Thermal oxidation treatment of B2 iron aluminide for improved wear resistance

In this paper, the application of a high temperature thermal oxidation and annealing process to 4H-SiC PiN diodes with 35 μm thick drift regions is explored, the aim of which was to increase the carrier lifetime in the 4H-SiC. Diodes were fabricated using 4H-SiC material and underwent a thermal oxidation in dry pure O2 at 1550◦C followed by an argon anneal at the same temperature. Reverse recovery tests indicated a carrier lifetime increase of around 42% which is due to increase of excessive minority carriers in the drift region. The switching results illustrate that the use of this process is a highly effective and efficient way of enhancing the electrical characteristics of high voltage 4H-SiC bipolar devices.

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Fretting wear behavior of thermal-oxidation on titanium alloy in air and vacuum atmosphere

International Journal of Modern Physics B ◽

10.1142/s0217979221501356 ◽

2021 ◽

pp. 2150135

Author(s):

Liangliang Sheng ◽

Xiangtao Deng ◽

Hao Li ◽

Yuxuan Ren ◽

Guoqing Gou ◽

...

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Thermal Oxidation ◽

Wear Behavior ◽

Fretting Wear ◽

Partial Slip ◽

Ti6al4v Titanium Alloy ◽

Slip Regime ◽

Air Atmosphere ◽

Vacuum Atmosphere

In this work, an in-situ XPS analysis test combined self-designed high precision fretting wear tester was carried out to study the fretting wear behavior and the resulting tribo-oxidation of thermal-oxidation film on Ti6Al4V titanium alloy under the varied working atmosphere. The fretting-induced tribo-oxidation under the air and vacuum ([Formula: see text] Pa) environment was analyzed and its response on the resulting fretting wear resistance and damage mechanism was discussed. Results show that the working environment plays a significant role in the formation of tribo-oxidation and then determining the fretting wear resistance. Thermal-oxidation film in the vacuum atmosphere shows a better fretting wear resistance than that in the air atmosphere for all fretting regimes, except for partial slip regime (PSR) where there is an equivalent fretting wear resistance. Compared with the substrate Ti6Al4V titanium alloy, the thermal-oxidation film in the vacuum atmosphere performs a good protection for titanium alloy, especially for slip regime (SR), but not applied for air atmosphere.

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The effect of pre-oxidation treatment on the plasticity behavior of B2 iron aluminide

Vacuum ◽

10.1016/j.vacuum.2012.09.017 ◽

2013 ◽

Vol 90 ◽

pp. 10-16 ◽

Cited By ~ 4

Author(s):

K. Nowak ◽

M. Kupka

Keyword(s):

Iron Aluminide ◽

Oxidation Treatment

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Large enhancement of ultra-violet photoresponse of silicon-nanoparticle-embedded porous silicon thin films by rapid-thermal-oxidation treatment

Microelectronic Engineering ◽

10.1016/j.mee.2015.08.011 ◽

2015 ◽

Vol 148 ◽

pp. 70-73 ◽

Cited By ~ 5

Author(s):

Kuen-Hsien Wu ◽

Chong-Wei Li ◽

Jung-Hsuan Liu

Keyword(s):

Thin Films ◽

Porous Silicon ◽

Thermal Oxidation ◽

Ultra Violet ◽

Oxidation Treatment ◽

Silicon Nanoparticle ◽

Rapid Thermal Oxidation ◽

Silicon Thin Films ◽

Large Enhancement

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Surface damage mitigation of titanium and its alloys via thermal oxidation: A brief review

REVIEWS ON ADVANCED MATERIALS SCIENCE ◽

10.1515/rams-2019-0012 ◽

2019 ◽

Vol 58 (1) ◽

pp. 132-146 ◽

Cited By ~ 4

Author(s):

Naiming Lin ◽

Ruizhen Xie ◽

Jiaojuan Zou ◽

Jianfeng Qin ◽

Yating Wang ◽

...

Keyword(s):

Wear Resistance ◽

Corrosion Resistance ◽

Thermal Oxidation ◽

Chemical Industry ◽

Friction And Wear ◽

Weight Ratio ◽

High Strength ◽

Surface Damage ◽

Damage Mitigation ◽

And Performance

AbstractTitanium (Ti) and its alloys have been extensively applied in various fields of chemical industry, marine, aerospace and biomedical devices because of a specific combination of properties such as high strength to weight ratio, exceptional corrosion resistance and excellent biocompatibility. However, friction and wear, corrosion which usually occur on the surfaces of Ti-base components can lead to degradation in both properties and performance. Thermal oxidation (TO) of titanium and its alloys under certain conditions can accomplish significant improvements both in wear resistance and corrosion resistance, without special requirements for substrate geometries. In this review, the studies and applications of TO process in surface damage mitigation titanium and its alloys were reviewed and summarized.

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