نتایج جستجو برای: Firing temperature
تعداد نتایج: 474095 فیلتر نتایج به سال:
a pure silicate host namely sr2mgsi2o7 as a support for a long-lasting afterglow when dopped with rare-earth elements was sought after. to this end the process of obtaining firing temperatures of the above mentioned phase in normal condition was carried out using suggested wet and dry methods. the degree of purity obtained in these preparatory methods as well as the different firing temperature...
High-temperature adhesives are considered for high-temperature applications such as the refractory industry. In this research, inorganic high-temperature phosphate-based adhesive was prepared using alumina and micro silica as the main raw materials and monoaluminum phosphate as a binder. The effect of firing temperature on the properties of the adhesive including phases, microstructure, compres...
The influence of firing conditions on the mineralogical composition of clay base ceramics is studied. Experimental samples fired in oxidation atmosphere at temperature rates 850, 900, 950, 1000 and 1050 with respect to high amount of CaO in raw materials (Ave. 18.76 %), these samples classified in Ca-rich clay group. The determination of chemical composition, phase structure and mineralogy were...
in the present work, attempts have been made to find appropriate coating by testing different compounds. results showed that the optimum enamel is a compound with 1 wt.% cobalt oxide, 3 wt.% chromium oxide (in addition to hundred percent) with the firing temperature of 840 ˚c. constants of vft equation were determined by examination of melting behavior of the optimum enamel and measurement of t...
A pure Silicate host namely Sr2MgSi2O7 as a support for a long-lasting afterglow when dopped with rare-earth elements was sought after. To this end the process of obtaining firing temperatures of the above mentioned phase in normal condition was carried out using suggested wet and dry methods. The degree of purity obtained in these preparatory methods as wel...
If you are reading this, you have one less problem than the crabs that are the subject of a new study in this issue of PLoS Biology. Humans, like all mammals (as well as birds), are ‘‘warm-blooded,’’ or more correctly ‘‘homeothermic,’’ meaning we maintain our core body organs at a constant temperature. We expend considerable energy to do so, and may die when we cannot. In contrast, crabs, cod, ...
In this study, the effect of nano-titania addition on the mechanical strength of mullite-bonded alumina-siliconcarbide nano-composites was investigated. To this end, the gel-casting process via nano-silica sol was used for shaping the nano-composite.The firing temperature of composition was determined by use of STA. The compressive and bending strengths of samples were measured after firing at ...
Deterioration of historical porous materials as a result of crystallization of soluble salts is a well-known phenomenon. Optimizing the water consumption in desalination of historical potteries is highly desirable due to safety and conservation of materials. The present paper describes adoption of a response surface methodology (RSM) in central composite design (CCD), through systematic changes...
Ccrumic refers to all fircd products incl uding pou ery, hrick. and tile that is primarily composed of clay with different iJlllo unts of o ther materia ls thaI have a source from soil and when they lired .produced a hard material. Firing the clay body to the hanJness of ceramic hody is the next critical stage in manufm:turing. To de termine the firing te mperatu re. four lired (450, 600....
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