한국분말재료학회지 (Journal of Powder Materials)

  • 제27권6호
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  • Pages.503-508
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  • 2020
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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Hexagonal-Boron Nitride 강화 시멘트 복합체의 압축강도 향상에 대한 실험적 연구

Experimental Study on Improving Compressive Strength of Hexagonal Boron Nitride Reinforced Cement Composite

  • 최요민 (한국산업기술시험원 재료기술센터) ;
  • 신현규 (한국산업기술시험원 재료기술센터)
  • Choi, Yomin (Material Technology Center, Korea Testing Laboratory) ;
  • Shin, Hyun-Gyoo (Material Technology Center, Korea Testing Laboratory)
  • 투고 : 2020.11.09
  • 심사 : 2020.11.16
  • 발행 : 2020.12.28
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초록

The mechanical properties and microstructures of hexagonal boron nitride (h-BN)-reinforced cement composites are experimentally studied for three and seven curing days. Various sizes (5, 10, and 18 ㎛) and concentrations (0.1%, 0.25%, 0.5%, and 1.0%) of h-BN are dispersed by the tip ultrasonication method in water and incorporated into the cement composite. The compressive strength of the h-BN reinforced cements increases by 40.9%, when 0.5 wt% of 18 ㎛-sized h-BN is added. However, the compressive strength decreases when the 1.0 wt% cement composite is added, owing to the aggregation of the h-BNs in the cement composite. The microstructural characterization of the h-BN-reinforced cement composite indicates that the h-BNs act as bridges connecting the cracks, resulting in improved mechanical properties for the reinforced cement composite.

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