【摘要】 采用直流电弧等离子体法,在氢/氩气氛下蒸发高Ni含量的Ni-Ag块体靶材,获得以Ni为主相的复合纳米粉体产物,Ni和Ag元素之间形成各自固溶体相,其中Ni含量为70.54%（质量分数）,纳米粒子产物平均尺寸在30～70 nm范围。将纳米粉体压制成片,其室温电学性能测试结果表明:25 MPa压力下的样品电阻率为5.36×10^-5Ω·cm。利用纳米粉体作为导电组分,配制成液态导电墨水,在聚酰亚胺薄膜基体上绘制导电线路,在Ar气氛下完成烧结处理。烧结样品电学性能测试结果表明:在300℃以上温度,烧结体结构致密,导电性能良好。随温度提高,烧结样品的电阻率逐渐下降,450℃时烧结体的电阻率达1.83×10^-3Ω·cm,明显优于纯Ni纳米粉体墨水的烧结体电阻率。更多还原

【Abstract】 Ni-Ag nanoparticles were prepared by DC arc-discharge plasma method, using the compacted micron-sized powders of Ni and Ag as the raw targets. The content of Ni in Ni-Ag nanoparticles samples was 70.54%（mass fraction）. The particles’ sizes were mainly in range of 30-70 nm. The results indicate that the resistivity of compressed Ni-Ag powders has low resistivity of 5.36×10^-5 Ω·cm. The conductive ink is prepared by using of Ni-Ag nanoparticles（70.54% of Ni） as the additive. An ink line is drew on a polyimide sheet matrix, subsequently dried and sintered at elevated temperatures under protective atmosphere of Ar. The electrical property testing results of sintering samples show dense structure and good conductivity over 300 ℃. It is indicated that the resistivity of the sintered sample declines with the temperature rising, i.e. 1.83×10^-3 Ω·cm at sintering temperature of 450 ℃ which is much lower than that of the ink line of pure Ni nanoparticles.更多还原