Precision Multilayer Coating for Large High-End Mirrors

2015 ◽  
Author(s):  
Robert Mueller ◽  
◽  
A. Luca ◽  
A. Eibsich ◽  
J. Landrock ◽  
...  
Keyword(s):  
Multilayer Coating

The influence of multilayer structure on mechanical behavior of TiN/TiAlSiN multilayer coating

2021 ◽  
Author(s):  
Hairui Ma ◽  
Qiang Miao ◽  
Gaohui Zhang ◽  
Wenping Liang ◽  
Yang Wang ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Multilayer Structure ◽  
Multilayer Coating

scholarly journals A Multilayer Functionalized Drug-Eluting Balloon for Treatment of Coronary Artery Disease

Pharmaceutics ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 614
Author(s):  
Hak-Il Lee ◽  
Won-Kyu Rhim ◽  
Eun-Young Kang ◽  
Bogyu Choi ◽  
Jun-Hyeok Kim ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Ex Vivo ◽  
Multilayer Coating ◽  
Balloon Catheter ◽  
Transition Time ◽  
Coating Materials ◽  
Drug Transfer ◽  
Coated Materials ◽  
Drug Loss ◽  
Drug Eluting

Drug-eluting balloons (DEBs) have been mostly exploited as an interventional remedy for treating atherosclerosis instead of cardiovascular stents. However, the therapeutic efficacy of DEB is limited due to their low drug delivery capability to the disease site. The aim of our study was to load drugs onto a balloon catheter with preventing drug loss during transition time and maximizing drug transfer from the surface of DEBs to the cardiovascular wall. For this, a multilayer-coated balloon catheter, composed of PVP/Drug-loaded liposome/PVP, was suggested. The hydrophilic property of 1st layer, PVP, helps to separate drug layer in hydrophilic blood vessel, and the 2nd layer with Everolimus (EVL)-loaded liposome facilitates drug encapsulation and sustained release to the targeted lesions during inflation time. Additionally, a 3rd layer with PVP can protect the inner layer during transition time for preventing drug loss. The deionized water containing 20% ethanol was utilized to hydrate EVL-loaded liposome for efficient coating processes. The coating materials showed negligible toxicity in the cells and did not induce pro-inflammatory cytokine in human coronary artery smooth muscle cells (HCASMCs), even in case of inflammation induction through LPS. The results of hemocompatibility for coating materials exhibited that protein adsorption and platelet adhesion somewhat decreased with multilayer-coated materials as compared to bare Nylon tubes. The ex vivo experiments to confirm the feasibility of further applications of multilayer-coated strategy as a DEB system demonstrated efficient drug transfer of approximately 65% in the presence of the 1st layer, to the tissue in 60 s after treatment. Taken together, a functional DEB platform with such a multilayer coating approach would be widely utilized for percutaneous coronary intervention (PCI).

Environmentally Friendly Tannic Acid Multilayer Coating for Reducing Corrosion of Carbon Steel

2020 ◽  
Author(s):  
Christy M. Koerner ◽  
David P. Hopkinson ◽  
Margaret E. Ziomek-Moroz ◽  
Alvaro Rodriguez ◽  
Fangming Xiang
Keyword(s):  
Carbon Steel ◽  
Tannic Acid ◽  
Multilayer Coating ◽  
Environmentally Friendly

scholarly journals Material Application of a Transformer Box: A Study on the Electromagnetic Shielding Characteristics of Al–Ta Coating Film with Plasma-Spray Process

Coatings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 495 ◽  
Author(s):  
Fei-Shuo Hung
Keyword(s):  
Stainless Steel ◽  
Structural Characteristics ◽  
Steel Substrate ◽  
Pure Aluminum ◽  
Multilayer Coating ◽  
Thickness Effect ◽  
Stress Effect ◽  
Coating Film ◽  
Coating Structure ◽  
Frequency Condition

In this study we present the results of two experiments. In the first one, a Ta–Al–SS (stainless steel (SS)) multilayer coating structure was prepared using plasma spraying equipment to investigate the coating structure and interface properties. In the second one, Ta–Al on multilayer glass was prepared using the sputtering process to measure the thickness effect of thin film on electromagnetic wave shielding (EMI) characteristics and on the design of high-power switchboard covers. According to the experimental results, the multilayer structure of Ta–Al on SS improves the mechanical properties of a stainless steel plate by enhancing the explosion-proof property. An appropriate thickness of the plasma-sprayed pure aluminum layer can increase the adhesion to the stainless steel substrate and buffer the stress effect. After heat treatment (annealing), the Ta–Al–SS multilayer structural characteristics are excellent and suitable for shielding effects at different temperatures and humidity, which can be used as a reference for the engineering application of communication rooms and base power stations. According to EMI test of multi-coated glass (Ta–Al–glass), by increasing the thickness of Ta layer, we cannot effectively improve full-frequency EMI shielding with improved shielding at low-mid frequency condition. In addition, the Ta–Al interface formation of an Al–Ta–O compound layer can improve the adiabatic effect to reduce the thermal conductivity.

Solid Lubricating Films for Extreme Environments

1988 ◽  
Vol 140 ◽  
Author(s):  
Irwin L. Singer
Keyword(s):  
Material Selection ◽  
Multilayer Coating ◽  
Composite Films ◽  
Extreme Environments ◽  
Carbon Films ◽  
Friction Coefficients ◽  
Film Adhesion ◽  
Scientific Principles ◽  
Recent Developments ◽  
Deposition Processes

AbstractAdvances in solid lubricating films for vacuum and high temperature applications are reviewed. Traditional lubricants (e.g. graphite and dichalcogenides) are being improved and new lubricating materials (e.g. amorphous carbons) are being discovered with the aid of recent developments in deposition processes and surface analytical methods. Ion bombardmenttreatments have increased film adhesion, lowered friction coefficients and enhanced the wearlife of MoS2films, as well as created new forms of lubricating carbons (amorphous, polymeric and diamond-like). Composite films and multilayer coating treatments are providing extra protection for surface and films against environmental degradation. Ultralow friction coefficients (<0.01) have been achieved with MoS 2 as well as diamond-like carbon films. Material selection, in some cases (e.g. thin metal films), can nowbe made basedon scientific principles, although many tribomaterials are still being developed by trialand error methods.

Research on Ti-GLC/TiCN/TiN composite multilayer coating with ultra-low friction coefficient in various environments

2021 ◽  
Vol 26 ◽  
pp. 101426
Author(s):  
Weiqing Yan ◽  
Zhiqiang Zhang ◽  
Yifan Zhang ◽  
Lin Chen ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Multilayer Coating ◽  
Low Friction

Design of a Type of Lift Coating Machine

2014 ◽  
Vol 599-601 ◽  
pp. 268-271
Author(s):  
Ze Lun Li ◽  
You Jun Huang ◽  
Xian Ling Deng
Keyword(s):  
Silicon Wafer ◽  
Multilayer Coating ◽  
Real Life ◽  
Glass Ceramics ◽  
Coating Process ◽  
Software System ◽  
Solid Materials ◽  
Hardware System ◽  
Lift Height ◽  
Coating Matrix

Designed a type of lift coating machine including its structure, hardware system and software system. The lift coating machine we design is a kind of wet coating equipment, which has some advantages such as lift speed, lift height, impregnate time, multilayer coating, continuous and adjustable deposition interval time. It does not need complicated vacuum environment, easy to be achieved in real life. In addition, it has no special requirements for coating matrix, which can run stably and significantly improve the precision and efficiency of coating. The lift coating machine we designed is suitable for the coating process of all solid materials such as silicon wafer, wafer, glass, ceramics, metal and so on, and it has extensive potentials in the coating market.

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