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J. Korean Ceram. Soc. > Volume 30(6); 1993 > Article
Journal of the Korean Ceramic Society 1993;30(6): 429.
Mo 입자에 의한 Ni 결합 $Cr_3C_2$의 고인성화
한동빈, 장철우, 백성기, 박병학
산업과학기술연구소 무기재료연구분야
Toughening of Ni Bonded $Cr_3C_2$ by Mo Particulates
Cr3C2 material is characterized by high chemical stability and poor sinterability with low strength [50~150MPa]. In his study, low melting temperature nickel powder was used to improve sinterability as well as strength. In addition, molydenum particles were added to the Ni-bonded Cr3C2 cermet pseudomatrix to increase resistance to fracture. The specimens made by hot-pressing under vacuum and strength was measured by 4-point bending. Indentation cracking and fractographic examination were conducted to study the interaction of the indentation cracks with the reinforcing particles. Toughening mechanisms and failure will be discussed in terms of crack/particle interactions and compared with previous works.
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