Nowadays, SiC is one of the refractory materials which is used widespread because of its unique properties like structural stability in high temperatures. SiC nano whiskers are important in reinforcement of different kinds of composites like ceramic base materials, thanks to their outstanding mechanical, thermal, and chemical properties like low expansion coefficient, high thermal resistant, hi...

Abstract Background The geochemical studies on the rare earth elements to demonstrate sources of toxic metals for soils and Nile sediments Aswan area are seldom. Results Minerallogically, studied soil agriculture samples consist mainly quartz (42%), clay minerals (33%), plagioclase (20%) magnesin-calcite (5%). Clay composed montmorillonite as bentonite. (75%), (15%), (5%) calcite calcian-montmo...

From 2015 to 2021, we optimized mass cultivation of diatoms in our own developed vertical column airlift photobioreactors using natural and artificial light (LEDs). The project took place at the ferrosilicon producer Finnfjord AS North Norway as a joint venture with UiT—The Arctic University Norway. Small (0.1–6–14 m3) reactors were used for initial experiments produce inoculum cultures while u...

The misuse of waste material has developed into another draw because the significance consciousness and unpleasant feelings. A by-product refinement silicon ferrosilicon is silica fume (SF). design production reinforced concrete seen remarkable success with fume. One most crucial elements commercial viability modern work been short-term usage Silica Rage (SR), as well manufacturing SF-regulated...

Unique quantitative bioaccessibility data has been generated, and the influence of surface/material and test media characteristics on the elemental release process were assessed for silicon containing materials in specific synthetic body fluids at certain time periods at a fixed loading. The metal release test protocol, elaborated by the KTH team, has previously been used for classification, ra...

The second part of the article presents perspective directions using boron and its compounds in preparation processes, metallurgical processing ore materials steel smelting order to improve quality final product. An efficient technology silicothermal production ferrosilicoboron containing 0.6–2.0% B 60–80% Si has been developed. advantage this scheme is possibility obtaining a boron-containing ...

a study for optimizing of siliconizing and borosiliconizing processes on carbon steels has been carried out. the process parameters, i.e, time and powder mixture, were considered for optimization of the case depth, surface quality and the hardness profile. time and temperature of the processes were 4 hr and 950˚c, respectively. powder mixture in siliconizing process was 2.5% ferrosilicon, 2.5% ...

micro silica (ms) is an extremely fine, spherical powder that is used as an additive for improving concrete performance. it is obtained as a by product of silicon metal and ferrosilicon alloy production.  due to its pozzolanic nature, micro silica can be used to enhance the qualities of both  fresh  and  hardened  concrete. addition of micro silica into the concrete as a cement replacement, dec...

A study for optimizing of siliconizing and borosiliconizing processes on carbon steels has been carried out. The process parameters, i.e, time and powder mixture, were considered for optimization of the case depth, surface quality and the hardness profile.&#10Time and temperature of the processes were 4 hr and 950˚C, respectively. Powder mixture in siliconizing process was 2.5% ferrosilicon, 2....