITE CONTACT MATERIAL WITH LOW VOLTAGE AND RESISTIVE LOAD AT 400 Hz[J]. 中国腐蚀与防护学报, 2010, 30(3): 231-235.
[4]	Changguang Deng; Ziqi Kuang. THE EFFECT OF LANTHANUM BEARING FERROSILICON TOTHE MICROSTRUCTURE AND PERFORMANCES OF TBCs GRADED COATING[J]. 中国腐蚀与防护学报, 2002, 22(3): 176-179 .

[1]	Xiaoming Tan. Prediction Model for Corrosion of Aluminum Alloys Based on Artificial Neural network and Analysis of the Precision[J]. J Chin Soc Corr Pro, 2004, 24(4): 218 -221 .

Viewed

Full text

Abstract

Cited

Shared

Discussed