CAJ | 학술논문

基于多齿刀具切削及高温固相烧结铜纤维技术制备具有三维网状结构的多孔金属纤维烧结毡(PMFSS)。通过单向拉伸试验研究纤维长度及自然时效处理对 PMFSS 拉伸性能的影响。结果表明：增大纤维长度有利于提高PMFSS的拉伸强度；选用15 mm中等纤维长度有利于PMFSS获得最优的伸长率，可达到13.5%。经1个月的自然时效处理后，PMFSS的拉伸强度都出现明显下降，但除5 mm短纤维PMFSS的伸长率明显提高，其他PMFSS伸长率基本保持不变。同时，还对PMFSS的断裂形式进行表征与分析。
기우다치도구절삭급고온고상소결동섬유기술제비구유삼유망상결구적다공금속섬유소결전(PMFSS)。통과단향랍신시험연구섬유장도급자연시효처리대 PMFSS 랍신성능적영향。결과표명：증대섬유장도유리우제고PMFSS적랍신강도；선용15 mm중등섬유장도유리우PMFSS획득최우적신장솔，가체도13.5%。경1개월적자연시효처리후，PMFSS적랍신강도도출현명현하강，단제5 mm단섬유PMFSS적신장솔명현제고，기타PMFSS신장솔기본보지불변。동시，환대PMFSS적단렬형식진행표정여분석。
A novel porous metal fiber sintered sheet (PMFSS) with a three-dimensional reticulated structure was fabricated by multi-tooth cutting and high-temperature solid-phase sintering process with copper fibers. A uniaxial tensile test was conducted to investigate the effect of fiber length and natural aging factor on the tensile properties of the PMFSS. Results indicated that, under given stress, the increase of fiber length helped reinforce the tensile strength. The elongation of the PMFSS with medium length fiber of 15 mm exhibited the optimal performance, reaching about 13.5%. After natural aging treatment for a month, the tensile strength of PMFSS significantly decreased, but the change of elongation was negligible except for the one with the shortest fiber length of 5 mm, whose elongation was effectively improved. The morphological fracture features of PMFSSs were also characterized.