【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Al2 O3涂层对工程陶瓷表面改性的效果更多还原

【Abstract】 Experimental 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.更多还原