Kinetics of particle heating during the plasma-deposition of a thermally reactive Ni-Al powder

1978 ◽  
Vol 17 (9) ◽  
pp. 678-682 ◽  
Author(s):  
A. G. Tsidulko ◽  
F. I. Kitaev
Keyword(s):  
Plasma Deposition ◽  
Al Powder ◽  
Particle Heating ◽  
Kinetics Of

Effect of carbon content on the oxidation resistance and kinetics of MgO-C refractory with the addition of Al powder

2020 ◽  
Vol 46 (3) ◽  
pp. 3091-3098 ◽  
Author(s):  
Zhaoyang Liu ◽  
Jingkun Yu ◽  
Shuaijun Yue ◽  
Danbin Jia ◽  
Endong Jin ◽  
...  
Keyword(s):  
Carbon Content ◽  
Oxidation Resistance ◽  
Al Powder ◽  
Kinetics Of

Preparation and plasma deposition of an NiCr-Al powder composite

1980 ◽  
Vol 19 (3) ◽  
pp. 176-178
Author(s):  
Yu. S. Borisov ◽  
Yu. A. Sidorenko ◽  
V. R. Kalinovskii ◽  
I. N. Gorbatov ◽  
V. V. Rishin ◽  
...  
Keyword(s):  
Plasma Deposition ◽  
Powder Composite ◽  
Al Powder

RF and Microwave Plasma Deposition of Polymer Films: Effect of Frequency

1986 ◽  
Vol 68 ◽  
Author(s):  
R. Claude ◽  
M. Moisan ◽  
M. R. Wertheimer
Keyword(s):  
High Frequency ◽  
Microwave Plasma ◽  
Plasma Deposition ◽  
Argon Plasma ◽  
Plasma Technology ◽  
Low Frequencies ◽  
Plasma Polymers ◽  
Deposition Kinetics ◽  
Order Of Magnitude ◽  
Kinetics Of

AbstractThe surface wave (SW) plasma technology is used to investigate possible frequency effects in the deposition kinetics of plasma polymers over the range 100–915 MHz.Hydrocarbon and fluorocarbon monomers are excited by a SW produced argon plasma, at a total pressure of 50 mTorr, under various monomer flows.Using Yasuda's normalization procedure, we have so far been unable to distinguish frequency dependent deposition in this high frequency (HF) regime.However, the present data indicate substantially (an order of magnitude) higher deposition rates than those reported by Gazicki and Yasuda for low frequencies.

Reaction kinetics of phase formation in Nb-Al powder metallurgy processed wire

1989 ◽  
Vol 25 (2) ◽  
pp. 2093-2096 ◽  
Author(s):  
K.R. Coffey ◽  
K. Barmak ◽  
D.A. Rudman ◽  
C.L.H. Thieme ◽  
S. Foner
Keyword(s):  
Powder Metallurgy ◽  
Reaction Kinetics ◽  
Phase Formation ◽  
Al Powder ◽  
Kinetics Of

The combustion of clouds of coal particles in shock-heated mixtures of oxygen and nitrogen

1971 ◽  
Vol 322 (1549) ◽  
pp. 207-221 ◽  
Keyword(s):  
Shock Tube ◽  
Thermal Explosion ◽  
Oxygen Transport ◽  
Particle Surface ◽  
Solid Particles ◽  
Heating Rates ◽  
Coal Particles ◽  
Particle Heating ◽  
Kinetics Of ◽  
Thermal Explosion Theory

A shock tube method is described for studying the combustion of a cloud of coal particles under pressure. Two important types of reaction are observed. First, the preflame reaction, in which particle heating rates are controlled by conduction from the gas together with the exothermal release of heat at the particle surface. This stage always precedes the second type of reaction which is characterized by a highly luminous flame. Here solid particles of less than 80 μ m and their products of volatilization appear to burn simultaneously and completely in less than 2 ms. The kinetics of the two types of reaction are analysed by means of thermal explosion theory and oxygen transport rates respectively.

Kinetics of Plasma Deposition of a-Si:H Films

1983 ◽  
Vol 22 (Part 2, No. 9) ◽  
pp. L562-L564 ◽  
Author(s):  
Sadayoshi Hotta ◽  
Hiroaki Okamoto ◽  
Yoshihiro Hamakawa
Keyword(s):  
Plasma Deposition ◽  
Kinetics Of

Alloying Kinetics of Mechanically Activated Mn-Al Powder Compacts in Aluminum Melt

2006 ◽  
Vol 45 (4) ◽  
pp. 373-378 ◽  
Author(s):  
R. Molaei ◽  
M.R. Aboutalebi ◽  
M. Soltanieh
Keyword(s):  
Aluminum Melt ◽  
Al Powder ◽  
Powder Compacts ◽  
Alloying Kinetics ◽  
Kinetics Of

Direct observations of radiation-enhanced transformations in glass

1983 ◽  
Vol 41 ◽  
pp. 354-355
Author(s):  
J. F. DeNatale ◽  
D. G. Howitt
Keyword(s):  
Glass Matrix ◽  
Diffusion Mechanism ◽  
Bubble Formation ◽  
Silicate Glasses ◽  
Phase Decomposition ◽  
Direct Observations ◽  
Thin Foils ◽  
Oxygen Bubble ◽  
Electron Energy Loss ◽  
Kinetics Of

The electron irradiation of silicate glasses containing metal cations produces various types of phase separation and decomposition which includes oxygen bubble formation at intermediate temperatures figure I. The kinetics of bubble formation are too rapid to be accounted for by oxygen diffusion but the behavior is consistent with a cation diffusion mechanism if the amount of oxygen in the bubble is not significantly different from that in the same volume of silicate glass. The formation of oxygen bubbles is often accompanied by precipitation of crystalline phases and/or amorphous phase decomposition in the regions between the bubbles and the detection of differences in oxygen concentration between the bubble and matrix by electron energy loss spectroscopy cannot be discerned (figure 2) even when the bubble occupies the majority of the foil depth.The oxygen bubbles are stable, even in the thin foils, months after irradiation and if van der Waals behavior of the interior gas is assumed an oxygen pressure of about 4000 atmospheres must be sustained for a 100 bubble if the surface tension with the glass matrix is to balance against it at intermediate temperatures.

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