Multi‐Dimensional Design of Slippery Liquid‐Infused Coatings Empowering Long‐Term Corrosion Protection for Sintered Nd‐Fe‐B Magnets in Harsh Environments

Abstract In spite of superior magnetic properties, neodymium–iron–boron (Nd‐Fe‐B) applications in harsh environments have been greatly hindered by their susceptibility to corrosion, humidity, mechanical, and temperature attacks. Herein, a construction strategy of robust slippery liquid‐infused porous surfaces (SLIPS) coatings is proposed via the multi‐dimensional design of surface, bulk coating, and interface. The manipulation of colloidal states of silica particles by chemical hydrophobization allows for building a dense polymer network, enhancing interfacial adhesion and locking lubricant film effectively. The resulting coating is demonstrated to be extremely stable, endowing the magnet with excellent liquid…

• NN
  National Natural Science Foundation of China

  Awards: 52371184, 52225312
• CP
  China Postdoctoral Science Foundation

  Award: 2023M743618
• NS
  National Science Fund for Distinguished Young Scholars

  Award: 52225312
• NS
  Natural Science Foundation of Zhejiang Province

  Award: LY22E010002
• FR
  Fundamental Research Funds for the Provincial Universities of Zhejiang

  Award: GK249909299001‐005