Sol-gel coated enamel for steel: 250 days of continuous high-temperature stability

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• 作者：Gundars Mezinskis^a ; ^{gundarsm@ktf.rtu.lv} ; Ilona Pavlovska^a ; ^{ilona.pavlovska@gmail.com} ; Kaspars Malnieks^a ; Laimons Bidermanis^a ; Andris Cimmers^a ; Pavels Onufrijevs^b
• 关键词：Enamel for steel A. Sol-gel processes ; B. Thermal properties ; C. Chemical properties ; E. Thermal applications
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：43
• 期：3
• 页码：2974-2980
• 全文大小：2482 K
• 卷排序：43

文摘

Two types of thermally durable and heat-resistant enamel coatings were applied to steel alloys. Three-layer TiO2-SiO2 sol-gel films were grown by a dip-coating method on an enamelled metal alloy to maintain and protect their properties from undesired environmental impact.The enamel coatings withstood 6000 h at 600 °C, retaining their colour while staying hard and adhering firmly to the metal surface. A three-layer sol-gel coating improved the chemical resistance of the enamelled metal by 6% (0 h), 29% (3000 h), and 28% (6000 h) at 600 °C. Throughout the whole treatment at 600 °C, the enamel coatings maintained their microhardness and even increased it from 3.6 to 4.4 GPa.