Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of By-product (NH4Cl) on the Improvement of the Red Color Tone of Tantalum Nitride (Ta3N5)

탄탈륨 질화물(Ta3N5)의 적색도 향상에 미치는 NH4Cl의 영향

  • Park, Eun-Young (Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Pee, Jae-Hwan (Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Yoo-Jin (Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Woo-Seok (Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology)
  • 박은영 (한국세라믹기술원 이천분원 도자세라믹센터) ;
  • 피재환 (한국세라믹기술원 이천분원 도자세라믹센터) ;
  • 김유진 (한국세라믹기술원 이천분원 도자세라믹센터) ;
  • 조우석 (한국세라믹기술원 이천분원 도자세라믹센터)
  • Published : 2009.11.30
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Abstract

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.

Keywords

References

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