摘要
惰性氧化物构成的搪瓷涂层具有与玻璃相似的硅氧网络结构,表现出优异的抗氧化、抗腐蚀性能,但搪瓷的高温软化与本征脆性限制了其在高温环境下长寿命服役的能力。为了促进搪瓷涂层的市场化推广,在分析了影响搪瓷涂层使用寿命的原因及第二相改性机理后,提出4种用于解决搪瓷涂层软化脱落问题的方法,即颗粒增韧、调节热膨胀系数、调节界面稳定性、裂纹自修复,以期为搪瓷涂层在高温腐蚀或热循环冲击条件下的长寿命服役能力研究提供指导。
Enamel coatings composed of inert oxides have a silicon-oxygen network structure similar to that of glass and exhibit excellent resistance to oxidation and corrosion.However,the high temperature softening and intrinsic brittleness of enamel limit the long life service of enamel coatings in high temperature environments.In order to promote the marketization of enamel coatings,after analyzing the reasons affecting the service life of enamel coatings and the second-phase modification mechanism,four methods to solve the problem of enamel coating softening and peeling were put forward,namely,particle toughening,adjustment of thermal expansion coefficient,adjustment of interfacial stability and crack self-repair.It was expected to provide guidance for the research on long life service ability of enamel coatings under high temperature corrosion or thermal cycle impact conditions.
作者
杜撰
陈林
孟国辉
朱昌发
赵鼎
王国强
DU Zhuan;CHEN Lin;MENG Guo-hui;ZHU Chang-fa;ZHAO Ding;WANG Guo-qiang(State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049,China;Xi'an Aerospace Engine Corporation in CASC,Xi'an 710065,China)
出处
《材料保护》
CAS
CSCD
2023年第4期158-168,182,共12页
Materials Protection
基金
国家科技重大专项(2017-Ⅷ-0012-0107)资助。
关键词
搪瓷涂层
高温氧化
颗粒增韧
界面结合
自修复
enamel coating
high temperature oxidation
particle toughening
interface bonding
self-repair
