Reactions in fused salts. VII. Oxidation of sulphite ions with oxygen in a melt of eutectic mixture of lithium and potassium chlorides

1973 ◽  
Vol 38 (12) ◽  
pp. 3589-3594 ◽  
Author(s):  
P. Pacák ◽  
J. Novák ◽  
I. Sláma
Keyword(s):  
Eutectic Mixture ◽  
Fused Salts

A TEM investigation of a hyper-eutectic lead-tin alloy

1988 ◽  
Vol 46 ◽  
pp. 562-563
Author(s):  
John A. Sutliff
Keyword(s):  
Volume Diffusion ◽  
Eutectic Mixture ◽  
Precipitation Reaction ◽  
Directionally Solidified ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Diffusion Controlled ◽  
Discontinuous Precipitation Reaction ◽  
Controlled Precipitation

Near-eutectic Pb-Sn alloys are important solders used by the electronics industry. In these solders, the eutectic mixture, which solidifies last, is the important microstructural consituent. The orientation relation (OR) between the eutectic phases has previously been determined for directionally solidified (DS) eutectic alloys using x-ray diffraction or electron chanelling techniques. In the present investigation the microstructure of a conventionally cast, hyper-eutectic Pb-Sn alloy was examined by transmission electron microscopy (TEM) and the OR between the eutectic phases was determined by electron diffraction. Precipitates of Sn in Pb were also observed and the OR determined. The same OR was found in both the eutectic and precipitation reacted materials. While the precipitation of Sn in Pb was previously shown to occur by a discontinuous precipitation reaction,3 the present work confirms a recent finding that volume diffusion controlled precipitation can also occur.Samples that are representative of the solder's cast microstructure are difficult to prepare for TEM because the alloy is multiphase and the phases are soft.

Complex ions in fused salts

1960 ◽  
Author(s):  
Harmon Mark Garfinkel
Keyword(s):  
Complex Ions ◽  
Fused Salts

ChemInform Abstract: CATALYTIC CURRENTS IN FUSED SALTS- DISCHARGE MECHANISM OF NITRITE IN MOLTEN ALKALI NITRATES(II)

1978 ◽  
Vol 9 (31) ◽  
Author(s):  
F. PALMISANO ◽  
L. SABBATINI ◽  
E. DESIMONI ◽  
P. G. ZAMBONIN
Keyword(s):  
Discharge Mechanism ◽  
Fused Salts
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