Ti–Zr coating on graphite through powder immersion reaction-assisted coating (PIRAC) and its oxidation kinetics at $$T =1000{^{\circ }}\hbox {C}$$ T = 1000 ∘ C
作者： S Suasmoro , F A R Wati , N Muhaimin
DOI: 10.1007/S12034-019-1819-Z
关键词:
摘要: Coating of graphite with a metal alloy Ti–Zr was carried out on block sample; the sample initially dipped in $$\hbox {ZrO}_{2}$$ containing natural starch solution and then proceeded to powder immersion reaction-assisted coating (PIRAC) after drying. Ti 4 wt% iodine used as depositing material, process at $$850{-}950{^{\circ }}\hbox {C}$$ for 10 h. The characterizations include X-ray diffraction, scanning electron microscopy hardness test. thickness is proportional temperature PIRAC process, while percentage Zr inversely treatment. All revealed that coated layer hexagonal crystalline symmetry similar $$\upalpha \hbox {-Ti}$$ . An oxidation kinetic assessment $$1000{^{\circ uncoated shows burns-off mechanism, reveals reaction oxygen produces {TiO}_{2}$$ ; kinetics obey diffusional mechanism.
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