Cold spray deposition of WC–17 and 12Co cermets onto aluminum

Mechanical property and wear performance dependence on processing condition for cold-sprayed WC-(nanoWC-Co)

“…However, some ␤-Co phase transformed to ␣-Co phase during the cold spray deposition, resulting in ␣+␤-Co dual-phase structure in the cold-sprayed coatings. This is evidently different from most reported literature on cold-sprayed WC-Co coatings [33][34][35][36]. Fig.…”

“…It is interestingly found that Co binder phase transformation from ␤-Co to ␣-Co occurs during cold spraying. However, thermodynamically stable ␤-Co rather than metastable ␣-Co is often found in cold-sprayed WC-Co cermet coatings in literature [33][34][35][36], since close-packed hexagonal (cph) ␤-Co is thermodynamically stable and face-centered cubic (fcc) ␣-Co is metastable at room temperature. Since fcc ␣-Co is a metastable phase, it transforms back to cph ␤-Co after annealing treatment, as shown in Fig.…”

Structure Property Relationship of Suspension Thermally Sprayed WC-Co Nanocomposite Coatings

“…This powder has previously been used in cold-spraying of WC-Co coatings [27]. In order to adapt the particle size for suspension preparation, the powder was milled in a planetary ball mill and the resulting nanocomposite powder is shown in Figure 1(b,c).…”

Beneficial effects of laser irradiation on the deposition process of diamond/Ni60 composite coating with cold spray

“…The metal powders range in particle size from 5 ∼ 50 m and are accelerated by a high-velocity jet stream that is generated through the expansion of a pressurized, preheated nitrogen or air in a vonverging-diverging nozzle to exceed critical plastic deformation velocity [13,14]. Currently, cold spray is mainly employed to deposit relatively soft, heat sensitive and oxidation sensitive materials such as Al, Cu, Ti, 316, Ni25, and amorphous material, WC-Co, Ni-diamond and so on [15][16][17][18][19][20][21], but it is difficult to deposit high hardness particles such as Stellite 6, Ni60, diamond, WC and metal ceramic material, etc., by cold spray [22].…”