| 탄탈륨 질화물(Ta3N5)의 적색도 향상에 미치는 NH4Cl의 영향 |
| 박은영, 피재환, 김유진, 조우석 |
| 한국세라믹기술원 이천분원 도자세라믹센터 |
| Effect of By-product (NH4Cl) on the Improvement of the Red Color Tone of Tantalum Nitride (Ta3N5) |
| Eun-Young Park, Jae-Hwan Pee, Yoo-Jin Kim, Woo-Seok Cho |
| Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology |
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| ABSTRACT |
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The Tantalum nitride has attracted wide at attention as issues related to the toxicity of Cd-related materials. But in the titration process of Ta$Cl_5$ solution with $NH_4$OH, $NH_4$Cl, as a by product, was remained in the prepared Tantalum precursor. The tantalum precursor with $NH_4$Cl was nitrided by ammonolysis. The red color tone of $Ta_3N_5$ was reduced by the residual $NH_4$Cl reduce. Therefore, amorphous Tantalum precursor was prepared by filtering process with as hydrous ethanol to remove the $NH_4$Cl. In the case of using Tantalum precursor without $NH_4$Cl, we successfully synthesized the Tantalum nitride with good red color. The value of red color tone was improved from $a^*$=36.8 to $a^*$=53.0. The synthesized powder was characterized by XRD, SEM, the Nitrogen / Oxygen Determinator, TG-DTA, and the CIE $L^*a^*b^*$ colorimeter. |
| Key words:
$Ta_3N_5$, Red color tone, $NH_4Cl$, Tantalum precursor, Tantalum chloride |
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