模型方程法在针状球形尿素作为空间载体制备多孔铜中的应用

IF 1.9 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Powder Metallurgy Pub Date : 2023-02-10 DOI:10.1080/00325899.2023.2177015

X. Jian, L. Xin, Cai Yunhe, Xingting Li, Yongqiang Lin, Jintao Xi

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引用次数: 0

摘要

研究了模型方程法在多孔铜制备中的测量和预测函数。采用针状球形尿素作为空间保持剂，体积含量在10% ~ 80%之间。采用绿色压坯一步热处理工艺制备多孔铜。提出了一种测定多孔铜外形尺寸均匀性的判据。结果表明:多孔铜的质量遵循守恒定律，多孔铜的高度随间隔物含量的增加而减小，而孔径则无规律。模型方程法计算的多孔铜孔隙率与质量体积法计算的孔隙率相等。所得的描述多孔铜孔隙度与间隔剂含量关系的理论公式与经验公式相吻合。结果表明，模型方程法的测量函数比预测函数更容易发挥作用。

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The application of the model equation method in the preparation of porous copper by using needlelike and spherical carbamide as a space holder

ABSTRACT The measurement and predictive functions of the model equation method in the preparation of porous copper were studied. Needlelike and spherical carbamide was used as a space holder with volume content between 10 and 80%. One step of heat treatment for green compacts was applied to fabricate porous copper. A criterion for determining the uniformity of external dimensions of porous copper was proposed. The results showed that the mass follows the law of conservation and the height of porous copper decreased as the increase of spacer content while there was no regularity for the diameter. The porosity of porous copper calculated by the model equation method was equal to those of by the mass volume method. The theoretical formula obtained to describe the relationship between porosity and spacer content of porous copper intersects with the empirical formula. The results indicated that the measurement function of the model equation method was easier to play than the prediction function.

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来源期刊

Powder Metallurgy 工程技术-冶金工程

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Powder Metallurgy is an international journal publishing peer-reviewed original research on the science and practice of powder metallurgy and particulate technology. Coverage includes metallic particulate materials, PM tool materials, hard materials, composites, and novel powder based materials.