On the phase state of solid solutions at a solid state-gas interface (CdS-CaSe) - H2S gas

The phase state of the near-the-surface layer of the CdS-CdSe (14 and 50 mole % CdSe) solid solution crystals at the interface boundary with gaseous H2S at the room temperature is studied through the electron microscopy and X-ray diffractometry methods. It is established that the near-the-surface layer contains under the above conditions three discrete phase - CdS, CdSe and matrix phase (CdS-CdSe), whereby no new chemical compounds are formed