Scholarlink

<p>The brazed diamond samples were prepared through a novel Ni-Cr + CeO<sub>2</sub> filler alloy under inert gas protection. The effects of brazing temperature (1010–1070&#xa0;°C) and holding time (5–15&#xa0;min) on interface behavior and wear resistance of brazed diamond were systematically investigated. The results show that the wetting ability of filler alloy to diamond enhances with increasing brazing temperature and holding time, while the thermal damage of diamond is concurrently aggravated. The interface reaction layer is gradually thickened with increasing temperature and it stabilizes at approximately 3.5&#xa0;μm at 1050&#xa0;°C and above. The thickness of interface reaction layer gradually increases with the extension of holding time at 1030&#xa0;°C, and it tends to also stabilize at approximately 3.5&#xa0;μm when the holding time reaches 10&#xa0;min and more. The brazed diamond samples prepared by maintaining at 1030&#xa0;°C for 10&#xa0;min exhibit excellent wear resistance, with no noticeable fracture or falling off during grinding process. The phases of brazed layer mainly consist of Ni, Ni<sub>3</sub>Si, CrB, Cr<sub>3</sub>NiB<sub>6,</sub> and CeSi, with a microhardness value of 733.4 HV<sub>0.3</sub>. </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

Effects of Brazing Temperature and Holding Time on Interface Characteristics of Brazed Diamond with CeO2-Doped Ni-Cr Filler Alloy

  • 期刊论文

  • 发表日期：

    2025年5月14日

查看全文
  • Ao Zhang,
  • Jian Zhang,
  • Xiaotong Pang,
  • Junhao Sun,
  • Ang Xiao,
  • Junyi Liu

摘要

The brazed diamond samples were prepared through a novel Ni-Cr + CeO2 filler alloy under inert gas protection. The effects of brazing temperature (1010–1070 °C) and holding time (5–15 min) on interface behavior and wear resistance of brazed diamond were systematically investigated. The results show that the wetting ability of filler alloy to diamond enhances with increasing brazing temperature and holding time, while the thermal damage of diamond is concurrently aggravated. The interface reaction layer is gradually thickened with increasing temperature and it stabilizes at approximately 3.5 μm at 1050 °C and above. The thickness of interface reaction layer gradually increases with the extension of holding time at 1030 °C, and it tends to also stabilize at approximately 3.5 μm when the holding time reaches 10 min and more. The brazed diamond samples prepared by maintaining at 1030 °C for 10 min exhibit excellent wear resistance, with no noticeable fracture or falling off during grinding process. The phases of brazed layer mainly consist of Ni, Ni3Si, CrB, Cr3NiB6, and CeSi, with a microhardness value of 733.4 HV0.3.