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2019 Vol.29, Issue 4 Preview Page
Analysis of Attrition Rate of 50 μm Size Y2O3 Stabilized Zirconia Beads with Different Microstructure and Test Conditions

50 μm급 이트리아 안정화 지르코니아 비드의 미세구조 및 마모 조건에 따른 마모율 분석

Jung-Hwan Kim1
,
Sae-Jung Yoon12
,
Byung-Dong Hahn12
,
Cheol-Woo Ahn1
,
Woon-Ha Yoon1
,
Jong-Jin Choi1†
김 정환1
,
윤 세중12
,
한 병동12
,
안 철우1
,
윤 운하1
,
최 종진1†
1Functional Ceramics Department, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
2Advanced Materials Engineering, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
1한국기계연구원 부설 재료연구소 기능세라믹연구실
2과학기술연합대학원 대학교 신소재공학 전공
†Corresponding author E-Mail : finaljin@kims.re.kr (J.-J. Choi, KIMS)
April 2019. pp. 233-240
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Abstract

This study analyzes the mechanical properties, including the attrition rate, of 50 μm size yttria-stabilized zirconia (YSZ) beads with different microstructures and high-energy milling conditions. The yttria distribution in the grain and grainboundary of the fully sintered beads relates closely to Vickers hardness and the attrition rate of the YSZ beads. Grain size, fractured surfaces, and yttrium distribution are analyzed by electronic microscopes. For standardization and a reliable comparison of the attrition rate of zirconia beads with different conditions, Zr content in milled ceramic powder is analyzed and calculated by X-ray Fluorescence Spectrometer(XRF) instead of directly measuring the weight change of milled YSZ beads. The beads with small grain sizes sintered at lower temperature exhibit a higher Vickers hardness and lower attrition rate. The attrition rate of 50 μm YSZ beads is measured and compared with the various materials properties of ceramic powders used for high-energy milling. The attrition rate of beads appears to be closely related to the Vickers hardness of ceramic materials used for milling, and demonstrates more than a 10 times higher attrition rate with Alumina(Hv ~1650) powder than BaTiO3 powder (Hv ~315).

Keywords
ceramic beads
attrition rate
YSZ
zirconia
TZP
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 29
  • No :4
  • Pages :233-240
  • Received Date : 2019-03-07
  • Revised Date : 2019-03-27
  • Accepted Date : 2019-03-29
  • DOI :https://doi.org/10.3740/MRSK.2019.29.4.233
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