摘要
钎料合金/陶瓷体系润湿行为研究对陶瓷的钎焊连接具有重要指导意义。目前主要在真空系统中开展润湿性试验,除了常规的座滴法,改良座滴法、滴落法以及液桥过渡法逐渐被采用以便获得更加准确的试验数据。钎料合金在陶瓷表面的润湿过程涉及溶解、扩散、界面吸附和反应等,是一种非常复杂的物理化学现象。根据驱动润湿的本质因素,可将润湿机制分为:溶解驱动润湿、吸附驱动润湿和界面反应驱动润湿。然而由于界面行为的复杂性,往往很难进行严格的划分。根据钎料合金/陶瓷界面行为特点,分别建立了反应控制润湿模型和扩散控制模型来研究体系的铺展动力学。对钎料进行合金化处理和陶瓷表面改性是改善润湿性的常用方法,本文主要从润湿性的表征和测量、润湿机制、铺展动力学模型和改善润湿性措施等方面,综述了钎料合金/陶瓷体系润湿行为研究的进展。
Investigation of the wetting behaviors of the brazed alloy/ceramic system is instructional for the brazing of ceramics.At present,the wetting test is usually conducted in the vacuum furnace.Except the conventional sessile drop method,the modified sessile drop method,dispensed drop method and transferred drop method are developed to acquire more accurate parameters.The wetting of brazing alloy on the ceramic surface involves dissolution,diffusion,interfacial adsorption and reaction,etc.,and is a complex physical and chemical phenomenon.According to the nature of driving wetting,the wetting mechanisms can be divided into three types:dissolution-driving wetting,adsorption-driving wetting,and interfacial reaction-driving wetting.However,owing to the complexity of interfacial reactions,they have ambiguous definitions.The reaction-control wetting model and diffusion-control wetting model are established based on typical interfacial behaviors in the brazed alloy/ceramic system.Alloying and modifying ceramic surfaces are the common methods to improve wettability.This article summarizes the research progress of the wetting behaviors of the brazed alloy/ceramic system from the following aspects:characterization and measurement of wettability,wetting mechanism,spreading kinetic models and measures of improving wettability.
作者
付伟
范振兴
宋晓国
卞红
胡胜鹏
雷玉珍
FU Wei;FAN Zhenxing;SONG Xiaoguo;BIAN Hong;HU Shengpeng;LEI Yuzhen(State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China;School of Materials Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China)
出处
《航空学报》
EI
CAS
CSCD
北大核心
2022年第4期250-264,共15页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(51905125,51775138,U1737205)
山东省“泰山学者”基金(tsqn201812128)
山东省重点研发计划(2019GHY112069)。
关键词
陶瓷
润湿性
铺展动力学
润湿角
润湿机制
ceramics
wettability
spreading kinetics
contact angle
wetting mechanism
