High-temperature shock consolidation of diamond powders using converging underwater shock wave

Characterization of fine-grained W–10wt.% Cu composite fabricated by hot-shock consolidation

“…Besides preheating powders, the underwater shock wave has been considered as an effective way to eliminate the cracks [24]. Utilizing preheating of powders and underwater shock wave, even the diamond powders and c-BN powders can be consolidated [25][26][27][28]. For most of these researches, the powders were preheated by an external electric furnace, which was removed by a complex mechanical structure after the preheating process, then the preheating rate is less than 10°C/min, much lower than the rate of 10°C/s for chemical furnace utilized in this work.…”

Chemical furnace for preheating in dynamic consolidation experiments

“…Thus, preheating for shock-induced sintering of diamond and boron nitride powders in flat ampoules reached a temperature of 700 • C with impact velocities of 2 km/sec and pulse pressures of ≈50 GPa [6]. In [7], flat ampoules were charged by an HE charge with detonation velocities up to 7.5 km/sec through a water layer preventing heat transfer between the HE and the heated ampoule but simultaneously decreasing shock pressures in the specimen by several times as compared to detonation pressure. The maximum preheating temperature was 750 • C. Flat ampoules with an operating range of preheating up to 1100 • C and an explosive generator of a plane shock wave were developed for hot consolidation at the Center of High Dynamic Pressures of the Institute of Physicotechnical and Radiotechnical Measurements in 1973Measurements in -1978.…”

Effects of sintering temperature on microstructure and property evolution of Fe81Cu2Nb3Si14 soft magnetic materials fabricated from amorphous melt-spun ribbons by spark plasma sintering technique

“…In order to overcome this limitation, bulk amorphous alloys fabricated by powder metallurgy process using the amorphous alloy powders should be a good alternative. A few investigations on this technique such as dynamic compaction by explosion, rolling, hot pressing, equal channel angular extrusion and spark plasma sintering (SPS) have been reported in recent years [5][6][7][8][9][10]. Among the different consolidation techniques, SPS has been recognized as the most promising technique to obtain samples with desired microstructure and properties as well as high density.…”