Contact formation of pulsed hot pressing powders geterokomponent systems Cu—Ni and Ag—Ni


I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #18


An original method for determination of contact quality in geterokomponent materials is proposed. This method based on an analysis of cracks propagation in the interface. The absolute values of crack resistance are quantitative indicators of the quality contact, and the direction of the crack propagation determines the weakest structural element in the contact matrix. The investigations of the influence of impulse hot pressing temperature on the quality of contact in geterokomponent system Cu—Ni, Ag—Ni showed that in both systems the quality of contact increases considerably with rise temperature. High-quality contact for Cu—Ni system is created at 820оC, and for system Ag—Ni —730оC. Full text download