Ceramic insulators are widely used in microelectronic devices. In this paper, the mechanical and electrical properties of porcelain ceramic insulator fired at 1350 ◦C have been investigated along with microstructural characterization using scanning electron microscopy (SEM) in order to understand the structure–property relationship of ceramic insulator. The bending and the dielectric strength w...

Changbai jade is a type of ore with good economic value that found in the tuff Upper Triassic Formation Mesozoic period Jilin Province, China. However, mineral composition kaolinite group Jade has not been definitively identified, and there lack systematic mineralogical spectral analysis. To analyze spectroscopic characteristics jade, this study utilized several modern testing methods, includin...

إ ةيرهجملا جماربلا لمشي اذهو ،ةيرورملا ةآرحلا ةاآاحم جمارب روطت يف مهاس ةيتامولعملا ايجولونكتلا يف ريبكلا مدقتلا ن ) Microscopic ( ، نلا ىلع بلطلا ةاآاحم اًضيأ لمشي نايحلأا ضعب يفو ، تاعطاقتو قرط نم اهيف امب لقنلا ةموظنم ةاآاحمب حمسيل يللآا بساحلا تاقيبطت قاطنو لق . ةيرهجملا ةيرورملا ةآرحلا ةاآاحم جمارب نيب نراقتو عجارت ةقرولا هذهو ) Microscopic ( ةيلومشلاو ) Macroscopic ( فلاتخلاا هجوأ ىلع ةزآر...

The sheltered environment of the Algares +30 level adit (underground mine gallery) contributes to preservation secondary water-soluble minerals formed on tunnel walls. massive sulphide and related stockwork zone are hosted by Mine Tuff volcanic unit exposed in walls gallery, showing intense oxidation hydrothermal alteration. Minerals from halotrichite group were identified efflorescent salts, t...

SEM-EDS based automated mineralogy is widely used in the geological industries in order to study mineral deposits, for mine planning and for oil and gas reservoir analysis. It is also being increasingly used in academic settings to study phase distributions and the compositions of bulk samples. Several solutions integrating SEM and EDS hardware with dedicated software are available on the marke...

Alumina nanostructures, nanowires, and semicolumn nanotubes with high aspect ratios were synthesized by the chemical etching of porous alumina membranes (PAMs) in phosphoric acid solution. The morphology and structure of alumina nanostructures were analyzed by scanning electron microscopy (SEM), energy dispersive spectrum (EDS), and X-ray diffraction (XRD), respectively. The results showed that...

اهتفاقثو اهرخفو ةملأا ةيأ ةيوه نم أزجتي لا اءزج يرامعملا ثارتلا لكشي . ةيخيراتلا ةرامعلا رصانع نا يف اهؤانبو اهميمصت مت دق ةيملاسلإا تابلطتمل يويحو لاعف لكشب ةباجتسلاا ىلع ةرداق نوكت ثيحب يضاملا ةينيدلاو ةيسفنلاو ةيعامتجلااو ةيئيبلاو ةيداملا سانلا . رضاحلا تقولا يف نويرامعملا نوسدنهملا موقي رصانعلا ذخأب اوذخأي ام ةداعو ميمصتلا عيراشم يف اهلاخدا و ةيملاسلإا ةيخيراتلا ينابملا نم ةفلتخملا نيوكت ر...

Introduction: Impact craters found across the Stardust foils have preserved residue from the cometary grains [1, 2, 3]. It has been successfully demonstrated that stoichiometric mineral compositions have been preserved in larger craters (e.g. >15 μm) including identified mineral grains [4]. Techniques used have been SEM EDS analyses of residue in-situ within craters and TEM EDS analyses of wafe...