In situ surface treatment of nanocrystalline MFe2O4 (M=Co, Mg, Mn, Ni) spinel ferrites using linseed oil

<p>Welded joints is adopted rather than bolted joints for megastructure’s connections because the former can carry large force. However, the former has several problems, such as quality control of welding in situ, which the latter can solve. By contrast, as the load transfer ratio of each bolt becomes uneven proportionally to the number of bolts, local slip around extreme bolts occurs before the whole slip. Extreme bolts to which a large shear force is applied will break before other bolts. For utilizing the strength of all bolts, the problem is solved by improving shear deformation capacity in faying surface with novel surface treatment. Here, the treatment concepts were explored, and the coating’s effectiveness was evaluated through friction tests. The deformation capacity can be twice or more than that of conventional treatment, and the slip coefficient doesn’t depend on contact pressure. These features have the advantage to give stable slip behaviour.</p>

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In situ Mg surface treatment of p-type GaN grown by ammonia-molecular-beam epitaxy for efficient Ohmic contact formation

Applied Physics Letters ◽

10.1063/1.1543233 ◽

2003 ◽

Vol 82 (5) ◽

pp. 736-738 ◽

Cited By ~ 13

Author(s):

H. Tang ◽

J. A. Bardwell ◽

J. B. Webb ◽

S. Rolfe ◽

Y. Liu ◽

...

Keyword(s):

Molecular Beam Epitaxy ◽

Surface Treatment ◽

Ohmic Contact ◽

Molecular Beam ◽

Contact Formation ◽

P Type ◽

Ohmic Contact Formation

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Research Progress of Surface Modification of Aluminum Powders for Corrosion Protection

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.80-81.70 ◽

2011 ◽

Vol 80-81 ◽

pp. 70-75 ◽

Cited By ~ 1

Author(s):

Bin Du ◽

Shi Sheng Zhou ◽

Na Li Li ◽

Nan Wang

Keyword(s):

Surface Modification ◽

Surface Treatment ◽

Corrosion Inhibition ◽

In Situ Polymerization ◽

Research Progress ◽

Research Directions ◽

Aluminum Powders ◽

Plastic Industry ◽

Weather Resistance

As an important metallic powder, aluminum powders are used widely in coating, inks and plastic industry. However, it is necessary to treat the aluminum powders first to improve the properties of weather-resistance, anti-corrosion in acidic or basic media and compatibility with resin. The methods of surface treatment of aluminum powders including encapsulation and using corrosive inhibitors are summarized. The kinds of corrosive inhibitors used in the method of corrosion inhibition and their mechanisms are also reviewed. The processes and technologies of inorganic passivation, encapsulation by polymer absorption and by in situ polymerization are introduced. The research directions of aluminum powders are also presented.

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Effects of Oil Wettability on the Performance of a Cyclone-Type Oil Separator

International Journal of Air-Conditioning and Refrigeration ◽

10.1142/s2010132518500104 ◽

2018 ◽

Vol 26 (01) ◽

pp. 1850010

Author(s):

Joon Ahn ◽

Seongil Jang

Keyword(s):

Experimental Data ◽

Surface Treatment ◽

Oil Recovery ◽

Separation Efficiency ◽

Refrigeration System ◽

High Separation

The effects of oil wettability on the performance of a cyclone-type oil separator was studied through in situ experimentation and in a real refrigeration system. Based on previous research, the geometry of the oil separator in the present study was designed with an oil recovery device installed at its bottom to mount it on the actual refrigerator. The performance of the oil separator without surface treatment was predicted by applying design correlations proposed in the open literature, which were then compared with the experimental data. Through surface treatment, oleophilic or oleophobic properties were given to the inner wall and helix of the oil separator, and its performance was measured in a real refrigeration system. Oil wettability had a great effect on the performance of the oil separator, and in order to obtain high separation efficiency, oleophilic properties were found to be advantageous not only in the inner wall but also in the helix.

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