نتایج جستجو برای: pacvd
تعداد نتایج: 67 فیلتر نتایج به سال:
Development und experimental testing of a new kind of dielectric barrier discharge flow reactors applicable for plasma-assisted chemical vapor deposition as well as surface treatment processes at atmospheric pressure are described. Using a combination of two upstream modules, a gradient mixer and a homogenizer, the reactor is fed by a laminar gas flow with an established concentration gradient ...
This paper is an attempt to synthesize nanostructured tantalum films on medical grade AISI 316L stainless steel (SS) using pulsed DC plasma assisted chemical vapor deposition (PACVD). The impact of duty cycle (17-33%) and total pressure (3-10 torr) were studied using field emission scanning electron microscopy (FESEM), grazing incidence x-ray diffraction (GIXRD), nuclear reaction analysis (NRA)...
فولاد زنگ نزن 316 با داشتن خواص مناسب از جمله قابلیت فرم پذیری مناسب، چقرمگی عالی، نرخ کارسختی بالا، مقاومت خزشی و مقاومت به خوردگی خوب، کاربردهای فراوانی دارد. علی رغم داشتن این مزایا، نیاز به داشتن مقاومت سایشی و فرسایشی بالاتر این فولاد در صنایع احساس می شود. در این پروژه، به منظور بهبود خواص مکانیکی سطحی فولاد زنگ نزن آستنیتی 316 و بهبود خواص فرسایشی آن، لایه ی نانوسختار tin به روش pacvd رو...
We introduce a new chemical vapor deposition (CVD) process that can be used to selectively deposit materials of many different types. The technique makes use of the plasmon resonance in nanoscale metal structures to produce the local heating necessary to initiate deposition when illuminated by a focused low-power laser. We demonstrate the technique, which we refer to as plasmon-assisted CVD (PA...
Si-incorporated diamond-like carbon (Si-DLC) coatings ranging from 0 to 2 at % Si were deposited on Ti-alloy substrate by means of radio frequency plasma-assisted chemical vapor deposition (r.f. PACVD) technique, using a mixture of benzene (C(6)H(6)) and silane (SiH(4)) as the reaction gas. The synergy in wear and corrosion of Si-DLC coatings was investigated by tribological and electrochemical...
The diamond-like carbon (DLC) films deposited on the articulating surface of medical-grade Ti and Ti–6Al–4V were characterized. The DLC films were synthesized by r.f. plasma assisted chemical vapor deposition (PACVD) using C6H6 at 10 mTorr. For wear tests, the ball-ondisk type wear tester was employed by wearing a 5-mm diameter ruby ball against a rotating metal disk. The DLC coating dramatical...
Nowadays plasma techniques are getting more and more involved in production technologies because the traditional chemical treatments are sometimes less feasible and/or environmentally harmful. Besides the plasma pre-treatments, the plasma technology can also be utilized to develop thin protective layers. Day by day new techniques come into sight, so the categorization and review of them is an i...
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