Thermal property evolution of metal based thermal barrier coatings with heat treatments
Thermal property evolution of metal based thermal barrier coatings with heat treatments
复制标题
热处理金属基热障涂层的热性能演变
DOI：
10.1007/s10853-007-1772-x
复制
发表时间：
2007
影响因子：
4.5
通讯作者：
C. Moreau
中科院分区：
文献类型：
--
作者：
Dong;F. Gitzhofer;C. Moreau
由于陶瓷本身的脆性，预测陶瓷热障涂层(TBCs)的使用寿命是很困难的。因此，金属基热障涂层的研究应运而生，以挑战目前陶瓷基热障涂层存在的问题，创造新一代热障涂层。本工作采用高频感应等离子喷涂(IPS)铁基纳米合金粉末制备了内燃机用纳米/非晶结构MBTB。为了研究涂层的热稳定性，采用不同的喷涂工艺参数和高达850℃的热处理温度，采用IPS法制备了涂层。用激光闪光法测量了MBTBCs的热扩散率(α)。还测量了MBTB的密度(ρ)和比热(Cp)，以计算导热系数(k=αρCp)。
Predicting “in-service” lifetime of ceramic thermal barrier coatings (TBCs) is difficult due to the inherent brittle nature of ceramics used. Therefore, the study of metal-based thermal barrier coatings (MBTBCs) has been initiated to challenge the current problems of ceramic-based TBCs (CBTBCs) and create a new generation of thermal barrier coatings (TBCs). In this work, nano/amorphous structured MBTBCs, for use in internal combustion engines, have been produced using high frequency induction plasma spraying (IPS) of iron-based nanostructured alloy powders. Coatings were deposited by IPS using various spray parameters and heat treated up to 850 °C to study the thermal stability of the coating. The thermal diffusivity (α) properties of MBTBCs were measured using a laser flash method. Density (ρ) and specific heat (Cp) of the MBTBCs were also measured for calculating thermal conductivity (k = αρCp).