Gas-phase processes in diamond synthesis by hot-filament CVD.
نویسندگان
چکیده
منابع مشابه
Deposition of Diamond Films in a Closed Hot Filament CVD System
A closed system hot filament chemical vapor deposition (CVD) reactor has been used to deposit diamond films on silicon substrates. A fixed charge of hydrogen gas is fed into the deposition system until the desired deposition pressure level is reached. A solid graphite cylindrical rod held above the tungsten filament was the carbon source. System parameters for diamond film growth have been dete...
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Steel ball indentation and scratch adhesion testing of hot filament chemical vapour deposited diamond films onto AISI type 316 austenitic stainless steel substrates using two different interlayer systems, namely chromium nitride and borided steel, have been investigated. In order to compare the adhesion of these films with that of a well-known and strongly adherent system, detailed adhesion tes...
متن کاملDeposition of NCD films using hot filament CVD and Ar/CH4/H2 gas mixtures
Ar/CH4/H2 gas mixtures have been used in an attempt to deposit nanocrystalline (NCD) diamond and ultra-nanocrystalline (UNCD) diamond films using hot filament (HF) chemical vapour deposition (CVD). A detailed composition map has been developed for the type of films deposited in the Ar/CH4/H2 system. It was found that the standard gas mixtures of 1%CH4/Ar (+1–2%H2) that are used successfully to ...
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چکیده پلاتین، فلزی نجیب، پایدار و گران قیمت با خاصیت کاتالیزوری زیاد است که کاربرد های صنعتی فراوانی دارد. کمپلکس های پلاتین(ii) به عنوان دارو های ضد سرطان شناخته شدند و در شیمی درمانی بیماران سرطانی کاربرد دارند. خاصیت کاتالیزوری و عملکرد گزینشی پلاتین مستقیماً به اندازه و- شکل ماده ی پلاتینی بستگی دارد. بعضی از نانو ذرات فلزی در سطح مشترک مایع- مایع سنتز شده اند، اما نانو ساختار های پلاتین ب...
Dual catalytic purpose of the tungsten filament during the synthesis of single-helix carbon microcoils by hot-wire CVD.
We report on the deposition of crystalline single-helix carbon microcoils, in the as-deposited state, by the hot-wire chemical vapor deposition process without any special preparation of nano-sized transition metal catalysts and subsequent post-deposition annealing. Tungsten, originating from the heated tungsten filament, is identified as the catalyst material responsible for the growth of the ...
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ژورنال
عنوان ژورنال: KAGAKU KOGAKU RONBUNSHU
سال: 1990
ISSN: 0386-216X,1349-9203
DOI: 10.1252/kakoronbunshu.16.454