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Articles 61 - 83 of 83
Full-Text Articles in Physical Sciences and Mathematics
Some Effects Of The Addition Of Tellurium To Lead Alloys, Selim Ozsahin
Some Effects Of The Addition Of Tellurium To Lead Alloys, Selim Ozsahin
Bachelors Theses and Reports, 1928 - 1970
From the standpoint of its practical usefulness, the most important characteristics of metallic lead are its cheapness, resistance to corrosion, plasticity, high specific gravity, low melting point, and its ability to form alloys in which some properties are modified by the addition of other elements, while other properties remain the same.
The Theory Of Alloy Deposition And The Effect Of A Rotating Cathode Upon Such Deposition, With Special Attention To The Possibility Of Depositing Sterling Silver, Kenneth J. Stodden
The Theory Of Alloy Deposition And The Effect Of A Rotating Cathode Upon Such Deposition, With Special Attention To The Possibility Of Depositing Sterling Silver, Kenneth J. Stodden
Bachelors Theses and Reports, 1928 - 1970
In the past few years a great deal of attention has been given to the electrodeposition of alloys. For the main part, this investigation has been of scientific interest only; but in a few instances, such work has attained commercial importance.
An Experimental Investigation Of The Age Hardening Of Copper With Manganese Silicide, Ali Kozak
An Experimental Investigation Of The Age Hardening Of Copper With Manganese Silicide, Ali Kozak
Bachelors Theses and Reports, 1928 - 1970
The subject of the thesis was based upon the theory of precipitation or age hardening of the copper by the compound formed by the Manganese and silicon present in the ternary Cu-Mn-Si alloy. The effect of the heat treatment to such an alloy was to be studied and the best aging time and temperature was to be determined.
A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd
A Study Of The Concentration Of A Copper-Zinc Ore., Kenneth L. M. Dodd
Bachelors Theses and Reports, 1928 - 1970
The ore under investigation in this thesis is a copper-zinc ore which came from the state of New Mexico. The exact location is unobtainable. The purpose of the investigation was to determine the most effective means of concentration of the valuable minerals present in the ore.
Electrolysis Of Molten Mixtures Of Galena And Lead Chloride., Donald Q. Cole
Electrolysis Of Molten Mixtures Of Galena And Lead Chloride., Donald Q. Cole
Bachelors Theses and Reports, 1928 - 1970
Electrolysis of molten mixtures of lead chloride and galena was carried out under various conditions of temperature, time, composition, and current densities; without a diaphram, and with various diaphrams. Continuous runs, with necessary additions of lead sulfide and lead chloride to maintain a melt of the proper composition, were attempted on a small scale.
The Age Hardening Of Silver With Copper-Silicide, Joseph Edward Shaw
The Age Hardening Of Silver With Copper-Silicide, Joseph Edward Shaw
Bachelors Theses and Reports, 1928 - 1970
The successful application of the phenomenon of precipitation hardening to aluminum and copper has indicated the possibility of hardening all metals in the same way. The phenomenon of age hardening was discoveredin 1911, and since that time much research has been carried on in all parts of the world on various alloy systems.
A Study Of Solders, John D. Prater
A Study Of Solders, John D. Prater
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to furnish a qualitative method of comparing the degree of wetting of various solders upon different plate metals when several fluxes are used.
Powder Metallurgy, Cecil R. Waldron
Powder Metallurgy, Cecil R. Waldron
Bachelors Theses and Reports, 1928 - 1970
The metal powders may be produced in a number of different ways. In metals where the intercrystalline material is brittle enough, they may be ground in a ball mill or eddy mill. The fineness of such a powder is more or less controlled by the grain size of the original metal.
Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran
Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran
Bachelors Theses and Reports, 1928 - 1970
The reclamation of metals from scrap is becoming increasingly important in the metallurgical industry. Copper, because it does not corrode readily and is electronegative to most common metals, is peculiarly adapted to reclamation.
A Rapid Determination Of Small Amounts Of Lead In Zinc, George T. Hanson
A Rapid Determination Of Small Amounts Of Lead In Zinc, George T. Hanson
Bachelors Theses and Reports, 1928 - 1970
This investigation, carried on in the metallurgical laboratories at the Montana School of Mines, was undertaken with the desire to work out a rapid method for the estimation, or the determination, of the amount of lead in zinc.
The Electrodeposition Of Manganese From Certain Aqueous Solutions., William C. Wallace
The Electrodeposition Of Manganese From Certain Aqueous Solutions., William C. Wallace
Bachelors Theses and Reports, 1928 - 1970
Manganese has been successfully electrodeposited from aqueous solutions in past years by several workers in electrochemical and electrometallurgical fields.
The present work was concerned, primarily, with investigation of electrodeposition from solutions which are commercially obtainable from the hydrometallurgical or pyrometallurgical treatment of the low grade manganese deposits of this country.
The Electroplating Of Cadmium From Sulfate Solutions, Lewis S. Prater
The Electroplating Of Cadmium From Sulfate Solutions, Lewis S. Prater
Bachelors Theses and Reports, 1928 - 1970
It has been proven that cadmium forms a very satisfactory plate on steel, which has to withstand severe corrosion, especially the corrosion of sea water and spray. The metal is now successfully plated electrolytically from cyanide solutions, but wherever work is carried on with cyanide, there is great danger of poisoning to the workers.
The Presence Of Rhenium In Montana Manganese Ores., Henry E. Swanson
The Presence Of Rhenium In Montana Manganese Ores., Henry E. Swanson
Bachelors Theses and Reports, 1928 - 1970
Rhenium properties offer many interesting possibilities, therefore any ores containing rhenium would be of considerable value. Its close relationship to manganese in the periodic table led to the belief that manganese ores would be an excellent place to search for the metal. Investigation of the literature of rhenium revealed that no ore was known to contain more than 0.001 per cent of rhenium.
The Electrowinning Of Copper From Roasted Sulphides, Thomas B. Linn
The Electrowinning Of Copper From Roasted Sulphides, Thomas B. Linn
Bachelors Theses and Reports, 1928 - 1970
A hydrometallurgical process for the recovery of copper from flotation concentrates has long been considered an attractive possibility. The object of such a method is to produce electrolytic copper without resorting to expensive matte smelting and converting.
Electrolytic Recovery Of Copper And Zinc From Brass, D. H. Swank
Electrolytic Recovery Of Copper And Zinc From Brass, D. H. Swank
Bachelors Theses and Reports, 1928 - 1970
The purpose of this research was to continue the work of Thomas Parker, who worked on the recovery of copper and zinc from brass during the school year l934 - 1935. Since there is such a wide variety of brasses made with usually a third alloying constituent, remelted scrap is suitable only for castings of wide tolerance in specifications.
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.
Electrolytic Recovery Of Copper And Zinc From Brasses, Thomas Barker Jr.
Electrolytic Recovery Of Copper And Zinc From Brasses, Thomas Barker Jr.
Bachelors Theses and Reports, 1928 - 1970
Reclaimed metals, or secondary metals, are becoming of great importance in the metal industries of the world. Secondary metals are an important factor in production. The increase in the secondary production of copper is due to many factors. One of these may be its permenance, that is, the metal does not corrode very readily. Another reason for increase in production is the high price paid for it.
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Microscopic Study Of Montana Silver Ores., Edwin Johnson
Bachelors Theses and Reports, 1928 - 1970
A microscopic investigation of the Montana silver minerals was conducted. This study consisted mainly of identifying the silver and silver-bearing minerals and of determining their paragenetic relationships. The increasing amount of research in which the reflecting microscope is employed is evidence of the great value of this method of approach in the solution of problems of paragenesis of the opaque minerals.
Supergene Enrichment Of Silver Ores With Special Reference To Those From Neihart, Montana., Thomas Walker Page
Supergene Enrichment Of Silver Ores With Special Reference To Those From Neihart, Montana., Thomas Walker Page
Bachelors Theses and Reports, 1928 - 1970
In the development of a technique it was necessary to learn the fundamentals of ore microscopy as applied to the various minerals of silver, which included the use of reflected polarized light, etch reactions, microchemical analysis, and sight recognition of mineral. In addition it was necessary to become familiar with the accepted criteria of sequence, replacement, and other textural phenomena.
The Age-Hardening Of Duralumin, Allison Richard Dyer
The Age-Hardening Of Duralumin, Allison Richard Dyer
Bachelors Theses and Reports, 1928 - 1970
The development of wrought alloys of aluminum to which high strength and ductility can be imparted by heat treatment began with the work of Wilm and Claesser in Germany, 1905-1911. During this time an alloy was developed which was later commercially produced in that country under the tradename of duralumin. The need for strong, light alloys for aircraft during the World War greatly hastened the development of duralumin.
The Effect Of Impurities On The Electrodeposition Of Zinc From Zinc Sulfate Solution Containing Antimony., Emmitt L. Klebba
The Effect Of Impurities On The Electrodeposition Of Zinc From Zinc Sulfate Solution Containing Antimony., Emmitt L. Klebba
Bachelors Theses and Reports, 1928 - 1970
It has been proven by research and years of experience, that before electrolytic zinc is possible, the electrolyte, as zinc sulfate solution must be prepared as pure as is economical. In other words, the ideal electrolyte must only be a solution of one metal - zinc. Every other metal and carbon must be excluded if good recovery and a firm deposit is to be obtained.
The Electrolytic Deposition Of Chromium Upon Aluminum, E. Fults, L. D. Voerge
The Electrolytic Deposition Of Chromium Upon Aluminum, E. Fults, L. D. Voerge
Bachelors Theses and Reports, 1928 - 1970
The purpose or this investigation is primarily to determine the best conditions for plating chromium on aluminum. The work was carried out with the hope of obtaining coherent deposits, and of determining the conditions under which such deposits may be duplicated.
A Preliminary Study Of The Separation Of The Copper Sulfides From Sphalerite And The Effect Of Certain Reagents On Some Of The Pure Copper Minerals In Synthetic Mixtures, Gailen T. Vandel
Bachelors Theses and Reports, 1928 - 1970
The problem of separating the copper sulfide minerals from sphalerite, in copper - zinc ores, has been a difficult one. This is largely due to the lack of adequate research and the small amount of data obtainable on the behavior of copper and zinc sulfide minerals in flotation circuits.