J0404-2-2 Pbフリーはんだ対応チップ用金属ガラス複合材料の設計と特性評価([J0404-2]知的材料・構造システム(2):新機能材料II)

Abstract

Developments of Pb-free solder-tip components which have excellent fracture strength properties and corrosion resistance in comparison with those of conventional Cu-based tips are required. In the present study, we fabricated sintered metallic glass composite materials combined with carbon nanotubes (CNTs) for Pb-free solder tip components, and properties of the sintered composite materials were evaluated. CNTs were added to improve thermal properties. Ni particles were also added to the composite materials to improve solder wettability. Bending strength of aNi-added and CNT-free composite material was higher than that of a composite material without Ni and CNT additions. Bending strength of a 0.5 wt.% CNT added composite material was also higher than that of the composite material without Ni and CNT additions. However, the bending strength was decreased by 1.0 wt.% CNT addition. Through the fracture surface observations, it was deduced that suppression of segregation of CNTs will be effective in improving fracture strength properties.