摘要
采用气流挟沙喷射法对钢化玻璃和普通玻璃在不同角度下进行冲蚀试验,利用激光共聚焦显微镜(LSCM)和扫描电子显微镜(SEM)表征玻璃表面微观结构和形貌的变化,对比研究了冲蚀角度对建筑用钢化玻璃和普通玻璃喷砂磨损粗糙度和损伤形貌的影响和机制。研究结果表明:随着冲蚀角度的增加,钢化玻璃和浮法玻璃的冲蚀率均逐渐增大,冲蚀损伤区域深度和宽度也逐渐增大,损伤区域形状由椭圆向圆形转变,冲蚀剖面轮廓由抛物线形向圆锥形转变。钢化玻璃的粗糙度随冲蚀角度增加逐渐增大,浮法玻璃粗糙度随冲蚀角度增加先增后减,冲蚀角度为45°时达到最大。相同冲蚀角度下,浮法玻璃的损伤程度远大于钢化玻璃。当冲蚀角度为15°时,材料的损伤由沙粒微切削作用引起,材料表面粗糙度较小;冲蚀角度为45°时,材料的损伤由沙粒切削和裂纹扩展共同引起,沙粒铲削作用明显,材料表面粗糙度大;冲蚀角度为90°时,材料的损伤由裂纹叠加引起,钢化玻璃的粗糙度达到最大而浮法玻璃的粗糙度达到最小。冲蚀角度为15°和45°时,浮法玻璃表面粗糙度参数均大于钢化玻璃,冲蚀角度为90°时,钢化玻璃粗糙度评价参数均大于浮法玻璃。钢化玻璃表面轮廓微观不平度平均间距在冲蚀角度15°时达到最大,在冲蚀角度45°时达到最小;浮法玻璃在冲蚀角度15°时达到最大,在冲蚀角度45°时达到最小。
To research the effect of erosion angle on the roughness of glass material,erosion tests of tempered glass and float glass were carried out by air flow sand-carrying method at different angles.The changes of surface microstructure and morphology of glass were characterized by laser confocal microscopy(LSCM)and scanning electron microscopy(SEM).The effect of sandblasting angle on the wear roughness and damage morphology of the tempered glass and float glass was studied.The results show that with the increase of erosion angle,the erosion rates of tempered glass and float glass increase,the depth and width of erosion damage area increase gradually,the shape of damage area changes from ellipse to circle,and the erosion profile changes from parabola to cone.The roughness of tempered glass increases gradually with the increase of erosion angle,and the roughness of float glass increases first and then decreases with the increase of attack angle,reaching its maximum at 45°.At the same erosion angle,the damage degree of float glass is much greater than that of tempered glass.At a low erosion angle(15°),the damage of material is caused by sand micro-cutting and the roughness of material is small;at 45°,the damage of material is caused by both sand cutting and crack propagation,and the relieving effect is obvious and the roughness is large;at a high erosion angle(90°),the mass loss is caused by crack superposition,and the roughness of tempered glass reaches the maximum,the roughness of float glass is less than that of low erosion angle,and the roughness of float glass is the smallest.The surface roughness parameters of float glass are larger than that of toughened glass at the erosion angle of 15°and 45°.The roughness parameters of toughened glass are larger than that of float glass at the erosion angle of 90°.The average spacing of surface roughness of tempered glass meets its largest at 15°,followed by 90°and 45°,while that of float glass meets its smallest at 45°,follow by 90°and 15°.The research results can provide a theoretical basis for the protection of glass materials in sandy areas.
作者
郝贠洪
范宝鑫
李慧
郭鑫
吴日根
HAO Yunhong;FAN Baoxin;LI Hui;GUO Xin;WU Rigen(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of Civil Engineering Structure and Mechanics,Hohhot 010051,China;Inner Mongolia Engineering Research Center for Building Inspection,Identification and Safety Assessment,Hohhot 010051,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2021年第3期407-414,共8页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(11662012,11862022)
内蒙古自治区草原英才资助项目
内蒙古自治区自然科学基金面上资助项目(2018MS05047)
内蒙古高校青年科技英才支持计划资助项目(NJYT-17-A09)。
关键词
玻璃
脆性冲蚀
损伤机理
三维轮廓
表面粗糙度
Glass
Brittle erosion
Damage mechanism
Three-dimensional profile
Surface roughness
作者简介
郝贠洪(1977-),男,博士,教授,主要研究方向:区域特殊环境下工程结构和材料耐久性损伤灾变机理及防护关键技术。E-mail:13947133205@163.com;通讯作者:范宝鑫(1993-)男,硕士,主要研究方向:区域特殊环境下材料耐久性损伤灾变机理及防护关键技术。E-mail995469602@qq.com。
