Recent developments in the texture analysis program ANAELU

Burciaga-Valencia, D.C.; Villalobos-Portillo, Edgar E.; Marín-Romero, José Alfredo; Río, Manuel Sánchez del; Montero-Cabrera, M. E.; Fuentes-Cobas, Luis E.; Fuentes-Montero, Luis

doi:10.1007/s10854-018-8919-1

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Beam size was of 50 μm vertical × 150 μm horizontal. Debye rings data in 2D patterns were integrated by use of the WXDIFF and ANAELU programs. , Integrated 1D patterns were matched with those of gypsum and considered additional phases…”

Section: Experimental Methodsmentioning

confidence: 99%

Naica’s Giant Crystals: Deterioration Scenarios

Carreño-Márquez

Menéndez-Méndez

Ponce

et al. 2018

Crystal Growth & Design

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The Cave of Giant Crystals of Naica (Chihuahua, Mexico) is a world geological treasure worth to be preserved. These crystals of up to 12 m in length are made of selenite, the macrocrystalline variety of gypsum (CaSO4·2H2O). They have grown for thousands of years until the cave was dried, which allowed the cave and the crystals to be accessible, but exposed their surfaces in contact with air. Gypsum crystals are fragile because of their trend to dehydrate, the possible replacement to CaCO3 upon reactions with atmospheric CO2 as well as their intrinsic mechanical properties. Several laboratory experiments, designed to study the deterioration of selenite crystals under different artificial atmospheric conditions, are presented. Four atmospheric compositions rich in CO2, CH4, NO x , and air were tested for 1 year at temperatures of 25 and 60 °C and in either liquid or gaseous environments. The surface evolution was monitored by optical microscopy, infrared spectrometry, and grazing incidence X-ray diffraction with two-dimensional detectors. Surface alteration and dissolution in a water environment were observed in short exposition times, as well as the formation of bassanite (CaSO4·1/2H2O). Neither anhydrite nor calcite was detected. The gaseous environment constituted the most detrimental conditions to the gypsum crystals integrity.

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Section: Experimental Methodsmentioning

confidence: 99%

Naica’s Giant Crystals: Deterioration Scenarios

Carreño-Márquez

Menéndez-Méndez

Ponce

et al. 2018

Crystal Growth & Design

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“…Part (a) considers 1D and 2D diffraction experiments, with Bragg-Brentano, grazing incidence and transmission geometries. The inverse pole figure of the symmetry axis of fiber-textured piezoceramics is proposed and refined by a Rietveld-type procedure [2].…”

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Texture and eco-piezoceramics

Fuentes-Cobas¹,

Narváez-Monroy²,

Campos-Rodríguez³

et al. 2021

Acta Cryst Sect A

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Research on lead-free piezoceramics is a trending topic [1]. A significant component of this search is the characterization of the effect of texture on the properties of polycrystalline electroceramics. The present contribution describes an integrated methodology, systematized in a software package, to solve the following tasks: (a) interpretation by numerical simulation of XRD patterns produced by textured samples; (b) forecast of the effective elasto-electrical properties of piezoceramics, starting from the knowledge of the corresponding single-crystal tensors and the texture determined in (a).

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