气动喷砂工艺对304不锈钢表面润湿效应的影响  

Influences of Pneumatic Sandblasting Process on Wetting Effect of 304 Stainless Steel Surface

作　　者：李晶[1] 姜虹宇 杜锋[2] 刘利强 赵世才[1] 

机构地区：[1]长春理工大学机电工程学院,长春130022 [2]装甲兵技术学院机械工程系,长春130117

出　　处：《中国表面工程》2017年第5期95-101,共7页China Surface Engineering

基　　金：国家自然科学基金(51505039);吉林省科技发展计划(20150204018GX)~~

摘　　要：针对仿生润湿性研究中喷砂工艺常作为获取粗糙表面方法被学者使用的现状,为喷砂处理基底表面提供数据基础,文中利用试验优化方法,分析不同参数下喷砂工艺对304不锈钢表面润湿性能的影响。通过扫描电子显微镜(SEM)、激光共聚焦显微镜(LSCM)和X射线衍射仪(XRD)分析喷砂表面的微观形态和化学成分,使用接触角测试仪(OCA)测试分析喷砂试样表面润湿特性。结果表明:在优化喷砂工艺参数下(砂粒尺寸180μm;喷砂压力0.6~0.65 MPa;喷砂时间1 min),能够在304不锈钢基底表面获得粗糙结构,使润湿性能由亲水性向疏水性发生转变,获得静态接触角达到120°,动态滞后角降至13.9°的特性。In the research of bionic wettability, as a method of obtaining rough surface, the sandblasting process is often used by scholars to provide data base of the sandblasted substrate surface. With the experiment optimization method, researchers analyzed the wettability influence of 304 stainless steel surface, which was sandblasted with different parameters. The microstructure and the chemical composition of the sandblasted surface were analyzed by scanning electron microscope （SEM）, laser scanning confocal microscope （LSCM） and X-ray diffraction （XRD）. The wettability of sample surface sandblasted was tested by contact angle system （OCA）. The results show that under the best sandblasting process optimized parameters at the sand size of 180 μm, the sandblasting pressure of 0.6 MPa to 0.65 MPa, and the sandblasting time of 1 rain, the rough structure can be obtained on the 304 stainless steel surface and the wettability surface is converted from hydrophilic to hydrophobic. The static contact angle attains 120° and the dynamic lag angle is reduced to 13.9°.

关 键 词：气动喷砂 表面形貌 接触角 润滑效应 

分 类 号：TG668[金属学及工艺—金属切削加工及机床]