Preparation and characterization of Al11Cr4 phase by diffusion of Al/Cr composite film

2014 ◽  
Vol 610 ◽  
pp. 492-497 ◽  
Author(s):  
Hang Wu ◽  
Min Zhang ◽  
Bajin Xu ◽  
Guoping Ling
Keyword(s):  
Author(s):  
Qiuhua Yuan ◽  
Jianbo Wu ◽  
Caoping Qin ◽  
Zhiwei Guo ◽  
Jiayu Liu ◽  
...  

Vacuum ◽  
1999 ◽  
Vol 52 (4) ◽  
pp. 415-420 ◽  
Author(s):  
H. Biederman ◽  
V. Stundžia ◽  
D. Slavı́nská ◽  
J. Glosı́k

2016 ◽  
Vol 8 (2) ◽  
pp. 123-130
Author(s):  
FB Quader ◽  
RA Khan ◽  
MA Islam ◽  
S Saha ◽  
KN Sharmin

Green technology like biodegradable films using natural polymer is an obvious need of today. Attempt of this experiment was aimed at development and characterization of a biodegradable colored film based on starch and chitosan by using Acacia catechu. Chitosan reinforced starch based biodegradable composite film was prepared by casting. The chitosan content in the films was varied from 20-80 % (w/w). Tensile strength (TS) was improved significantly with the addition of chitosan but the elongation at break (EB %) of the composite decreased. With the addition of the Acacia catechu, tensile strength of the composites improved more. The acacia content of the film was varied from 0.05-0.2(w/w). The good thermal stability of this prepared film was confirmed by thermo-gravimetric analysis. Structural characterization was done by Fourier transform infrared radiation spectroscopy. Surface morphology of the composite film was examined by scanning electron microscope (SEM) which suggested sufficient homogenization of starch, chitosan and Acacia catechu. Water uptake was found lower for final composites in the comparison to starch/chitosan and chitosan film. The satisfactory rate of degradation in the soil is expected that the final composite film within less than 6 months. The developed films intended to use as the alternative of synthetic non biodegradable colored packaging films.J. Environ. Sci. & Natural Resources, 8(2): 123-130 2015


1996 ◽  
Vol 458 ◽  
Author(s):  
S. Govindarajan ◽  
J. J. Moore ◽  
T. R. Ohno ◽  
J. Disam

ABSTRACTA novel coating architecture is being examined for enhancing the high temperature, oxidation resistance of molybdenum. The coating incorporates a thin, composite film of MoSi2+1.96 mole fraction SiC in order to match the coefficients of thermal expansion between the molybdenum substrate and the coating. Since the as-deposited composite film is amorphous in nature, a diffusion anneal treatment is carried out at 1000°C to achieve crystallization of the film. In this paper, a detailed examination of the Mo-MoSi2+1.96 SiC interface will be presented. The microstructural features of the composite films will be discussed based on electron microscopy, auger electron spectroscopy (AES), and X-ray diffraction analysis. Finally, a novel diffusion barrier layer for minimizing silicon and carbon diffusion from the coating to the substrate will be discussed.


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