• 专利标题:   Preparing laser-induced graphene coating on surface of composite material sealing piece comprises stirring graphene oxide powder in deionized water, and realizing controllable preparation of laser induced graphene coating.
  • 专利号:   CN112645737-A, CN112645737-B
  • 发明人:   DI Z, WU N, ZHANG Y, YIN M, CUI Y
  • 专利权人:   UNIV XIAN TECHNOLOGY
  • 国际专利分类:   C04B041/85
  • 专利详细信息:   CN112645737-A 13 Apr 2021 C04B-041/85 202142 Pages: 11 Chinese
  • 申请详细信息:   CN112645737-A CN11314195 20 Nov 2020
  • 优先权号:   CN11314195

▎ 摘  要

NOVELTY - Preparing laser-induced graphene coating on surface of composite material sealing piece comprises (i) pouring graphene oxide powder into glass container containing deionized water, and stirring uniformly, (ii) placing the C/C composite material finger tip sealing in the ultrasonic cleaning machine filled with acetone solution for cleaning, and taking out, (iii) coating the C/C composite material with the graphene oxide solution, and drying the C/C composite material coated with graphene oxide solution, (iv) placing the C/C composite material finger tip sealing after drying in the step (iii) in the femtosecond laser processing system, according to the C/C composite material finger tip sealing structure profile, planning laser scanning path track, realizing controllable preparation of laser induced graphene (LIG) coating based on the photo-thermal effect of high-repetition-frequency femtosecond laser. USE - The method is useful for preparing laser-induced graphene coating on surface of composite material sealing piece. ADVANTAGE - The method enables to prepare laser-induced graphene coating that has excellent physical and electrochemical anti-corrosion effect, and improves service life and reliability of aviation engine composite material sealing piece. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of preparation process of the laser induced graphene coating on the surface of the C/C composite fingertip sealing surface.