scholarly journals Surface treatment techniques in optical fibers.

1989 ◽  
Vol 40 (1) ◽  
pp. 24-25
Author(s):  
Akira IINO
Keyword(s):  
Surface Treatment ◽  
Optical Fibers ◽  
Treatment Techniques

New surface treatment techniques to minimize copper alloy leaching in drinking water

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
Norikazu Sugaya
Keyword(s):  
Surface Treatment ◽  
Raw Materials ◽  
Organic Film ◽  
Forming Process ◽  
Mixed Acid ◽  
Treatment Techniques ◽  
Acid Washing ◽  
Washing Process ◽  
Film Forming ◽  
Materials Used

This new surface treatment is simple and easy as well as low in cost. The processes can even be performed by hand. Pharmaceutical raw materials used for the surface treatment, such as hydrochloric acid and nitric acid used in a mixed acid washing process and vegetable oil used in an organic film forming process, are easily obtained in many countries.

Effects of Surface Treatment for A5052 Aluminum Alloy on Adhesiveness between A5052 Aluminum Alloy and Engineering Plastics

2018 ◽  
Vol 941 ◽  
pp. 1815-1820
Author(s):  
Makoto Hino ◽  
Ryoichi Kuwano ◽  
Norihito Nagata ◽  
Kazuya Nagata ◽  
Teruto Kanadani
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Surface Treatment ◽  
Dissimilar Materials ◽  
Alloy Sheet ◽  
Treatment Techniques ◽  
Aluminum Sheets ◽  
Engineering Plastics ◽  
Joining Strength ◽  
Hot Melt

Effects of the surface-treated A5052 aluminum alloy on the adhesiveness of joining dissimilar materials, such as A5052 aluminum alloy sheet and polyamide resin sheet, was examined to manufacture a multi-material. Various surface treatments for the A5052 sheet were performed. The hot melt adhesive sheet comprising polyamide resin was used as the adhesive. The shear strength of adhered specimens was measured via tensile testing, and the shear strength was made to be the joining strength. Using various surface treatment techniques, oxidation films with different hole sizes and surface roughness were formed on the A5052 aluminum sheets. The joining strength of the surface-treated specimens was the lowest, whereas those joined via anode electrolysis exhibited the highest joining strength. These differences in joining strengths were owing to the anchor effect and chemical interfacial bonding force.

scholarly journals Nanostructure Formations and Improvement in Corrosion Resistance of Steels by Means of Pulsed Electron Beam Surface Treatment

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
K. M. Zhang ◽  
J. X. Zou ◽  
T. Grosdidier
Keyword(s):  
Corrosion Resistance ◽  
Electron Beam ◽  
Surface Treatment ◽  
316L Stainless Steel ◽  
Aisi 316L Stainless Steel ◽  
Pulsed Electron Beam ◽  
Treatment Techniques ◽  
Beam Surface ◽  
Low Costs ◽  
D2 Steel

The corrosion of steels has long been the topic for materials scientists. It is established that surface treatment is an efficient way to improve the corrosion resistance of steels without changing the bulk properties and with low costs. In the present paper, different kinds of surface treatment techniques for steels are briefly reviewed. In particular, the surface modification involving nanostructure formations of steels by using a low energy high pulsed electron beam (LEHCPEB) treatment is lightened in the case of an AISI 316L stainless steel and D2 steel. The overall results demonstrate the high potential of the LEHCPEB technique for improving the corrosion performance of steels.

Effect of Fiber Surface Treatment Techniques on Properties of Short Carbon Fiber Reinforced Phenol Formaldehyde Resin/Graphite Composite Bipolar Plate

2011 ◽  
Vol 393-395 ◽  
pp. 62-66
Author(s):  
Yan Ming Wang ◽  
Wei Qiang Wang ◽  
Ai Ju Li
Keyword(s):  
Carbon Fiber ◽  
Surface Treatment ◽  
Phenol Formaldehyde ◽  
Fiber Surface ◽  
Bipolar Plate ◽  
Graphite Composite ◽  
Bonding State ◽  
Treatment Techniques ◽  
Graphite Matrix ◽  
Fiber Surface Treatment

Research was done on carbon fiber surface treatment techniques on boundary-bonding state and properties of short carbon fiber reinforced phenol formaldehyde (PF) resin/graphite composite. By gas-phase oxidative surface treatment (GPOST)、gas-phase and liquid-phase oxidative surface treatment (GLPOST), carbon fiber and PF resin /graphite matrix is on weak boundary bonding state. The exerted outside stress can not be effectively transmitted, the composite strength is lower than that of PF resin/graphite matrix; By thick nitric acid liquid-phase oxidative surface treatment (TNALPOST) which the nitric acid has high density, fiber and matrix is on relatively weak boundary bonding state, the exerted outside stress can be effectively transmitted and composite strength can be raised on some degree. With carbon fiber content by TNALPOST 3.wt%~ 4.wt% and PF resin content 15.wt%, the composite can meet both the mechanical strength and electrical conductivity requirement on carbon filler/polymer bipolar plate by USA Department of Energy.

Assessment of Free Surface Treatment Techniques and Turbulence Models Influence Using the Slightly Compressible Flow Simulation

2007 ◽  
Author(s):  
C. Ciortan ◽  
C. Guedes Soares ◽  
J. Wanderley
Keyword(s):  
Free Surface ◽  
Surface Treatment ◽  
Compressible Flow ◽  
Flow Simulation ◽  
Turbulence Models ◽  
Slightly Compressible ◽  
Eddy Simulation ◽  
Treatment Techniques ◽  
Flow Parameters ◽  
Wigley Hull

A free surface, finite-difference code on collocated grids, using the Slightly Compressible Flow formulation, is used for simulating turbulent flow around a Wigley hull. Two free-surface treatment techniques are compared in terms of accuracy and influence on the flow parameters. The runs were performed in standard conditions of Froude numbers and the results were compared against experimental and numerical results. The initial version of the code used an interface-tracking technique and two turbulence models (Large Eddy Simulation and Baldwin-Lomax). The numerical scheme was marched in time using the factorized Beam and Warming implicit method. The second version of the code uses an interface-capturing technique. For the time being, the code uses a fixed grid on which the kinematic free surface equation is solved. The grid is identical to the initial grid used in the first set of formulations. Other changes in the code were necessary, the most important being the switch of the time-marching method to a 2nd order, explicit Runge-Kutta. The results show good agreement with the experimental results.

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