Scholarlink

<p>Nano-Tungsten carbide was added to the composite coatings via microarc oxidation technology for high-temperature applications in aerospace. With the increase of nano-WC concentration, the surface micropore diameter increases, and micropore porosity decreases from 11.3 to 9.6%. The thickness of the coatings increased from 15.08 to 25.13&#xa0;μm. The coatings mainly comprised anatase-TiO<sub>2</sub>, rutile-TiO<sub>2</sub>, Al<sub>2</sub>TiO<sub>5,</sub> and WC. W existed in WC, and a trace amount of (Ti<sub>0.8</sub>, W<sub>0.2</sub>) C, W<sub><i>x</i></sub>C<sub><i>y</i></sub>. The microhardness of the coatings increased from 423 to 728&#xa0;HV. The coatings’ oxidation weight gains at 750&#xa0;°C decreased from 2.6012 to 1.5385&#xa0;mg/cm<sup>2</sup>. The microcracks on the coatings’ surface decreased gradually. The microcrack, which originates from the micropores, grows irregularly under the high-temperature oxidation. The nano-WC effectively hinders the high-temperature oxidation process and improves the high-temperature performance of the coatings.</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

Microstructure and High-Temperature Oxidation Properties of Microarc Oxidation Composite Coatings Based on Ti6Al4V: Effect of Nano-Tungsten Carbide

  • 期刊论文

  • 发表日期：

    2025年12月16日

查看全文
  • Yupeng Guo,
  • Hui Jiang,
  • Zhixiang Tang,
  • Xin Li,
  • Yadong Zhao,
  • Yubo Xing,
  • Hang Zhou,
  • Xiaofeng Lu,
  • Xiaolei Zhu

摘要

Nano-Tungsten carbide was added to the composite coatings via microarc oxidation technology for high-temperature applications in aerospace. With the increase of nano-WC concentration, the surface micropore diameter increases, and micropore porosity decreases from 11.3 to 9.6%. The thickness of the coatings increased from 15.08 to 25.13 μm. The coatings mainly comprised anatase-TiO2, rutile-TiO2, Al2TiO5, and WC. W existed in WC, and a trace amount of (Ti0.8, W0.2) C, WxCy. The microhardness of the coatings increased from 423 to 728 HV. The coatings’ oxidation weight gains at 750 °C decreased from 2.6012 to 1.5385 mg/cm2. The microcracks on the coatings’ surface decreased gradually. The microcrack, which originates from the micropores, grows irregularly under the high-temperature oxidation. The nano-WC effectively hinders the high-temperature oxidation process and improves the high-temperature performance of the coatings.