Scholarlink

<p>Fe-Ni alloy with a 60:40 wt.% ratio was prepared via mechanical milling using a 10:1 ball-to-powder ratio at 800&#xa0;rpm for 25 hours under a controlled argon atmosphere. Y<sub>2</sub>O<sub>3</sub> particles (2, 4, 6, and 8 wt.%) were then added to the Fe-Ni alloy for one hour at 350&#xa0;rpm in order to increase homogeneity. The milled powders were cold-pressed at 700&#xa0;MPa uniaxial pressure and subsequently sintered in a horizontal tube furnace at 1100&#xa0;°C for 1&#xa0;hr. under a continuous argon flow. The results indicated a gradual decrease in density with Y<sub>2</sub>O<sub>3</sub> addition, although the relative density remained above 90%. XRD analysis confirmed the formation of FeNi<sub>3</sub>, FeYO<sub>3</sub>, and NiY<sub>5</sub>. Microstructural examination revealed a homogeneous distribution of Y<sub>2</sub>O<sub>3</sub> within the Fe-Ni matrix. The addition of Y<sub>2</sub>O<sub>3</sub> significantly enhanced hardness, compressive strength, and wear resistance while reducing the coefficient of friction (COF), demonstrating its beneficial role in improving the overall mechanical properties of the alloy.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Impact of Y2O3 Ceramic Oxide Addition on the Microstructure and Tribological Properties of 60 Fe-40 Ni Alloy Prepared by PM

  • 期刊论文

  • 发表日期：

    2025年7月31日

查看全文
  • A. Hegazy Khallaf,
  • Omayma A. Elkady,
  • Mohamed Ali Hassan

摘要

Fe-Ni alloy with a 60:40 wt.% ratio was prepared via mechanical milling using a 10:1 ball-to-powder ratio at 800 rpm for 25 hours under a controlled argon atmosphere. Y2O3 particles (2, 4, 6, and 8 wt.%) were then added to the Fe-Ni alloy for one hour at 350 rpm in order to increase homogeneity. The milled powders were cold-pressed at 700 MPa uniaxial pressure and subsequently sintered in a horizontal tube furnace at 1100 °C for 1 hr. under a continuous argon flow. The results indicated a gradual decrease in density with Y2O3 addition, although the relative density remained above 90%. XRD analysis confirmed the formation of FeNi3, FeYO3, and NiY5. Microstructural examination revealed a homogeneous distribution of Y2O3 within the Fe-Ni matrix. The addition of Y2O3 significantly enhanced hardness, compressive strength, and wear resistance while reducing the coefficient of friction (COF), demonstrating its beneficial role in improving the overall mechanical properties of the alloy.