涂层厚度和填料含量对陶瓷前驱体基高辐射涂层性能影响
发布时间：2018-08-16 12:23
【摘要】：以氧化铈和碳化硼为高辐射填料,以陶瓷前驱体树脂为涂层成膜物,制备了不同厚度、不同填料体积含量的高辐射涂层,测试了涂层室温和1100 K发射率以及其抗热震性,研究了涂层厚度和填料体积含量对其发射率和抗热震性能影响。结果显示,该涂层发射率随涂层厚度的增加而迅速增加,然后趋于稳定,具有稳定发射率的最小涂层厚度约为50μm,涂层1100 K高温发射率≥0.90。填料体积含量50vol.%时,涂层高温下结构完整性好且抗氧化能力强,经过20次1100 K-室温的抗热震循环,涂层无剥离和脱落。
[Abstract]:Using cerium oxide and boron carbide as high radiation filler and ceramic precursor resin as coating film material, high radiation coating with different thickness and volume content of filler was prepared. The emissivity and thermal shock resistance of the coating at room temperature and 1100 K were measured. The effects of coating thickness and filler volume content on emissivity and thermal shock resistance were studied. The results show that the emissivity of the coating increases rapidly with the increase of the coating thickness, and then tends to be stable. The minimum coating thickness with stable emissivity is about 50 渭 m, and the high temperature emissivity of the coating at 1100 K is 鈮，
本文编号：2185972
[Abstract]:Using cerium oxide and boron carbide as high radiation filler and ceramic precursor resin as coating film material, high radiation coating with different thickness and volume content of filler was prepared. The emissivity and thermal shock resistance of the coating at room temperature and 1100 K were measured. The effects of coating thickness and filler volume content on emissivity and thermal shock resistance were studied. The results show that the emissivity of the coating increases rapidly with the increase of the coating thickness, and then tends to be stable. The minimum coating thickness with stable emissivity is about 50 渭 m, and the high temperature emissivity of the coating at 1100 K is 鈮，
本文编号：2185972
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