scholarly journals Surface Treatment of Fine Powder. Noble Metal Film Formation with Ultrafine Particles.

1996 ◽  
Vol 47 (11) ◽  
pp. 910-913 ◽  
Author(s):  
Masaaki ODA
Keyword(s):  
Surface Treatment ◽  
Noble Metal ◽  
Ultrafine Particles ◽  
Metal Film ◽  
Film Formation ◽  
Fine Powder

Preparation of Ultra-Fine Powder Using Supercritical Fluids: A Review

2011 ◽  
Vol 148-149 ◽  
pp. 509-515
Author(s):  
De Dong Hu ◽  
Wei Qiang Wang ◽  
Zhi Quan Zhao ◽  
Gui Min Zhang ◽  
Wen Qin Bai ◽  
...  
Keyword(s):  
Ultrafine Particles ◽  
Surface Effect ◽  
Quantum Effect ◽  
Fine Powder ◽  
Control Measures ◽  
Powder Materials ◽  
Supercritical Fluid Technology ◽  
Particle Preparation ◽  
And Control ◽  
Near Future

The size of ultrafine particles ranges between 1~1000nm, including metal, non-metallic, organic, inorganic and biological powder materials. Because of its inherent surface effect, small size effect and quantum effect, it has special optical properties, thermal properties, magnetic properties and mechanical properties which had been widely used in various industrial fields. Supercritical fluid technology has been used to obtain ultra-fine powder of several kind of materials. This work is focused on the systematic production of ultra-fine powder using RESS and SAS process. A systematic summary is made and different measures adopted according to the related circumstances are presented. We also summarize the effect of the process parameters of RESS and SAS process. The ongoing and more extensive research on mechanism and control measures of size, morphology and size distribution of particle should provide a better understanding of particle formation mechanism and achieve the goal of integrated use of different measures to control particle preparation process in the near future.

Photochemical deposition of noble metal ultrafine particles onto liposomes

1997 ◽  
Vol 7 (9) ◽  
pp. 1837-1840 ◽  
Author(s):  
Tomoo Sato ◽  
Tetsuya Ito ◽  
Hiroshi Iwabuchi ◽  
Yoshiro Yonezawa
Keyword(s):  
Noble Metal ◽  
Ultrafine Particles ◽  
Photochemical Deposition

scholarly journals Noble Metal Nanoparticles in Pectin Matrix. Preparation, Film Formation, Property Analysis, and Application in Electrocatalysis

ACS Omega ◽  
2020 ◽  
Vol 5 (37) ◽  
pp. 23909-23918
Author(s):  
Joanna Dolinska ◽  
Marcin Holdynski ◽  
Piotr Pieta ◽  
Wojciech Lisowski ◽  
Tomasz Ratajczyk ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Noble Metal ◽  
Film Formation ◽  
Noble Metal Nanoparticles ◽  
Property Analysis ◽  
Matrix Preparation ◽  
Formation Property

scholarly journals Surface Treatment of Fine Powder. New Surface Treatment of Powders by Sputtering.

1996 ◽  
Vol 47 (11) ◽  
pp. 900-904 ◽  
Author(s):  
Eiki TAKESHIMA ◽  
Kaoru KOJIMA ◽  
Takashi SHIROKURA
Keyword(s):  
Surface Treatment ◽  
Fine Powder

Ion beam induced enhancement of noble metal film adhesion on sapphire

1986 ◽  
Vol 5 (6) ◽  
pp. 659-661 ◽  
Author(s):  
K. R. Padmanabhan ◽  
J. Chevallier ◽  
G. Sørensen
Keyword(s):  
Noble Metal ◽  
Metal Film ◽  
Ion Beam ◽  
Film Adhesion

scholarly journals Discoloration Resistance of Electrolytic Copper Foil Following 1,2,3-Benzotriazole Surface Treatment with Sodium Molybdate

Coatings ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 427 ◽  
Author(s):  
Dong-Jun Shin ◽  
Yu-Kyoung Kim ◽  
Jeong-Mo Yoon ◽  
Il-Song Park
Keyword(s):  
Surface Treatment ◽  
Photoelectron Spectroscopy ◽  
Copper Foil ◽  
Deposition Time ◽  
Film Formation ◽  
Electrochemical Corrosion ◽  
Sodium Molybdate ◽  
Surface Characteristics ◽  
Protective Film ◽  
Electrolytic Copper

The copper which an important component in the electronics industry, can suffer from discoloration and corrosion. The electrolytic copper foil was treated by 1,2,3-benzo-triazole (BTA) for an environmentally friendly non-chromate surface treatment. It was designed to prevent discoloration and improve corrosion resistance, consisted of BTA and inorganic sodium molybdate (Na2MoO4). Also the ratio of the constituent compounds and the deposition time were varied. Electrochemical corrosion of the Cu-BTA was evaluated using potentiodynamic polarization. Discoloration was analyzed after humidity and heat resistance conditioning. Surface characteristics were evaluated using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Increasing corrosion potential and decreasing current density were observed with increasing Na2MoO4 content. A denser protective coating formed as the deposition time increased. Although chromate treatment under severe humidity (80% humidity, 80 °C, 100 h) provided the highest humidity resistance, surface treatment with Na2MoO4 had better heat discoloration inhibition under severe heat-resistant conditions (180 °C, 10 min). When BTA reacts with Cu to form the Cu-BTA-type insoluble protective film, Na2MoO4 accelerates the film formation without being itself adsorbed onto the film. Therefore, the addition of Na2MoO4 increased anticorrosive efficiency through direct/indirect action.

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