溶胶——凝胶Al_2O_3涂层工程陶瓷表面改性的效果分析  

Effects Analysis of Surface Modification for Engineering Ceramics by Sol-gel Al_2O_3 Coating

作　　者：张勤俭[1] 张建华[2] 李敏[3] 毕进子[2] 

机构地区：[1]北京市电加工研究所,北京100083 [2]山东大学机械工程学院,济南250061 [3]国家电力公司电力建设研究所,北京100055

出　　处：《应用基础与工程科学学报》2001年第4期339-342,共4页Journal of Basic Science and Engineering

基　　金：国家自然科学基金资助项目 ( 5 0 0 75 0 4 8)

摘　　要：应用数学方法分析了Al2 O3涂层工程陶瓷抗弯强度的实验结果 .叙述了用有限个试样的实验结果估计工程陶瓷总体抗弯强度的原理和方法 ,对得出的分布特征参数的物理意义进行了探讨 ,发现置信边值强度 μ左 可以反映材料总体抗弯强度的大小 ,而均方差置信区间右边值 μ右 则可以表征材料性能的分散程度 ,使用这 2个参数可以更可靠地评价工程陶瓷的强度水平 ,可作为材料强度性能的评价指标 .并用该强度指标分析了溶胶 凝胶Al2Experimental results of bending strength for Al 2O 3 coated engineering ceramics were analyzed using mathematical method. The principle and method for estimating general bending strength of engineering ceramics using results obtained from a limited quantity of specimens were described and the physical significance of the distribution characteristic parameters was discussed. It was found that the left boundary value μ 左 of confidence strength intervals presents the average value of overall bending strength and the right boundary value μ 右 of mean square deviation characterizes the dispersal level of material strength. These two parameters illustrate the strength level of engineering ceramics reliably and can be used as the index to evaluate the strength of materials. The effects of the surface modification for engineering ceramics were also analyzed in this paper.

关 键 词：边值 AL2O3涂层 溶胶-凝胶 应用数学 总体 置信区间 估计 工程陶瓷 表面改性 并用 

分 类 号：O643.3[理学—物理化学] TQ174[理学—化学]