نتایج جستجو برای: nial
تعداد نتایج: 677 فیلتر نتایج به سال:
در این تحقیق ترکیب بین فلزی nial نانوساختار از طریق آلیاژسازی مکانیکی پودر های نیکل و آلومینیم تولید شد. آلومینایدهای نیکل از جمله مواد پیشرفته ای هستند که از خواص مهندسی منحصر به فردی نظیر نقطه ذوب بالا، نسبت استحکام به وزن بالا و مقاومت به خوردگی و اکسیداسیون مناسب در دمای بالا برخوردار می باشند. در این تحقیق ابتدا مخلوط پودرهای خالص نیکل، آلومینیم و مولیبدن در پنج ترکیب ni50al50-xmox (x=0, 0...
Batteries. In their Research Article (e202214880), Weibo Hua, Wei Tang, Sylvio Indris, Xiaodong Guo et al. synthesized a series of Ni-rich Li(NiAl)O2 oxides through tailoring the heating temperature. The with high cation disorder experience comparably homogeneous fatigue process upon extended cycling.
This paper presents the results of the continued development of creep-resistant, alumina-forming austenitic (AFA) stainless steel alloys, which exhibit a unique combination of excellent oxidation resistance via protective alumina (Al2O3) scale formation and high-temperature creep strength through the formation of stable nano-scale MC carbides and intermetallic precipitates. Efforts in fiscal ye...
ÐThe longitudinal primary creep of long-®ber composites is modeled by considering the transient stress states arising from load transfer from the weaker matrix phase to the stronger ®ber phase as the composite transitions from the elastic state present immediately after loading to steady-state stage where both phases creep. The eect of primary creep of each of the phases on the primary creep o...
Four Ni-Al intermetallic compounds with the Al concentrations in range of 28 to 35 (in atomic percentage) have been fabricated by laser metal deposition (LMD) through mixing appropriate contents pure Ni powder pre-alloyed high-Al nickel aluminide powder. Ni-35Al and Ni-32Al are both composed more than 45 vol.% β-NiAl matrix phase dispersing γ′-Ni3Al, while Ni-30Al Ni-28Al consisted worm-like, n...
Changes in the structural and textural properties of NiAl-layered double hydroxides (LDHs) (with 2–4 molar ratios metals) state nickel that occur different steps synthesis catalysts were studied using XRD, thermal analysis, TPR, low-temperature nitrogen adsorption, XANES, EXAFS, electron microscopy methods. Relations between content, catalyst reduction conditions, nickel, its catalytic revealed...
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