نتایج جستجو برای: pvd coatings
تعداد نتایج: 24563 فیلتر نتایج به سال:
High Speed Steel (HSS) specimen surfaces were coated with AlCrN and AlTiN via Physical Vapor Deposition (PVD) method. Then, the wear performances of film coatings so produced investigated by using different abrasive types particle sizes. During micro-abrasion tests, 0.5, 1 1.5 N loads applied for periods 60 180 seconds. loss increased increasing SiC Al2O3 size. Micro-grooving micro-rolling obse...
The lifetimes and the premature wear of machining tools impact on manufacturing efficiencies and productivities. A significant proportion of machining tool damage can be attributed to component wear. Here, titanium aluminium nitride (TiAlN) multi-layered with titanium diboride (TiB2) prepared by PVD (Physical Vapour Deposition) sputtering onto H-13 substrates are studied as potential wear-resis...
زمینه و هدف: علی رغم مطالعات متعدد انجام شده در مورد عوامل ایجاد کننده و درمان جداشدگی رگماتوژن شبکیه، در این زمینه اختلاف نظر وجود دارد. هدف این مطالعه بررسی متون و مقالات اخیر جهت بررسی عوامل مستعد کننده و روش های درمان این اختلال است. روش کار: این مطالعه با مرور مقالات مرتبط در ده سال اخیر (2004-2014) در pubmed انجام شده است. یافته ها: دو عامل اصلی نگهدارنده اتصال شبکیه به لایه های زیرین، پم...
This review considered various methods for depositing special modifying coatings on medical implants made of titanium alloys including techniques such as electrochemical deposition, sol–gel process, atmospheric plasma and PVD (magnetron sputtering vacuum arc deposition). The rationale is provided the use to improve performance efficiency implants. concept a functional multilayer coating designe...
The substrate material was nickel-based superalloy (In738LC), and CoNiCrAlY was pressureless plasma-sprayed on the substrate as the bond coating. As the top coating, zirconia with 4 mol% yttria was electron beam-physical vapor deposited (EB-PVD) on the rotating substrate. The rotation speeds in the EB-PVD process were 5, 10 and 20rpm. The specimens were exposed to 1273K in air atmosphere for 20...
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