Corrigendum to “Contamination during the high-energy milling of atomized copper powder and its effects on spark plasma sintering” [Powder Technol. 275 (2015) 51–59]

Spark Plasma Sintering of Copper Matrix Composites Reinforced with TiB2 Particles

“…This can also be associated with the incomplete decomposition of stearic acid during SPS. In previous studies [43], it has been demonstrated that the decomposition of stearic acid is controlled by the particle size and morphology of the milled particles. Generally, the decomposition of stearic acid occurs at different The relative density decreases prolonging milling time, due to the strain and dispersion hardening to which powders are exposed.…”

“…This can also be associated with the incomplete decomposition of stearic acid during SPS. In previous studies [43], it has been demonstrated that the decomposition of stearic acid is controlled by the particle size and morphology of the milled particles. Generally, the decomposition of stearic acid occurs at different temperatures 150, 300 and 450 • C, correlated with different gas emissions: 100-1000 • C, continuous water evaporation; 300 • C, water evaporation and the production of CO and especially CO 2 ; 450 • C, H 2 production [43].…”

“…In previous studies [43], it has been demonstrated that the decomposition of stearic acid is controlled by the particle size and morphology of the milled particles. Generally, the decomposition of stearic acid occurs at different temperatures 150, 300 and 450 • C, correlated with different gas emissions: 100-1000 • C, continuous water evaporation; 300 • C, water evaporation and the production of CO and especially CO 2 ; 450 • C, H 2 production [43]. By the way, when particle size increases, the decomposition of PCA is shifted to a higher temperature because stearic acid, due to the intense overlapping of the particles, is constrained between them and its reduction is delayed and limited.…”

“…A systematic investigation of chemical analysis evolution during milling was not carried out for present MMCs. Indeed, the authors made it for pure Cu [43], showing that O and C contaminations occur due to stearic acid used as a partition control agent. After 200 min milling, the initial O (0.14 wt%) and C (0.01 wt%) content in AT-Cu (Table 1) increased up to 0.84 wt% and 0.34 wt%, respectively.…”

“…By the way, when particle size increases, the decomposition of PCA is shifted to a higher temperature because stearic acid, due to the intense overlapping of the particles, is constrained between them and its reduction is delayed and limited. The larger and more compacted powders hinder the correct and free decomposition of stearic acid before the application of the SPS load, leading to the decrease of relative density increasing milling time [41,43]. The application of the load at 700 • C hinders any delayed gas release and it is responsible for the lower relative density of MMC-240 compared to the other MMCs.…”