OPTICAL Ag MIRROR WITH HIGH VOLVUME FRACTION SiCp/Al COMPOSITE-TITANIUM ALLOY-PbO GLASS METAL PLUS DIELECTRIC FILMS, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

摘要

A method of making a high volume fraction SiCp/Al composite-titanium alloy-PbO glass metal plus dielectric films optical Ag mirror is disclosed. The method comprises: a step of preparing a novel mirror substrate, and a step of fabricating the mirror of film design. A high volume fraction SiCp/Al composite-titanium alloy-PbO glass metal plus dielectric films optical Ag mirror comprises, in sequence, at least: a high volume fraction SiCp/Al composite-Titanium alloy-PbO glass metal substrate, a transition layer, a reflection layer, a protection layer, and a transmission enhanced layer. The transition layer is a Cr film, the reflector layer is an Ag film, the protective layer is SiO ₂ and the transmission enhanced layer is Ta ₂O ₅. The high volume fraction SiCp/Al composite-titanium alloy-PbO glass metal plus dielectric films optical Ag mirror has high reflectivity (≥ 96％) in a visible wavelength range of 450-1600 nm. This material can be used in space telescopes and space surveillance cameras.