title: Fabrication of Porous Ag/TiO2/Au Coatings with Excellent Multipactor Suppression.
abstract: Porous Ag/TiO2/Au coatings with excellent multipactor suppression were prepared by fabrication of porous Ag surface through two-step wet chemical etching, synthesis of TiO2coatings by electroless-plating-like solution deposition and deposition of Au coatings via electroless plating. Porous structure of Ag surface, TiO2coatings on porous Ag surface and Au coatings on porous Ag/TiO2surface were verified by field-emission scanning electron microscopy, the composition and crystal type of TiO2coatings was characterized by X-ray photoelectron spectroscopy and X-ray diffraction. Secondary electron yield (SEY) measurement was used to monitor the SEY coefficient of the porous Ag coatings and Ag/TiO2/Au coatings. The as-obtained porous Ag coatings were proved exhibiting low SEY below 1.2, and the process was highly reproducible. In addition, the porous Ag/TiO2/Au coatings showed excellent multipactor suppression with the SEY 1.23 and good environmental stability. It is worth mentioning that the whole preparation process is simple and feasible, which would provide a promising application in RF devices.
authors.affiliation: College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China.
authors.forename: Duoduo
authors.initials: D
authors.lastname: Wu
authors.affiliation: College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China.
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Ma
authors.affiliation: College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Bao
authors.affiliation: Science and Technology on Space Microwave Laboratory, China Academy of Space Technology, Xi'an 710100, China.
authors.forename: Wanzhao
authors.initials: W
authors.lastname: Cui
authors.affiliation: Science and Technology on Space Microwave Laboratory, China Academy of Space Technology, Xi'an 710100, China.
authors.forename: Tiancun
authors.initials: T
authors.lastname: Hu
authors.affiliation: Science and Technology on Space Microwave Laboratory, China Academy of Space Technology, Xi'an 710100, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Yang
authors.affiliation: College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China.
authors.forename: Yuanrui
authors.initials: Y
authors.lastname: Bai