Preparation of Calcium Cobaltate Thin Films and High Temperature Wave-Absorbing Properties

Abstract

Abstract: Calcium cobaltate thin films were prepared by coating and sintering on alumina ceramic substrate with calcium cobaltate powder prepared by sol-gel method. The phase structure, temperature resistance characteristics and wave-absorbing properties of the thin films were studied. It is found that the calcium cobaltate powders prepared by sol-gel method are composed of Ca₉Co₁₂O₂₈ phase, and the powder particles are uniform, with a certain orientation growth and obvious lamellar structure. The sintered calcium cobaltate film is composed of fine Ca₃Co₄O₉ phase, which is closely bound to the alumina substrate. The thickness is about 20 μm. The square resistance of the films decreases rapidly with the increase of temperature, and keep around 20 Ω/□ at 300 ℃ to 800 ℃. At 800 ℃, the resistance-film type metamaterial absorber exhibits double absorption peaks at 8 GHz to 18 GHz.

Key words: calcium cobaltate film, sol-gel method, temperature resistance characteristic, electromagnetic wave, high temperature absorbing property

CLC Number:

TB34

GAO Yunfei, XU Baocai, GAO Haitao, DUAN Rongxia, MENG Na. Preparation of Calcium Cobaltate Thin Films and High Temperature Wave-Absorbing Properties[J]. Journal of Synthetic Crystals, 2021, 50(8): 1518-1524.

References

[1] 李玉坤,许志远,曹洁,等.耐高温宽带吸波超材料的设计及实验研究[J].武汉理工大学学报,2018,40(8):1-7.
LI Y K, XU Z Y, CAO J, et al. Design and experimental investigation of high temperature broad band metamaterial microwave absorber[J]. Journal of Wuhan University of Technology, 2018, 40(8): 1-7(in Chinese).
[2] 高振桓,杨乐馨,巩秀芳,等.Mar-M247高温合金900 ℃下的氧化行为研究[J].特种铸造及有色合金,2021,41(2):147-152.
GAO Z H, YANG L X, GONG X F, et al. Oxidation behaviour of mar-M247 super alloy at 900 ℃[J]. Special Casting & Nonferrous Alloys, 2021, 41(2): 147-152(in Chinese).
[3] 田南焱.TiB₂/La_0.1Sr_0.9TiO₃陶瓷的低温烧结及热电性能[D].哈尔滨:哈尔滨工业大学,2020.
TIAN N Y. Low temperature sintering and thermoelectric properties of TiB₂/La_0.1Sr_0.9TiO₃ ceramics[D]. Harbin: Harbin Institute of Technology, 2020(in Chinese).
[4] 张雨葳.W复合La_0.1Sr_0.9TiO₃陶瓷的制备及热电性能研究[D].哈尔滨:哈尔滨工业大学,2019.
ZHANG Y W. Preparation and thermoelectric properties of W-added La_0.1Sr_0.9TiO₃ ceramics[D]. Harbin: Harbin Institute of Technology, 2019(in Chinese).
[5] CONSTANTINESCU G, RASEKH S, AMIRKHIZI P, et al. Exploring the high-temperature electrical performance of Ca_3-xLa_xCo₄O₉ thermoelectric ceramics for moderate and low substitution levels[J]. Symmetry, 2021, 13(05):782-782.
[6] 张小珍,张王林,索帅峰,等.烧成温度对La_0.7Ca_0.3CrO₃/Al₂O₃导电陶瓷微滤膜支撑体结构与性能的影响[J].人工晶体学报,2016,45(4):980-985.
ZHANG X Z, ZHANG W L, SUO S F, et al. Influences of sintering temperature on structure and properties of porous La_0.7Ca_0.3CrO₃/Al₂O₃ support for conductive ceramic MF membranes[J]. Journal of Synthetic Crystals, 2016, 45(4): 980-985(in Chinese).
[7] JING R Y, JIN L, TIAN Y, et al. Bi(Mg_0.5Ti_0.5)O₃-doped NaNbO₃ ferroelectric ceramics: linear regulation of Curie temperature and ultra-high thermally stable dielectric response[J]. Ceramics International, 2019, 45(17): 21175-21182.
[8] 吴亚丽,岳彩霞,金宏.纳米Sb₂Se₃掺杂PZT铁电陶瓷材料的热电性能[J].粉末冶金工业,2021,31(1):82-85.
WU Y L, YUE C X, JIN H. Study of thermoelectric properties of nanocrystalline Sb₂Se₃ doped PZT ferroelectric ceramics[J]. Powder Metallurgy Industry, 2021, 31(1): 82-85(in Chinese).
[9] MA J, WANG C Z, HUANG B X, et al.Degradation and apatite formation of magnesium and zinc incorporated calcium silicate prepared by sol-gel method[J]. Materials Technology, 2021, 36(07): 420-429.
[10] LEE H, CALIARI F, SAMPATH S. Thermoelectric properties of plasma sprayed of calcium cobaltite (Ca₂Co₂O₅)[J]. Journal of the European Ceramic Society, 2019, 39(13): 3749-3755.
[11] YU J C, CHANG Y B, JAKUBCZYK E, et al. Modulation of electrical transport in calcium cobaltite ceramics and thick films through microstructure control and doping[J]. Journal of the European Ceramic Society, 2021, 41(9): 4859-4869.
[12] BOCHMANN A, REIMANN T, SCHULZ T, et al. Transverse thermoelectric multilayer generator with bismuth-substituted calcium cobaltite: design optimization through variation of tilt angle[J]. Journal of the European Ceramic Society, 2019, 39(9): 2923-2929.
[13] RAJA ANNAMALAI A, RAVI TEJA P, AGRAWAL D K, et al. Microwave heating synthesis and thermoelectric property characterization of highly dense Ca₃Co₄O₉ bulk[J]. Ceramics International, 2020, 46(11): 17951-17956.
[14] 李霄.烧结技术对Ca₃Co₄O₉热电陶瓷织构度和电学性能的影响[D].成都:西南交通大学,2019.
LI X. Effect of sintering techniques on the texture degree and electrical properties of Ca₃Co₄O₉ thermoelectric ceramics[D]. Chengdu: Southwest Jiaotong University, 2019(in Chinese).

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