Sintering formation of oriented linear cutting copper fibers

定向切削铜纤维烧结成形（英文）

The formation mechanism of oriented linear cutting copper sintered felt was analyzed. The influences of sintering temperature, sintering atmosphere and sintering time on the sintering formation were investigated. And the tensile mechanical properties of sintering fibers under different sintering conditions were also analyzed. The results indicate that the formation of sintered necks in the contacted area due to the materials migration of microstructures on the surfaces of fibers promotes the tight connection of oriented linear cutting copper fibers. It is also found that both sintering temperature and sintering atmosphere show important effects on the sintering formation while the influence of sintering time is not so obvious. Sintering at 800 °C for 60 min under low temperature reduction can produce sintered necks to make fibers tightly connect together and maintain the coarse microstructure on the surface of fibers, and the best tensile mechanical property can be obtained as well.

分析定向切削铜纤维烧结载体的成形机理,研究烧结温度、烧结氛围和烧结时间对烧结成形的影响,并且分析不同烧结条件下烧结纤维的拉伸力学性能。结果表明,烧结温度和烧结氛围对烧结成形具有重要影响,而烧结时间的影响不是特别显著。在低温还原氛围和800°C下烧结60 min,可以形成烧结颈使得纤维之间紧紧连结在一起,并且在纤维表面形成粗糙的微结构,同时可以获得最佳的拉伸力学性能。