Optimization of Synthesis Conditions for Improving Ti3AlC2 MAX Phase Using Titanium Scraps

Taeheon Kim; Jae-Won Lim

doi:10.7844/kirr.2024.33.1.22

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2024 Vol.33, Issue 1 Preview Page Next Page

Optimization of Synthesis Conditions for Improving Ti₃AlC₂ MAX Phase Using Titanium Scraps 타이타늄 스크랩 활용 Ti₃AlC₂ MAX 상분율 향상을 위한 합성 조건 최적화

28 February 2024. pp. 22-30

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Abstract

To synthesize the Ti₃AlC₂ MAX phase, a crucial precursor for generating the two-dimensional material MXene, the use of Ti scrap as an initial material is an economically feasible approach. This study aims to optimize the synthesis conditions for the phase fraction of the Ti₃AlC₂ MAX phase utilizing Ti scrap as the Ti source. The deoxidation of Ti powders, prepared through the hydrogenation-dehydrogenation process from Ti scrap, was effectively accomplished using the deoxidation in solid-state (DOSS) process. The optimal synthesis conditions were established by blending DOSS-Ti, Al, and graphite powders with particle sizes ranging from 25 ~ 32 μm in a molar ratio of 3:1.1:2. The resulting phase fractions were as follows: Ti₃AlC₂ at 97.25 wt.%, TiC at 0.93 wt.%, and Al₃Ti at 1.82 wt.%. Furthermore, the oxygen content of the Ti₃AlC₂ MAX powder, spanning from 25 ~ 45 μm, was measured at 4,210 ppm.

Keywords

MAX phase

MXene

Ti₃AlC₂

Scrap

Deoxidation

2차원 물질 MXene의 전구체로 사용되는 Ti₃AlC₂ MAX 상 합성을 위해, 출발물질로써 타이타늄 (Ti) 스크랩을 활용하는 것은 경제적인 접근이 될 수 있다. 본 연구는 Ti 스크랩을 활용하여 Ti₃AlC₂ MAX상의 상분율 향상을 위한 합성 조건의 최적화를 수행하였다. Ti 스크랩으로부터 수소화-탈수소화(hydrogenation-dehydrogenation, HDH) 공정에 의해 제조된 Ti 분말의 산소 함량은 고상탈산(Deoxidation in solid state, DOSS) 공정을 통하여 효과적으로 감소되었다. 최적 합성 조건은 25 ~ 32 μm의 DOSS-Ti, Al, graphite 분말을 3:1.1:2의 몰 비율로 혼합하여 합성되었다. 이 때의 Ti₃AlC₂, TiC 및 Al₃Ti의 상분율은 각각 97.25%, 0.93%, 1.82%로 나타났으며, 25 ~ 45 μm의 Ti₃AlC₂ MAX 분말의 산소 함량은 4,210 ppm으로 확인되었다.

키워드

맥스

맥신

Ti₃AlC₂

탈산

References

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 33
No :1
Pages :22-30
Received Date : 2023-12-08
Revised Date : 2024-01-05
Accepted Date : 2024-01-09
DOI :https://doi.org/10.7844/kirr.2024.33.1.22

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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