CAJ | 학술논문

采用压汞法对由热压成型法自行制备的微孔陶瓷管孔隙结构进行研究，得到陶瓷管膜的孔隙分布。采用自行研制的三相界面测定仪测量了常见的低温金属锡与刚玉陶瓷管膜在240~640℃内的表观润湿现象，在该温度范围内锡与陶瓷管膜的接触角均大于150°，两者润湿性很差。依据图像处理技术和理论计算，提出一种测量多孔表面液滴渗透速度的方法，推导出液滴向陶瓷管微孔内渗透的速度方程。并以油滴进行实验，实验发现渗透过程中液滴首先会进行铺展，并且一段时间内维持其铺展半径直至最终完全渗入。
채용압홍법대유열압성형법자행제비적미공도자관공극결구진행연구，득도도자관막적공극분포。채용자행연제적삼상계면측정의측량료상견적저온금속석여강옥도자관막재240~640℃내적표관윤습현상，재해온도범위내석여도자관막적접촉각균대우150°，량자윤습성흔차。의거도상처리기술화이론계산，제출일충측량다공표면액적삼투속도적방법，추도출액적향도자관미공내삼투적속도방정。병이유적진행실험，실험발현삼투과정중액적수선회진행포전，병차일단시간내유지기포전반경직지최종완전삼입。
Pore structure of porous ceramic tube prepared by the hot forming method is studied by mercury method to obtain pore distribution of ceramic membrane. Self-developed three-phase interface analyzer is used to measure the wetting phenomena of tin which is one of the low melting point metals on the alumina ceramic tube membrane at the temperature from 240℃to 640℃. It is found that the contact angle of tin on ceramic tube membrane at the range of temperature is greater than 150 °, and the wettability of the both is poor. Based on image processing technology and theoretical calculations, a method to measure penetration rate of droplets on porous surface is proposed and a velocity equation of the droplets which penetrate to the porous ceramic tube is deduced. The oil droplet is tested to find out that the droplet spreads firstly during infiltration process and it maintains its spreading radius for a period of time until it fully penetrates into ceramic tube membrane.