Synthesis and Performance of KH-560 Modified SiO2 Insulation Coating

doi:10.15541/jim20210085

Abstract

Abstract:

Soft magnetic alloy is the core material of the proton/heavy ion accelerator. To reduce the eddy current loss at high frequencies, the insulating coating needs to be coated on the surface of soft magnetic alloy, and to be followed-up heat treatment (~600 ℃) to lower the residual stress from defects and dislocations produced in the cold forming process of soft magnetic alloys. Therefore, the insulation coating for soft magnetic alloy should meet the requirement of high-temperature resistance. SiO₂ is one of the most common inorganic coating materials, which has good insulation performance and temperature resistance, so it is especially suitable for high-temperature insulation coating. In this work, fabrication process of SiO₂ insulating coating was systematically studied. The silane coupling agent 3-glycidyloxypropyltrimethoxysilane (KH-560) was added to the phytic acid-catalyzed tetraethyl orthosilicate (TEOS) and methyltriethoxysilane (MTES) sol to improve the film-forming property. Effect of KH-560 on structure and property of SiO₂ coating was analyzed in detail. The results showed that the stability and the film-forming property were improved effectively via adding a reasonable amount of KH-560. When adding amount of KH-560 is 0.04 mol, the as-preared SiO₂ coating exhibites excellent film-forming characteristics, corrosion resistance and electrical insulation with sheet resistance of 2.97×10¹¹ Ω/□ at 100 V.

Key words: soft magnetic alloy, SiO₂ coating, sheet resistance, Sol-Gel method

CLC Number:

TQ174

YANG Conggang, MI Le, FENG Aihu, YU Yang, SUN Dazhi, YU Yun. Synthesis and Performance of KH-560 Modified SiO₂ Insulation Coating[J]. Journal of Inorganic Materials, 2021, 36(12): 1343-1348.

Figures/Tables 6

References 18

[1]	LEARY A M, OHODNICKI P R, MCHENRY M E. Soft magnetic materials in high-frequency, high-power conversion applications. The journal of The Minerals, Metals & Materials Society, 2012, 64(7): 772-781.
[2]	SUNDAY K J, TAHERI M L. Soft magnetic composites: recent advancements in the technology. Metal Powder Report, 2017, 72(6): 425-429. DOI URL
[3]	SHOKROLLAHI H, JANGHORBAN K. Soft magnetic composite materials (SMCs). Journal of Materials Processing Technology, 2007, 189(1/2/3): 1-12. DOI URL
[4]	OHODNICKI P, EGBU J, YU Y, et al. Surface oxidation and crystallization of FeNi-based soft magnetic nanocrystalline and amorphous nanocomposite alloys. Journal of Alloys and Compounds, 2020, 834(15): 155038. DOI URL
[5]	SUN K, FENG S, JIANG Q, et al. Intergranular insulating reduced iron powder-carbonyl iron powder/SiO₂-Al₂O₃ soft magnetic composites with high saturation magnetic flux density and low core loss. Journal of Magnetism and Magnetic Materials, 2020, 493: 165705. DOI URL
[6]	YAGHTIN M, TAGHVAEI A H, HASHEMI B, et al. Effect of heat treatment on magnetic properties of iron-based soft magnetic composites with Al₂O₃ insulation coating produced by Sol-Gel method. Journal of Alloys and Compounds, 2013, 581: 293-297. DOI URL
[7]	WANG C, GUO Z, WANG J, et al. Industry-oriented Fe-based amorphous soft magnetic composites with SiO₂-coated layer by one-pot high-efficient synthesis method. Journal of Magnetism and Magnetic Materials, 2020, 509: 166924. DOI URL
[8]	WANG J, FAN X A, WU Z, et al. Intergranular insulated Fe/SiO₂ soft magnetic composite for decreased core loss. Advanced Powder Technology, 2016, 27: 1189-1194. DOI URL
[9]	LI W, CAI H, KANG Y, et al. High permeability and low loss bioinspired soft magnetic composites with nacre-like structure for high frequency applications. Acta Materialia, 2019, 167: 267-274. DOI URL
[10]	ZHOU B, DONG Y, LIU L, et al. Enhanced soft magnetic properties of the Fe-based amorphous powder cores with novel TiO₂ insulation coating layer. Journal of Magnetism and Magnetic Materials, 2019, 474: 1-8. DOI URL
[11]	XING W, YOU B, WU L. The microstructure and anticorrosion performance of phytic acid-catalyzed polysilsesquioxane coatings. Journal of Sol-Gel Science and Technology, 2007, 42(2): 187-195. DOI URL
[12]	WAN J J, WAN J Q, MA Y W, et al. Reactivity characteristics of SiO₂-coated zero-valent iron nanoparticles for 2,4-dichlorophenol degradation. Chemical Engineering Journal, 2013, 221: 300-307. DOI URL
[13]	ARAMAKI K, SHIMURA T. Protection of passivated iron against corrosion in a 0.1 mol/L NaNO₃ solution by coverage with an ultrathin polymer coating of carboxylate SAM. Corrosion Science, 2009, 51(9): 1887-1893. DOI URL
[14]	TIMPEL M, NARDI M, KRAUSE S, et al. Surface modification of ZnO (0001)-Zn with phosphonate-based self-assembled monolayers: binding modes, orientation, and work function. Chemistry of Materials, 2014, 26(17): 5042-5050. DOI URL
[15]	GAO X, LU K, XU L, et al. Excellent anti-corrosive pretreatment layer on iron substrate based on three-dimensional porous phytic acid/silane hybrid. Nanoscale, 2016, 8(3): 1555-1564. DOI URL
[16]	SHUBHA H N, VENKATESHA T V, VATHSALA K, et al. Preparation of self assembled sodium oleate monolayer on mild steel and its corrosion inhibition behavior in saline water. ACS Applied Materials & Interfaces, 2013, 5(21): 10738-10744.
[17]	GAO X, LI W, MA H. Effect of anti-corrosive performance, roughness and chemical composition of pre-treatment layer on the overall performance of the paint system on cold-rolled steel. Surface & Coatings Technology, 2017, 329: 19-28. DOI URL
[18]	LEE M S, JO N J. Coating of methyltriethoxysilane-modified colloidal silica on polymer substrates for abrasion resistance. Journal of Sol-Gel Science and Technology, 2002, 24(2): 175-180. DOI URL

Sample	E_corr/V (vs. SEC)	I_corr/(A·cm^-2)	R_p/(Ω·cm²)	PE/%
Raw soft magnetic alloy	-0.973	4.0982×10^-5	552.31	-
SiO₂-0.01 KH	-0.182	7.398×10^-6	8559.9	81.95
SiO₂-0.02 KH	-0.150	3.4603×10^-7	6519.6	99.16
SiO₂-0.03 KH	-0.065	3.1833×10^-7	22077	99.22
SiO₂-0.04 KH	-0.007	2.9071×10^-7	76910	99.29

Sample	E_corr/V (vs. SEC)	I_corr/(A·cm^-2)	R_p/(Ω·cm²)	PE/%
Raw soft magnetic alloy	-0.973	4.0982×10^-5	552.31	-
SiO₂-0.01 KH	-0.182	7.398×10^-6	8559.9	81.95
SiO₂-0.02 KH	-0.150	3.4603×10^-7	6519.6	99.16
SiO₂-0.03 KH	-0.065	3.1833×10^-7	22077	99.22
SiO₂-0.04 KH	-0.007	2.9071×10^-7	76910	99.29

Sample		Sheet resistance at 10 V/(Ω/□)	Sheet resistance at 50 V/(Ω/□)	Sheet resistance at 100 V/(Ω/□)
SiO₂-0.01 KH	1	2.33×10⁹	3.66×10⁸	2.92×10⁸
	2	8.68×10⁸	4.58×10⁸	7.56×10⁸
	3	1.59×10⁹	5.85×10⁸	2.61×10⁸
	Average	1.60×10⁹	4.70×10⁸	4.36×10⁸
SiO₂-0.02 KH	1	1.82×10¹⁰	4.92×10¹⁰	8.88×10⁹
	2	4.55×10¹⁰	3.70×10¹⁰	4.40×10⁹
	3	2.19×10¹⁰	2.71×10¹¹	1.71×10¹¹
	Average	2.85×10¹⁰	1.19×10¹¹	6.14×10¹⁰
SiO₂-0.03 KH	1	8.71×10¹⁰	1.25×10⁹	2.21×10⁹
	2	4.17×10¹⁰	6.55×10¹⁰	6.52×10⁹
	3	5.68×10¹⁰	8.58×10⁹	6.02×10⁹
	Average	6.19×10¹⁰	2.51×10¹⁰	4.92×10⁹
SiO₂-0.04 KH	1	8.62×10¹⁰	2.81×10¹¹	4.51×10¹⁰
	2	3.33×10¹¹	4.52×10¹⁰	2.76×10¹¹
	3	1.91×10¹¹	1.56×10¹⁰	5.70×10¹¹
	Average	2.03×10¹¹	1.14×10¹¹	2.97×10¹¹

Sample		Sheet resistance at 10 V/(Ω/□)	Sheet resistance at 50 V/(Ω/□)	Sheet resistance at 100 V/(Ω/□)
SiO₂-0.01 KH	1	2.33×10⁹	3.66×10⁸	2.92×10⁸
	2	8.68×10⁸	4.58×10⁸	7.56×10⁸
	3	1.59×10⁹	5.85×10⁸	2.61×10⁸
	Average	1.60×10⁹	4.70×10⁸	4.36×10⁸
SiO₂-0.02 KH	1	1.82×10¹⁰	4.92×10¹⁰	8.88×10⁹
	2	4.55×10¹⁰	3.70×10¹⁰	4.40×10⁹
	3	2.19×10¹⁰	2.71×10¹¹	1.71×10¹¹
	Average	2.85×10¹⁰	1.19×10¹¹	6.14×10¹⁰
SiO₂-0.03 KH	1	8.71×10¹⁰	1.25×10⁹	2.21×10⁹
	2	4.17×10¹⁰	6.55×10¹⁰	6.52×10⁹
	3	5.68×10¹⁰	8.58×10⁹	6.02×10⁹
	Average	6.19×10¹⁰	2.51×10¹⁰	4.92×10⁹
SiO₂-0.04 KH	1	8.62×10¹⁰	2.81×10¹¹	4.51×10¹⁰
	2	3.33×10¹¹	4.52×10¹⁰	2.76×10¹¹
	3	1.91×10¹¹	1.56×10¹⁰	5.70×10¹¹
	Average	2.03×10¹¹	1.14×10¹¹	2.97×10¹¹

Synthesis and Performance of KH-560 Modified SiO₂ Insulation Coating

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