摘要
通过模压法结合添加造孔剂法成功制备出多孔陶瓷材料,采用JTZB吸声系数测试系统测试多孔陶瓷的吸声系数并计算出平均吸声系数。以样品厚度、孔隙率、孔径大小和空腔深度为四个因素,每个因素取三个水平,选用正交表优化多孔陶瓷吸声性能。结果表明:四个因素优水平组合是样品厚度为25 mm、孔隙率为73.5%、孔径大小为4-5 mm、背后空腔厚度为20 mm,此时多孔陶瓷在中低频区吸声性能最优;通过极差分析找到了影响多孔陶瓷吸声性能的主要因素和次要因素。
Porous ceramics were successfully prepared by conventional molding with pore forming agents. Using JTZB absorption coefficient test system the sound absorption coefficient of porous ceramics was tested and the average sound absorption coefficient was calculated. The sound absorption performance of porous ceramic was optimized by an orthogonal experiment table with four factors and three levels of values including thickness, porosity, aperture size and the depth of cavity. Results show that porous ceramics have excellent sound absorption performance at the low and intermediate frequencies while the sample thickness is 25 mm, the porosity is 73.5%, the aperture size is 4-5 mm,and the cavity thickness is 20 mm. The primary and secondary factors influencing the sound absorption performance of porous ceramics were acquired by the method of variance analysis.
作者
孙进兴
刘培生
陈斌
SUN Jinxing;LIU Peisheng;CHEN Bin(Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China)
出处
《陶瓷学报》
CAS
北大核心
2016年第4期383-388,共6页
Journal of Ceramics
基金
北师大校测试基金(C16)支持
关键词
多孔陶瓷
平均吸声系数
孔隙率
正交试验
porous ceramic
average sound absorption coefficient
porosity
orthogonal experiment
