不同升温速率下低温瓷釉涂层的熔化行为

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (8): 2881-2887.

不同升温速率下低温瓷釉涂层的熔化行为

郭鹏¹, 叶沈豪¹, 毛嘉熙¹, 钱昊¹, 刘毅², 闫东明¹

1.浙江大学建筑工程学院,杭州 310058;
2.浙江大学材料科学与工程学院,杭州 310058

收稿日期:2023-04-13 修订日期:2023-06-13 发布日期:2023-08-18
通信作者: 钱昊,博士,助理研究员。E-mail:qianh@zju.edu.cn
作者简介:郭鹏(1998—),男,硕士研究生。主要从事无机防腐涂层的研究。E-mail:22012276@zju.edu.cn
基金资助:
国家重点研发计划(2022YFE0109200);中国博士后科学基金面上资助(2022M722789)

Melting Behavior of Low-Temperature Enamel Coating at Different Heating Rates

GUO Peng¹, YE Shenhao¹, MAO Jiaxi¹, QIAN Hao¹, LIU Yi², YAN Dongming¹

1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China

Received:2023-04-13 Revised:2023-06-13 Published:2023-08-18

摘要/Abstract

摘要： 低温瓷釉(LTE)涂层是一种新型金属表面无机防腐涂层,了解其在烧结成型过程中的熔化行为有助于调控LTE涂层烧结工艺,得到基材表面覆盖完全、平滑的涂层。本文采用同步热分析仪研究LTE涂层粉末在烧结过程中的质量和热量变化,采用热机械分析仪测得LTE涂层圆柱体样品的玻璃化转变温度和热膨胀系数,采用自制热台显微镜研究不同升温速率下LTE涂层圆柱体样品黏度、高度、体积以及接触角的变化。结果表明,随着升温速率提高,LTE涂层圆柱体样品的烧结温度、软化温度和球形温度均降低,黏度减小,有利于涂层流平,因此宜采用20 ℃/min的升温速率。在530~550 ℃时,LTE涂层圆柱体样品的高度和接触角随温度的变化都将进入平台期,因此宜选择该温度区间作为LTE涂层的烧结温度。

关键词: LTE涂层, 升温速率, 黏度, 烧结温度, 特征温度, 接触角

Abstract: Low temperature enamel (LTE) coating is a new type of inorganic coating developed for metal surface corrosion protection. Understanding melting behavior of LTE coating during sintering process assist in the control of sintering technology, and produce a fully covering and smooth coating. Mass and heat changes of LTE coating powder during sintering process were investigated using synchronous thermal analyzer. Glass transition temperature and thermal expansion coefficient of LTE coating cyclinder sample were measured using thermal mechanical analyzer. Under different heating rates, changes of viscosity, height, volume with contact angle of LTE coating cyclinder sample were studied using self-made hot-stage microscope. Results show that with the increase of heating rate, sintering temperature, softening temperature, and spherical temperature of LTE coating cyclinder sample decrease. The viscosity is also reduced, which is benefical for coating leveling, suggesting that the 20 ℃/min heating rate is optimum. Height and contact angle of LTE coating cylinder sample begin to enter plateau at the temperature range of 530~550 ℃, indicating that this temperature range should be chosen as the sintering temperature of LTE coating.

Key words: LTE coating, heating rate, viscosity, sintering temperature, characteristic temperature, contact angle

中图分类号:

TG174.4

郭鹏, 叶沈豪, 毛嘉熙, 钱昊, 刘毅, 闫东明. 不同升温速率下低温瓷釉涂层的熔化行为[J]. 硅酸盐通报, 2023, 42(8): 2881-2887.

GUO Peng, YE Shenhao, MAO Jiaxi, QIAN Hao, LIU Yi, YAN Dongming. Melting Behavior of Low-Temperature Enamel Coating at Different Heating Rates[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(8): 2881-2887.

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