A method to elaborate micro-structures of ionic crystals based on the deposition of drops on a surface with a capillary is presented. The typical dimension of these structures is in the micron range. The possible applications of such structures in optics are discussed.

Presentamos un método para elaborar microestructuras de cristales iónicos que se basa en la deposición de gotas en una superficie usando un capilar. El tamaño típico de estas estructuras es del orden de micras. Se discute las posibles aplicaciones de estas estructuras en óptica.

The susceptibility of a duplex stainless steel UNS S31803 to thermal embrittlement at 475 °C was evaluated by means of mechanical tests (impact energy and hardness), magnetic measurements (hysteresis and thermomagnetic analysis) and scanning electron microscopy. The results show that the material undergoes severe embrittlement and hardening in the first 100 h. The corrosion resistance of the ferrite phase in a 10%HNO3 + 0.05%HF solution deteriorated after 500 h of ageing. The Curie temperature (Tc) was the most sensitive magnetic property to the microstructural changes that promote embrittlement. Tc increases with ageing time due to the progressive reduction of chromium in the Fe-rich matrix during spinodal decomposition.