Indirect measurement of inclined sedimentation for ash in coal liquids at high temperature and pressure by x-ray photography

1981 ◽  
Vol 20 (2) ◽  
pp. 165-168 ◽  
Author(s):  
K. R. Vaidyanathan ◽  
Joseph D. Henry ◽  
Francis H. Verhoff
Keyword(s):  
High Temperature ◽  
Indirect Measurement ◽  
X Ray ◽  
High Temperature And Pressure ◽  
Coal Liquids ◽  
Temperature And Pressure

Collimator for inelastic x-ray scattering experiments at high temperature and pressure conditions

2004 ◽  
Vol 24 (4) ◽  
pp. 463-469 ◽  
Author(s):  
S. Falconi ◽  
G. Monaco ◽  
W. A. Crichton ◽  
M. Mezouar ◽  
R. Verbeni
Keyword(s):  
High Temperature ◽  
X Ray ◽  
X Ray Scattering ◽  
High Temperature And Pressure ◽  
Temperature And Pressure ◽  
Ray Scattering

Effect of Shot Blasting on Oxidation of TP304 Austenitic Stainless Steel in Steam

2011 ◽  
Vol 317-319 ◽  
pp. 179-184
Author(s):  
Zhi Wu Wang ◽  
Yan Lei ◽  
Wei Wang ◽  
Yi Wei Wu ◽  
Jie Wang
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Oxide Film ◽  
Oxidation Resistance ◽  
Oxidation Kinetics ◽  
Steam Oxidation ◽  
Shot Blasting ◽  
X Ray ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

In this research, TP304 was treated by shot blasting under the pressure of 0.65MPa. The stainless steel shots used in the shot blasting experiment were in different sizes, separately with diameter 0.6mm and 1.2mm. To investigate the effect of shot blasting on the oxidation resistance behavior, steam oxidation experiments have been conducted to both original and shot blasting treating TP304s in 650°C and 25MPa. Then oxidation kinetics curve of each sample was measured by discontinuous weight method, morphology of oxide film was observed through SEM(scanning electron microscope), the component of the oxidation was measured by XRD(X-ray Diffraction), and the variation of Cr content in the oxide film was analyzed by EDS(energy-dispersive X-ray spectroscopy). According to the results, Oxidation kinetics curve in high temperature and pressure, expressed in original and shot blasting treating TP304s, both follow the principle of quasi-parabola and shot blasting can largely enhance TP304’s steam oxidation resistance in high temperature and pressure.

Synthesis of Ba(MgxNb1-x)O3 Nanoparticles by a Glycothermal Process

2006 ◽  
Vol 324-325 ◽  
pp. 1285-1288
Author(s):  
Rak Hee Kim ◽  
Jung Hoon Son ◽  
Dong Sik Bae
Keyword(s):  
High Temperature ◽  
Potassium Hydroxide ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Temperature And Pressure ◽  
Metal Nitrates ◽  
Aqueous Potassium Hydroxide ◽  
Temperature And Pressure ◽  
Diffraction Patterns ◽  
Average Size

Ba(MgxNb1-x)O3 nanoparticles were prepared under high temperature and pressure conditions by precipitation from metal nitrates with aqueous potassium hydroxide. Ba(MgxNb1-x)O3 nanoparticles were obtained in the temperature range of 170185 for 4 h. TEM and X-ray diffraction patterns showed that the synthesized particles were crystalline. The average size and size distribution of the synthesized particles were around 100 nm and broad, respectively.

Synthesis of K2SiSi3O9 with silicon in 4- and 6-coordination

1975 ◽  
Vol 40 (312) ◽  
pp. 401-404 ◽  
Author(s):  
N. Kinomura ◽  
S. Kume ◽  
M. Koizumi
Keyword(s):  
High Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vitreous Material ◽  
Natural Crystal ◽  
High Temperature And Pressure ◽  
Temperature And Pressure ◽  
Diffraction Patterns ◽  
Three Phases

SummaryTwo kinds of vitreous material with composition K2GeSi3O9 and K2Si4O9 were treated under conditions of high temperature and pressure. The X-ray diffraction patterns of the products were similar to that of K2TiSi3O9, which has the wadeite, K2ZrSi3O9, structure.A natural crystal of K-feldspar was also treated under the same conditions. The product was found to consist of three phases, coesite, kyanite, and the above-mentioned K2Si4O9. Since Zr ions in wadeite are in a 6-coordinated site, one-quarter of Si ions in K2Si4O9 are considered to be in 6-coordination. This is the first silicate in which Si ions occupy sites of 4- and 6-coordinations in one crystal at the same time.

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