Fe-26Si-9B alloy was selected as a potential phase change material (PCM) to store energy at temperatures up 1300 °C. A suitable refractory is crucial building PCM container for in thermal storage systems. The should have the ability withstand corrosion from liquid and not pollute after long-term cycles high temperatures. In this work, Si3N4 candidate material. To investigate interaction between...

Cobalt is the most used metal binder in hard metals since its extraordinary wetting, adhesion and mechanical properties. Nevertheless, it has been recognized genotoxic cancerogenic with higher toxicity combination WC. To substitute Co an alternative binder, interaction between WC must be taken into account. In this work, IN625 considered as a due to desirable of high-temperature strength corros...

A series of zirconolite ceramics with composition CaZr1‐xThxTi2O7 (Δx = 0.10) were reactively sintered at 1350 ˚C for 20 h, in air (0 ≤ x 0.60) and 5% H2/N2 0.40). sample corresponding to 0.20 was also produced by hot isostatic pressing (HIP) 1300 100 MPa 4 h. Th4+ immobilisation most readily achieved under oxidising conditions, preferentially incorporated within a pyrochlore‐structured phase t...

صلاخلا ـ ة : ُّ دعتُ ل ثم ةيعيبطلا تاغللا ةجلاعم تاقيبطت نم ديدعلل ايساسأ انوكم ةيعوضوملا ةئزجتلا قيبطت تامولعملا عاجرتساو صوصنلا صيخلت . نم فدهلا وه ثحبلا اذ ه قت و مي ةيعوضوملا ة ئزجتلا تا يمزراوخ ة يلاعف ضوملا دودحلا ى لع فرعتلا يف ة يبرعلا صوصنلا لخاد ةيعو . م تو قايس لا اذ ه يف ة فلتخم رداصم نم ةيبرع صوصن ةسمخ لخاد اهنوظحلاي يتلا ةركفلا وأ عوضوملا تاريغت ىلع فرعتلل ةيبرعلا ةغللا ءارق نم ة...

Chinese citrus fly, Bactrocera minax is a destructive and univoltine pest of fruits. Geographical altitudinal gradients as well prevailing climate affect the biology ecology insect. Hence, this study aimed to ascertain effect altitude on adult emergence morphological variations in various ecological settings Ramechhap district Nepal from February June 2021 orchard. Six ranges were selected 50 m...

The results of experimental studies on the phase formation CaAl2O4 (CA) and CaAl4O7 (CA2) from CaCO3-Al2O3 powder mixtures in temperature range 1250 - 1450 ° C ate presented. In order to calculate content raw materials charge, criterion obtaining high-alumina clinker with Al2O3 71 72 wt. % CaO 27 28 wt.% is proceeded. This mass ratio system state diagram suggests presence two calcium-aluminate ...

A large number (greater than 150) of porous steatite ceramic rods were prepared using different types renewable plant fiber products as pore-forming agent with mass contents ranging from 2 to 10%. In addition, dense ceramics synthesized for comparison within a gas furnace at sintering temperatures between 1300 and 1350 °C. High-resolution 3D X-ray microscopy facilitated non-destructive, direct ...

Coarse woody debris (CWD) biomass was measured and mapped in burned, clearcut, and intact lodgepole pine forests in two areas of the Rocky Mountains of Wyoming: the Medicine Bow National Forest (MBNF) and Yellowstone National Park (YNP). In addition, the amount of CWD consumed or converted to charcoal by fire was estimated in a recently burned stand in YNP. A spatially explicit simulation model...