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An Investigation Of The Sintering Of Iron-Wire Compacts, George L. Vivian
An Investigation Of The Sintering Of Iron-Wire Compacts, George L. Vivian
Bachelors Theses and Reports, 1928 - 1970
A study of the sintering of iron has been made by observing the rate of bonding of iron wires wound on iron spools. The specimens were sintered at a constant temperature of 850c in vacuum furnaces capable of producing pressures of 10-5 to 10-4 mm of mercury, and the growth of the bond between wires was observed as a function of time.
It has been concluded that the volume-diffusion mechanism is strongly operating in the sintering of iron at 850c, but in an evacuated system, the evaporation-condensation mechanism also contributes to the sintering process.
Electrowinning With Amalgam Electrode, Ralph V. Anderson Jr.
Electrowinning With Amalgam Electrode, Ralph V. Anderson Jr.
Bachelors Theses and Reports, 1928 - 1970
Amalgam Metallurgy, a relatively new expression in the technology of metal extraction, was first chosen to describe certain new processes developed at the Duisburg Copper Works in Germany. The idea of using mercury, a costly and poisonous metal, as an intermediate in heavy chemical industry and in polarography are of recent origin; with the exception of a series of patents of little significance and occasional comments in the literature, the work is hardly known.
Determination Of The Activities Of Indium And Mercury And The Vapor Pressures Of Mercury Over These Amalgams From 0.00216 To 0.02494 Mole Fraction Indium At 25 C And From 0.00067 To 0.02410 Mole Fraction Indium At 70 C By Electromotive Force Measurements, Arthur H. Lutts
Bachelors Theses and Reports, 1928 - 1970
This work was performed to determine by experimental means the activities of both indium and mercury and the vapor pressures of mercury over these amalgams at 25 and 70 C.
Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson
Polarographic Analysis Applied To Metallurgical Solutions And Products, Donald W. Johnson
Bachelors Theses and Reports, 1928 - 1970
The polarograph has been applied to a large number of chemical and metallurgical analyses, and is especially applicable to solution control analysis and to the determination of minute quantities of ions in the presence of large amounts of other ions.
An Investigation Of The Gallium-Indium Binary System, Allen D. Kennedy
An Investigation Of The Gallium-Indium Binary System, Allen D. Kennedy
Bachelors Theses and Reports, 1928 - 1970
Twenty-four alloys, at 5 weight per cent or smaller intervals, were investigated by the thermal method. Very low temperatures had to be attained, because most of the alloy melts supercooled remarkably. Analysis showed only a liquidus and solidus line, and the solidus temperature was the same for each alloy.
The Alloys Of Gallium And Indium, C. J. Adams
The Alloys Of Gallium And Indium, C. J. Adams
Bachelors Theses and Reports, 1928 - 1970
Thermal analysis VIPS used to construct cooling and heating curves from which the phase diagram was determined. The data for the entire set of cooling curves were obtained by the use of mercury thermometers.
The Determination Of Aluminum In The Presence Of Manganese And Iron By The Use Of A Mercury Cathode, William R. Opie
The Determination Of Aluminum In The Presence Of Manganese And Iron By The Use Of A Mercury Cathode, William R. Opie
Bachelors Theses and Reports, 1928 - 1970
Since 1880, when Wolcott Gibbs made the suggestion that mercury could be used as a cathode in gravimetric electroanalysis, many articles have appeared in literature either criticizing the method or citing successful results which have been obtained by it.
Some Investigations On Quantitative Measurement Of Amalgamation, Charles Moore
Some Investigations On Quantitative Measurement Of Amalgamation, Charles Moore
Bachelors Theses and Reports, 1928 - 1970
Amalgamation is a process in which precious metals are collected by mercury. The exact way in which the mercury holds the other metals is not positively known. It is probable that a series of intermetallic compounds form. Very little work has been done so far on the theory of amalgamation.
The Quantitve Measurement Of Amalgamation, Robert A. Mcguire
The Quantitve Measurement Of Amalgamation, Robert A. Mcguire
Bachelors Theses and Reports, 1928 - 1970
Mercury has been known since ancient times. In fact, one mine, the "Almaden" in Spain, has been worked continuously since Roman times. It has been used during all this time for the recovery of free gold from gold concentrates, and from black sand and galena in concentrates from placer work.
The Effects Of Lime On The Amalgamation Of Gold., Rollien R. Wells
The Effects Of Lime On The Amalgamation Of Gold., Rollien R. Wells
Bachelors Theses and Reports, 1928 - 1970
An amalgam is an alloy of mercury with other metals, and amalgamation is the art of making or forming amalgams. In metallurgical language the word is limited to the means adopted for the recovery of gold and silver from their ores by the use of mercury.
A Metallurgical Study Of Gold Ores, Alfred A. Bloom
A Metallurgical Study Of Gold Ores, Alfred A. Bloom
Bachelors Theses and Reports, 1928 - 1970
Gold is widely distributed in the earth's crust in small quantities. Gold is found in nature in two forms; the element itself and the compound gold telluride. In all cases, silver in some proportion is an alloying constituent.