Characterization of TiC and α-Ti coating on graphite prepared by Powder Immersion Reaction Assisted Coating (PIRAC) Oxidized at 1000°C in Air

6th Asian Physics Symposium

Wati, F.A.R.^1 ; Agustinawati, D.^1 ; Muhaimin, N.^1 ; Suasmoro, S.^1

Dept. of Physics, Sepuluh Nopember Institute of Technology, Surabaya

60111, Indonesia^1

关键词: Argon atmospheres;    Crystalline analysis;    Different treatments;    Diffusion of carbons;    Distribution of element;    Graphite surfaces;    Powder immersion reaction assisted coatings;    Titanium powders;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012041/pdf
DOI  :  10.1088/1742-6596/739/1/012041

来源: IOP

【 摘 要 】

Study of the formation of TiC and α-Ti coating on graphite has been successfully carried out by means PIRAC method. Graphite blocks were immersed into a mixed of titanium powder containing 4 wt% iodine and then proceed at 1000°C for 10 hours in argon atmosphere. Two different treatment of graphite blocks were carried out; with and without dispersion ZrO2in the graphite surface before heat treatment. Characterizations of coated surface were include X-ray diffraction for phase and crystalline analysis, SEM and EDX analysis to determine the topography and distribution of elements in coated film. For sample without ZrO2, as a result of interaction between titanium and graphite, carbon diffusion occurred and TiC coated film were formed. Whereas sample with the dispersant of ZrO2on the graphite surface caused diffusion of carbon into the titanium did not occur, as a result α-Ti were formed. Oxidation test at 1000°C in air showed that TiC and α-Ti coated film underwent oxidation. In both cases TiO2was observed as a results of oxidation.