摘要
本文研究了由Al2O3粉和Cu粉组成的混合粉末体系的室温压制性能。测定了压坯密度与外加压力和混合粉末中陶瓷含量的关系。然后将试验数据代入由本文作者推导的含有三个参数的粉体的新压制方程之中,采用MATLAB软件求解超限定方程组,计算出方程中所含的三个参数的值。定量研究了这三个参数与体系中陶瓷含量的关系,然后把这三个参数与材料的特性联系起来,以此展示了这三个参数的物理意义,并确定了占主导地位的成形机制,进一步验证了该方程的科学性和适用性。
Compaetibility of mixed powders composed of Al2O3 powder and Cu powder at room temperature has been investigated. The effect of external pressure and ceramic content of the system on green density of compact has been displayed. The experimental data were substituted into a new compaction equation for powder materials, which includes three parameters, The values of the parameters were calculated by MATLAB software. The relationship between the values of the parameters and the ceramic content of the system was studied quantitatively. Then, the parameters were related to the characteristics of the materials. Based on these results, the physical concepts of the three parameters have been displayed, and the dominant mechanism of the process has been determined. On all accounts the validity and applicability of the euuation have been verified.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2006年第1期3-7,共5页
Powder Metallurgy Technology
基金
中国国家自然科学基金资助项目(批准号50271003)
中国航空基础科学基金资助项目(项目编号03H51024)
关键词
压制理论
粉体压制方程
压制性能
theory of compaction
compaction equation for powder materials
compactibility
