Open Access
Table 1
Weight chemical composition and main phases of the coatings, PTAW = Plasma Transferred Arc Welding and LC = Laser Cladding.
| Hardfacing alloy | Process | Base | Cr | C | Si | B | Other | Main phases |
|---|---|---|---|---|---|---|---|---|
| CoCrW (eq. Stellite 6®) |
PTAW | Co | 28.3 | 1.1 | 1.1 | 0.0025 | W: 4.7 | Co-Cr solid solution dendrites + interdendritic [Co + Cr7C3] eutectic with primary tungsten and chromium carbides |
| LC | Co | 28.1 | 1.2 | 1.3 | / | W: 4.8 | Co-Cr solid solution dendrites + interdendritic [Co + Cr7C3] eutectic with primary tungsten and chromium carbides | |
| NiCrBSi A | PTAW | Ni | 12.7 | 0.4 | 3.4 | 2.1 | / | Ni solid solution dendrites with binary eutectic [γ-Ni + Ni3B] and chromium borides and carbides |
| LC | Ni | 12.6 | 0.3 | 3.5 | 2.2 | / | Ni solid solution dendrites with binary eutectic [γ-Ni + Ni3B] and chromium borides and carbides | |
| NiCrBSi B | PTAW | Ni | 12.7 | 0.4 | 3.3 | 1.8 | / | Ni solid solution dendrites with binary eutectic [γ-Ni + Ni3B] and chromium borides and carbides |
| NiMoCrSi | PTAW | Ni | 15.5 | 0.04 | 3.4 | / | Mo: 32.7 | Ni solid solution + Laves Phase Mo-(Ni-Cr)-Si |
| LC | Ni | 16.4 | 0.04 | 3.7 | / | Mo: 32.8 | Ni solid solution + Laves Phase Mo-(Ni-Cr)-Si | |
| NiCrSiWB | PTAW | Ni | 9.6 | 0.7 | 5.0 | 0.5 | W: 1.9 | Ni solid solution dendrites with binary eutectic [γ-Ni + Ni3Si] and nickel borides and chromium carbides |
| 316L(N) | / | Fe | 17.4 | 0.03 | 0.32 | / | Ni: 12.2 Mo: 2.6 |
γ-Fe |
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