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The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen
The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen
Bachelors Theses and Reports, 1928 - 1970
During recent years, duralumin and all aluminum alloys have been made the object of much discussion regarding their hardening mechanism. The commercial success of nearly all of the alloys of aluminum and magnesium is dependent on their ability to age or precipitation harden.
Occurrence Of Native Copper Near Jefferson City, Montana, Terence G. Kirkland
Occurrence Of Native Copper Near Jefferson City, Montana, Terence G. Kirkland
Bachelors Theses and Reports, 1928 - 1970
Sometime prior to 1870, a group of prospectors made what was believed to be a "rich strike' on one of the tributaries of Prickly Pear Creek in Jefferson County, Montana. Instead of striking it rich, they had uncovered a native copper deposit, worthless to them because of its limited extent and remote location, but now of much interest to the geologist, and to the mining engineer because of its possible commercial value.
The Anodic Polishing Of Copper In Solutions Of Orthophosphoric Acid, Robert E. Sullivan
The Anodic Polishing Of Copper In Solutions Of Orthophosphoric Acid, Robert E. Sullivan
Bachelors Theses and Reports, 1928 - 1970
The electrolytic cleaning of metals by anodic methods has been known for many years. It was recognized long ago that when the temperature and concentration of the electrolyte were properly regulated, bright clean surfaces were obtained.
An Investigation Into The Adaption Of The Induction Furnace For Determining The Equilibrim Diagram Of The System Cu2s-Fes, John R. Cole
An Investigation Into The Adaption Of The Induction Furnace For Determining The Equilibrim Diagram Of The System Cu2s-Fes, John R. Cole
Bachelors Theses and Reports, 1928 - 1970
This investigation was started in an effort to find an accurate and efficient method of determining the freezing points of ferrous and cuprous sulphides, mixtures of the two substances, and from this to establish the liquidus line of the equilibrium diagram.
The Electrodeposition Of Copper-Cobalt Alloys, Richard L. Dunn
The Electrodeposition Of Copper-Cobalt Alloys, Richard L. Dunn
Bachelors Theses and Reports, 1928 - 1970
An attempt was made to deposit a 50:50 copper-cobalt alloy from various sulfate electrolytes. No true 50:50 alloy was obtained but various mixtures of cobalt and copper rich crystals were deposited.
Age Hardening Of Copper Antimony Alloys, William R. Stern
Age Hardening Of Copper Antimony Alloys, William R. Stern
Bachelors Theses and Reports, 1928 - 1970
A large number of alloys of varying percentages of copper and antimony were prepared. These alloys were treated in various ways which might be expected to produce age hardening. The effect of cold working was studied in the range where the alloys were malleable.
Hardness And Electrical Resistivity Of Copper-Iron Powder Metal Compacts, Fred A. Foyle Jr.
Hardness And Electrical Resistivity Of Copper-Iron Powder Metal Compacts, Fred A. Foyle Jr.
Bachelors Theses and Reports, 1928 - 1970
Although powder metallurgical methods have been used for years to fabricate tungsten and platinum, very little scientific data have been recorded until the beginning of this century. A large percentage of all commercial production at present is based upon past practice rather than upon scientific knowledge.
The Electrodeposition Of Iron-Manganese Alloys, Raymond D. Magorien
The Electrodeposition Of Iron-Manganese Alloys, Raymond D. Magorien
Bachelors Theses and Reports, 1928 - 1970
An electrodeposition of an iron-manganese alloy was made from the same conditions determined by previous research. Various addition agents were experimented with in an attempt to produce better conditions for electro-deposition. It was found advantageous to add small amounts of sodium lauryl sulfate and ammonium sulfite to the electrolyte.
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Bachelors Theses and Reports, 1928 - 1970
The ore investigated in this thesis is a zinc-copper-lead ore. Microscopic analysis of this complex sulphide ore showed it to contain pyrite, sphalerite, arsenopyrite, galena, chalcopyrite, tetrahedrite, and covellite, with quartz as the gangue constituent.
Bright Electroplating Of Copper In The Acid Bath, Elwood K. Jensen
Bright Electroplating Of Copper In The Acid Bath, Elwood K. Jensen
Bachelors Theses and Reports, 1928 - 1970
Plating of various objects with mirror-like surfaces of chromium, nickel, and other metals has expanded considerably during the past decade, and now ranks as an important enterprise, particularly with respect to the automotive industry.
Electrolytic Deposition Of Iron, Irving M. Kenoffel
Electrolytic Deposition Of Iron, Irving M. Kenoffel
Bachelors Theses and Reports, 1928 - 1970
In this thesis the purpose was to obtain a good iron deposit from a relatively simple bath. The deposit was to be of good nature and low in Carbon content. Also included is a summary of the uses to which electrolytic iron can be put as well as a summary of work done by other researchers in depositing iron electrolytically.
Concentration By Flotation Of A Complex Galena - Sphalerite - Chalcopyrite Ore From The Nine Mile District Near Missoula, Montana, Truxton J. Fisher, John L. Tokich
Concentration By Flotation Of A Complex Galena - Sphalerite - Chalcopyrite Ore From The Nine Mile District Near Missoula, Montana, Truxton J. Fisher, John L. Tokich
Bachelors Theses and Reports, 1928 - 1970
At the present time ore bodies being mined are becoming more and more complex in mineral association, thus presenting a more difficult problem in their concentration. Lead-zinc sulphide ores are among the more common ores which present such difficulties.
The Electrodeposition Of Iron-Manganese Alloys, Earl C. Roberts
The Electrodeposition Of Iron-Manganese Alloys, Earl C. Roberts
Bachelors Theses and Reports, 1928 - 1970
Various electrolytes were experimented with in an attempt to deposit an iron-manganese alloy. An Alloy was obtained from a solution containing ferrous ammonium sulfate, manganous sulfate, and ammonium sulfate. Further experimentation was done in an effort to determine the optimum conditions of deposition and the highest manganese alloy which could be produced.
Refining Of Low Grade Zinc-Gold Precipitates, John C. Stentz
Refining Of Low Grade Zinc-Gold Precipitates, John C. Stentz
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to ascertain if advantage could be taken of the copper in the precipitates as a collecting agent of the precious metals in the direct smelting furnace.The products produced to be low grade anode bullion and a slag low in precious metals, high in zinc and lead.
The Velocity Of Falling Particles In A Liquid Medium, Elliott Coldwater
The Velocity Of Falling Particles In A Liquid Medium, Elliott Coldwater
Bachelors Theses and Reports, 1928 - 1970
The investigation was prompted by the fact that there seemed to be some discrepancy between the results published by Richards,and the empirical figures used in classification and in gravity concentration. Further, the work of Richards was restricted to quartz and galena whereas this study also includes pyrite and calcite.
Age Hardening Of Copper-Aluminum Alloy Castings, Frank Randall
Age Hardening Of Copper-Aluminum Alloy Castings, Frank Randall
Bachelors Theses and Reports, 1928 - 1970
Age hardening occurs in alloys of the solid solution type containing a hardening constituent, be it metal or metallic compound, which is more soluble in the solvent phase at higher temperatures than at lower ones.
An Experimental Investigation Of The Age Hardening Of Nickel With Boron, Willard M. Boam
An Experimental Investigation Of The Age Hardening Of Nickel With Boron, Willard M. Boam
Bachelors Theses and Reports, 1928 - 1970
Since 1911, at which time, the age hardening phenomenon of duralumin was discovered by Film, much research has been carried on investigating the various alloy systems. The successful application of age hardening to the copper aluminum system (duralumin) has indicated the possibility of hardening practically all the metals in the same way.
The Recovery Of Zinc From Butte Mine Waters, Edmond M. Fern
The Recovery Of Zinc From Butte Mine Waters, Edmond M. Fern
Bachelors Theses and Reports, 1928 - 1970
Very little work has been done towards the recovery of zinc from mine water because the zinc content of the water is generally low. As different from copper, which can very easily be replaced by iron in any of its solutions, zinc is very high up in the electro-chemical series and so the few metals above zinc, most of which are rare and hence expensive, cannot be used to replace zinc from its solution.
Electrical Resistivity Measurements Of Powder Metal Compacts, John M. Fitzpatrick
Electrical Resistivity Measurements Of Powder Metal Compacts, John M. Fitzpatrick
Bachelors Theses and Reports, 1928 - 1970
This work, as it was originally planned, was the arranging of an apparatus whereby electrical resistivity measurements could be made on powder compacts. It was also to include measurements on a series of copper-nickel compacts both before and after sintering.
An Investigation Of The Age-Hardening Of Copper With Nickel-Boron Compounds, Robert I. Moreen
An Investigation Of The Age-Hardening Of Copper With Nickel-Boron Compounds, Robert I. Moreen
Bachelors Theses and Reports, 1928 - 1970
Boron is an element whose metallurgical possibilities have never been fully investigated. The principal reason for this fact seems to lie in the difficulties encountered in preparing elemental boron and its various intermetallic compounds.
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 Electrowinning Of Manganese From Rhodochrosite, Lloyd L. Thompson
The Electrowinning Of Manganese From Rhodochrosite, Lloyd L. Thompson
Bachelors Theses and Reports, 1928 - 1970
Manganese is commonly known to be a metal of great strategic importance. It is essential in the production of all steels, first as a scavenger to remove oxygen and sulfur, and second as an alloying element in wear-resistant steels.
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.
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.
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.
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.
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.
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.