| 摘要 |
PCT No. PCT/GB89/00068 Sec. 371 Date Jul. 23, 1990 Sec. 102(e) Date Jul. 23, 1990 PCT Filed Jan. 19, 1989 PCT Pub. No. WO89/06707 PCT Pub. Date Jul. 27, 1989Material transparent at infra red wavelengths, 3-5 and 8-14 mu m is formed of ZrN, YN, CeN, TLN, or EuN. The material can be used as a self supporting material or as a coating on substrates such as infra red transparent material e.g. Ge, ZnS, ZnSe, As2S3, As2Se3, optically transparent materials e.g. sodium glass, or reflecting surfaces such as metal surfaces, e.g. Al or silvered surfaces. For some substrates e.g. Ge a thin, e.g. 10-1,000 Angstrom bonding layer may be used to improve adhesion. Bonding layers may be Ge, Si, GexC1-x, SixC1-x (0<x<1). The coating may be produced by sputtering in a glow discharge chamber using Ar and N gases.
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