| abstract |
When a film is formed by sputtering, it has a higher reflectance than a pure Al film, and has excellent alkali resistance, acid resistance, and moisture resistance, which causes a decrease in reflectance even without a protective film. A difficult Al alloy reflective film, a reflective film laminate having such an Al alloy reflective film, an automotive lamp, a lighting fixture, and an Al alloy sputtering target capable of forming such an Al alloy reflective film are provided. To do. (1) One or more elements of Sc, Y, La, Gd, Tb, and Lu are contained in a total amount of 0.4 to 2.5 at%, and the balance is made of Al and unavoidable impurities, Al alloy reflective film characterized in that the roughness of the film surface measured with a force microscope is 4 nm or less, (2) Automotive lamps and lighting equipment having this reflective film, (3) Al alloy sputtering target for forming. [Selection] Figure 3 |