Microstructure Analysis of Ti-Al Intermetallic Compound Aluminized Layer Generated in Low Temperature

2014 ◽  
Vol 638-640 ◽  
pp. 1508-1511 ◽  
Author(s):  
Xiu Chun Wang ◽  
Jun Wei ◽  
Lin Lin Zhang ◽  
Xi Bin Yi ◽  
Jing Zhang ◽  
...  

By using mechanical energy aided aluminizing process, an aluminized layer of 20~180μm was obtained on titanium plate at a low temperature of 650~700°C for 3 hours. The aluminized layer consists of an outer layer of single-phase aluminium, an inner layer of (Al,Si)3Ti intermetallic compound and aluminium bipolar layer, the silicon element is riched in the Al3Ti intermetallic compound.

Author(s):  
H. Hillebrecht ◽  
V. Kuntze ◽  
K. Gebhardt

AbstractSingle phase samples of the new intermetallic compound Mo


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Chongshan Yin ◽  
Qicheng Liu ◽  
Qing Liu

Abstract How to convert heat energy into other forms of usable energy more efficiently is always crucial for our human society. In traditional heat engines, such as the steam engine and the internal combustion engine, high-grade heat energy can be easily converted into mechanical energy, while a large amount of low-grade heat energy is usually wasted owing to its disadvantage in the temperature level. In this work, for the first time, the generation of mechanical energy from both high- and low-temperature steam is implemented by a hydrophilic polymer membrane. When exposed to water vapor with a temperature ranging from 50 to 100 °C, the membrane repeats rolling from one side to another. In nature, this continuously rolling of membrane is powered by the steam, like a miniaturized “steam engine”. The differential concentration of water vapor (steam) on the two sides of the membrane generates the asymmetric swelling, the curve, and the rolling of the membrane. In particular, results suggest that this membrane based “steam engine” can be powered by the steam with a relatively very low temperature of 50 °C, which indicates a new approach to make use of both the high- and low-temperature heat energy.


2019 ◽  
Vol 9 (8) ◽  
pp. 1609 ◽  
Author(s):  
A. K. M. Ashiquzzaman Shawon ◽  
Soon-Chul Ur

Aluminum antimonide is a semiconductor of the Group III-V order. With a wide indirect band gap, AlSb is one of the least discovered of this family of semiconductors. Bulk synthesis of AlSb has been reported on numerous occasions, but obtaining a single phase has always proven to be extremely difficult. This work reports a simple method for the synthesis of single-phase AlSb. Subsequently, consolidation was done into a near single-phase highly dense semiconductor in a form usable for thermoelectric applications. Further, the thermoelectric properties of this system are accounted for the first time. In addition, the mechanical properties of the intermetallic compound are briefly discussed for a possibility of further use.


2018 ◽  
Vol 54 (25) ◽  
pp. 3178-3181 ◽  
Author(s):  
Atsushi Inoishi ◽  
Akira Nishio ◽  
Yuto Yoshioka ◽  
Ayuko Kitajou ◽  
Shigeto Okada

We report a battery made from a single material using Li1.5Cr0.5Ti1.5(PO4)3 as the anode, cathode and electrolyte.


1998 ◽  
Vol 62 (8) ◽  
pp. 761-765 ◽  
Author(s):  
Masahiko Kato ◽  
Hisaoki Sasano ◽  
Kazuhiro Honma ◽  
Toshiyuki Suzuki

2020 ◽  
Vol 14 (2) ◽  
pp. 168-172
Author(s):  
Marija Milanovic ◽  
Zoran Obrenovic ◽  
Ivan Stijepovic ◽  
Ljubica Nikolic

Boehmite nanocrystalline powders were obtained by neutralization of Bayer liquor at 70?C with addition of glucose. Temperature of the neutralization induced formation of the flower-like morphology of the nanopowders. XRD and FTIR results confirmed that the single phase boehmite is formed without any other impurities. Calcination at 500?C led to the formation of transition -alumina with the retention of the flower-like morphology. Both as-synthesised and calcined powders possessed high specific surface area with mesopores between 3-6 nm in diameter. Relatively low temperature of neutralization as well as the use of low cost and ecologically friendly glucose as a surfactant are very promising for the possible application in the industrial production of alumina nanopowders.


2019 ◽  
Vol 102 (12) ◽  
pp. 7217-7224 ◽  
Author(s):  
Lun Feng ◽  
William G. Fahrenholtz ◽  
Gregory E. Hilmas

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