摘要
采用空心球法制备平均孔径约3mm、壁厚约0.1mm的K405合金空心球泡沫。首先在聚苯乙烯球上涂覆粉浆制备湿球,将其按体心立方结构排布,随后在真空条件下将堆跺好的球坯在300℃保温40min分解有机物,在1150℃保温150min烧结。制备的K405合金空心球泡沫的密度分别为0.987,0.999和1.085g/cm3;压缩试验结果表明:该泡沫试样的变形行为基本一致,屈服强度大于25MPa。
K405 alloy hollow sphere foams with average aperture about 3mm and about 0.1mm wall thickness are fabricated by hollow sphere method. Firstly the wet spheres which were formed as powder shells from slurries by coating polystyrene cores, were arranged in the body-centered cubic （BCC） way. Subsequently, the spheres stacks were heat-treated in vacuum at 300 ℃ for 40 min to decompose the organic materials, sintered at 1150 ℃ for 150 min. The densities of the finished K405 alloy hollow sphere foams are 0.987, 0.999 and 1.085 g/cm^3 respectively. The results of compressive tests show that the deformation behaviors of K405 foam specimens are almost the same. The yield strengths are higher than 25 MPa.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第1期135-138,共4页
Rare Metal Materials and Engineering
