نتایج جستجو برای: Al-Pure
تعداد نتایج: 531302 فیلتر نتایج به سال:
در این پروژه به منظور ساخت کامپوزیت مورد نظر از پودر آلومینیوم خالص ( purity 99%، mesh 325) و نانولوله های کربنی چند دیواره (purity 90%، ) به منظور ترکیب آلومینیوم زمینه با نانولوله های کربنی تقویت کننده روش معمول آسیاکاری مکانیکی بکار گرفته شده است. به منظور مطالعه تأثیر آسیاکاری بر مورفولوژی پودر آلومینیوم، زمان های 2، 4، 10، 15 ساعت به عنوان مدت زمان های آسیاکاری انتخاب شده است. ماهیت آسیاکا...
In this study, AlN whiskers were prepared in a tube furnace at 1000˚C for 1h with 500 nitrogen gas flow. Al powders with particle size of 3 μm and 45 μm and NH4Cl were used as raw materials. SEM, TEM and XRD analysis were used to characterize AlN whiskers. The results showed that the diameters of AlN whiskers would range from 140 nm to 340 nm if different amounts of NH4Cl and 3 μm Al p...
the present article studies the symbolism in the poetry of badrshakir al-siab. his literary method played an important role in leading the literature of 50s and 60s in iraq and the whole arab world. this article tries to express how siab after becoming familiar with western literature and being affected by the european symbolist poets could add a new form to the contemporary arabic poetry. he t...
Control of microstructure parameters that affecting the Al-Ti-C master alloys grain refining efficiency is leading to improve the aluminum grain refinement. This study was an attempt to produce Al-Ti-C master alloys that provide these controlling factors with relying on the solute effect theory. The produced master alloys were examined by using scanning electron microscopy (SEM), energy-dispers...
Electroplating uses aluminum material, where it’s easy to obtain, lighter, and cheaper than other metals. The research goal was determine the ability of electric current power (Al) coated with silver (Ag) by electroplating method, effect magnitude length time coating process took on weight Al Ag strength metal after tested using Brinnell test. method used is compare pure at different currents p...
thermal behavior of various solid feldspars are different, namely those of bivalent cations show no change in the distribution of al and si atoms, whereas feldspars of univalent cations become more disordered with raising temperature. in the latter case al atoms migrate from the sites they occupe at low temperatures and interchange positions with the si atoms. at high temperatures (but still be...
Results: “For school attendance, re-analysis showed benefits similar to those originally found in intervention schools for both children who did and did not receive deworming drugs. However, after correction of coding errors, there was little evidence of an indirect effect on school attendance amongst children in schools close to intervention schools. Combining these effects gave a total increa...
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