Aluminide Coating on Niobium by Arc Surface Alloying
نویسندگان
چکیده
منابع مشابه
Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique
A novel approach for depositing hydroxyapatite (HA) films on titanium substrates by using mechanical alloying (MA) technique has been developed. However, it was shown that one-hour heat treatment at 800°C of such mechanically coated HA layer leads to partial transformation of desired HA phase to beta-tri-calcium phosphate (β-TCP) phase. It appears that the grain boundary and interface defects f...
متن کاملNickel aluminide containing refractory-metal dispersoids: 1: Synthesis by reactive mechanical alloying
Nickel and aluminum powders were mechanically alloyed with 10 or 30 vol.% refractory metal powders (molybdenum or tungsten) for times up to 50 h. Intermetallic synthesis takes place after lo-20 h alloying, with concomitant dispersion of the inert refractory metal phase, resulting in an NiAl matrix containing fine refractory dispersoids. The reactive synthesis step is direct, without intermediat...
متن کاملSuper–conducting niobium films produced by means of UHV arc
The paper shows that high–quality super-conducting Nb films can be deposited by means of arc discharges under ultra–high vacuum conditions. The critical temperature Tc of Nb–films obtained with a planar cathodic arc Ultra High Vacuum (UHV) system, is very close to that of pure bulk niobium Tc = 9.26 K and the transition to super–conducting state is very narrow. The films have higher Residual Re...
متن کاملNiobium alloying effect in high carbon equivalent grey cast iron
Male, born in 1959. Professor and doctoral supervisor. He gained his Ph.D from University of Science and Technology Beijing in 1991. His research interests mainly focus on metal solidification, new continous casting technology, cast alloys and materials, etc. By now, his more than 220 academic papers have been published in journals demestic and abroad. He also holds 22 invention patents of Chin...
متن کاملUHV Arc Deposition of Superconducting Niobium Films
Recently the UHV arc technology was proposed as a possible alternative for depositing thin superconducting films of pure niobium on the inside surface of RF cavities for particle accelerators. The paper describes status of research on deposition of superconducting films for RF accelerating cavities. New UHV arc based devices with planar and cylindrical niobium cathodes are presented. The main r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals
سال: 2004
ISSN: 0021-4876
DOI: 10.2320/jinstmet.68.764