Comparative study of the surface oxidation behaviour of amorphous and crystallized Fe67Co18B14Si1 metallic glass

1989 ◽  
Vol 24 (6) ◽  
pp. 2239-2244 ◽  
Author(s):  
D. J. de Wet ◽  
G. N. Van Wyk
Keyword(s):  
Metallic Glass ◽  
Comparative Study ◽  
Surface Oxidation ◽  
Oxidation Behaviour

Effect of surface oxidation on the nm-scale wear behavior of a metallic glass

2011 ◽  
Vol 109 (8) ◽  
pp. 083515 ◽  
Author(s):  
A. Caron ◽  
P. Sharma ◽  
A. Shluger ◽  
H.-J. Fecht ◽  
D. V. Louzguine-Luzguin ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Wear Behavior ◽  
Surface Oxidation ◽  
Effect Of Surface

Surface Oxidation Behaviour of Cubic BN Powders

2014 ◽  
Vol 602-603 ◽  
pp. 544-547
Author(s):  
Xin Yan Yue ◽  
Yue Zhang ◽  
Jian Jun Wang ◽  
Wei Wang ◽  
Hong Qiang Ru
Keyword(s):  
Heat Treatment ◽  
Surface Oxidation ◽  
Mass Gain ◽  
Oxidation Behaviour ◽  
Experimental Results ◽  
Oxidation Temperature ◽  
Oxidation Reactions ◽  
Oxidation Treatment ◽  
Treatment Processes

In order to improve the sinterability of the cBN, surface oxidation treatment was conducted to form a B2O3 film on the surface of the cBN powders. The cBN powders (d50 = 7.5 μm) were used as original powders. The heat treatment processes were 500, 800, 900, 950, 980 and 1000 °C holding for 30 minutes, respectively. The oxidation reactions which probably happened were calculated based on the thermodynamics. The experimental results showed that the oxidation starting temperature of cBN powders was higher than 800 °C. The higher the oxidation temperature, the greater the mass gain of the cBN powders.

scholarly journals Microstructure and oxidation behaviour of Euro IV diesel engine soot: a comparative study with synthetic model soot substances

2004 ◽  
Vol 90 (1-2) ◽  
pp. 127-132 ◽  
Author(s):  
D.S Su ◽  
R.E Jentoft ◽  
J.-O Müller ◽  
D Rothe ◽  
E Jacob ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Comparative Study ◽  
Oxidation Behaviour ◽  
Synthetic Model

Mössbauer Spectroscopy Evidence for Phase Selectivity in Excimer Laser Induced Amorphization of Thermally Annealed FeCoBSi Metallic Glass

1996 ◽  
Vol 51 (5-6) ◽  
pp. 389-395
Author(s):  
M. Sorescu ◽  
E.T. Knobbe
Keyword(s):  
Metallic Glass ◽  
Excimer Laser ◽  
Surface Oxidation ◽  
Alloy System ◽  
Laser Pulses ◽  
Magnetic Texture ◽  
Induced Magnetic Anisotropy ◽  
Bulk Data ◽  
Phase Selectivity ◽  
Excimer Laser Irradiation

Abstract Pulsed excimer laser irradiation effects (λ = 308 nm, τ = 10 ns, w = 3 J/cm2 , N = 2 laser pulses/spot, repetition rate 1 Hz) on the magnetic properties and phase composition of thermally annealed Fe66Co18B15Si1 metallic glass have been studied by transmission and conversion electron Möss-bauer spectroscopy (CEMS). Radiation-driven surface modifications were examined by scanning electron microscopy (SEM). Excimer laser induced amorphization was observed in partially crystallized Fe66Co18B15Si1 samples (T A = 648 K, t A = 1 hour) and was found to be accompanied by the development of laser-induced magnetic anisotropy. In totally crystallized Fe66Co18B15Si1 specimens (T A = 723 K, = 1 hour), the effect of excimer laser induced amorphization exhibited phase selectivity with respect to the crystalline components of the alloy system. When compared to bulk data, a different behavior of the surface magnetic texture and relative abundance of alloy phases was observed. The laser-induced phase transformation of thermally annealed Fe66Co18B15Si1 specimens was shown to consist of partial amorphization and surface oxidation of the irradiated material.

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