نتایج جستجو برای: nano tib2

تعداد نتایج: 51171  

Journal: :Journal of Nanoscience and Nanotechnology 2011

In this paper TiB2-TiC/Ni cermet with various Ni (20, 40 and 60 wt %) content were synthesized by mechanically activated self-propagating synthesis (MASHS) and effect of the addition of Ni on synthesis parameters and microstructure of synthesized samples were investigated. First raw materials (B4C, Ti and Ni) milled in Ar atmosphere. Then milling powders analyzed by XRD. In next step powders sy...

Journal: :Journal of the Ceramic Association, Japan 1985

2012
Youngjae Kim Elizabeth A. Corley Dietram A. Scheufele

Government regulations to address technological risks are important for the successful development and application of nanotechnology, but there is an ongoing debate in the USA about who is responsible for the regulation of nanotechnology. In a mail survey of leading US nano-scientists, we examine scientists’ perceptions about nano-regulation, including the government level (local, national, or ...

Journal: :Metals 2021

Heterogeneous nucleation is a widespread phenomenon in both nature and technology. However, our current understanding largely confined to the classical theory (CNT) postulated over century ago, which heterogeneous occurs stochastically form spherical cap facilitated by substrate. In this paper, we show that systems with negative lattice misfit completes deterministically within three atomic lay...

Journal: :Materials & Design 2021

The present work explores the processability of an advanced aluminum alloy, namely AlCu-TiB2, by selective laser melting (SLM), and correlation between microstructure mechanical properties as built specimens. principal process parameters emission in pulsed wave (PW) mode, power exposure time, were varied to achieve full density parts starting from prealloyed powders. Detailed analysis defects h...

ژورنال: :مهندسی مکانیک مدرس 0
ابراهیم بهرامی زاده دانشگاه صنعتی بابل سلمان نوروزی دانشیار دانشگاه صنعتی بابل حامد جمشیدی اول دانشگاه صنعتی نوشیروانی بابل

در پژوهش حاضر، ریزساختار و مقاومت به سایش پوشش های کامپوزیتی tic-al2o3 و tib2-tic-al2o3ایجاد شده به صورت درجا بر روی سطح فولاد زنگ نزن آستنیتی 304 از طریق فرایند جوشکاری قوس تنگستن با گاز محافظ مورد بررسی قرار گرفت. بدین منظور، خمیری پیش نشست از مخلوط های پودری 3tio2-4al-3c و 3tio2-4al-b4c آماده شد و بر روی سطح زیرلایه فولاد زنگ نزن آستنیتی aisi 304 اعمال شد، سپس با استفاده از فرایند جوشکاری قو...

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