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Articles 14581 - 14610 of 15026
Full-Text Articles in Engineering
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.
An Investigation Of The Anodic Oxidation Of Aluminum In A Sulfuric Acid Electrolyte, William D. Michaely
An Investigation Of The Anodic Oxidation Of Aluminum In A Sulfuric Acid Electrolyte, William D. Michaely
Bachelors Theses and Reports, 1928 - 1970
When aluminum is allowed to stand in air or is heated in air, a thin oxide film is produced on the metal. If aluminum is made the anode in a suitable electrolyte and a current applied, a coating is obtained which is similar to that produced in air, but may be effected much quicker. This film is thicker, harder, more resistant to corrosion and abrasion, and more adhesive than the natural oxide. The film is porous and makes an excellent adsorptive for dyes and pigments.
Oxygen Enriched Atmosphere Roasting, Clarence Wells Jr
Oxygen Enriched Atmosphere Roasting, Clarence Wells Jr
Bachelors Theses and Reports, 1928 - 1970
The possible benefits of oxygen enriched atmosphere roasting have been known to metallurgists for many years, but only since the development of equipment and processes to produce cheap oxygen in very large amounts has much serious consideration been given this matter.
An Investigation Of Age-Hardening In A Commercial Copper-Beryllium Alloy, Terry Horne
An Investigation Of Age-Hardening In A Commercial Copper-Beryllium Alloy, Terry Horne
Bachelors Theses and Reports, 1928 - 1970
This investigation is concerned with the age-hardening process as exemplified by the aging of a commercial Cu-Be alloy and, in particular, with this process as determined by X-ray methods. The amount of information available on age-hardening of commercial alloys is scanty and what information there is, is inaccurate.
The Electrodeposition Of Iron-Manganese Alloys, Kenneth H. Larson
The Electrodeposition Of Iron-Manganese Alloys, Kenneth H. Larson
Bachelors Theses and Reports, 1928 - 1970
Although the alteration of properties resulting from the alloying of metals in their usual commercial forms has been extensively investigated, the field of electrodeposition of alloys is believed generally not to have received the attention that it merits.
A Preliminary Study Of The Benefication Of Montana Kyanite, Donald Paul Mccarthy
A Preliminary Study Of The Benefication Of Montana Kyanite, Donald Paul Mccarthy
Bachelors Theses and Reports, 1928 - 1970
This investigation is a preliminary study of the beneficiation of Montana kyanite, and while preliminary in degree the information gained may serve as a guide for the eventual exploitation of this Montana resource.
Foraminifera From Pleistocene Beds Near San Pedro, California, R. F. Mitchell
Foraminifera From Pleistocene Beds Near San Pedro, California, R. F. Mitchell
Bachelors Theses and Reports, 1928 - 1970
The age of rocks found in drill cores, and consequently the depths to possible oil-bearing formations has in many localities been determined by micro-paleontologic studies during the past three decades. Of the different micro-fossils used in this work, foraminifera have been studied most, are the best described, and hence, by far the most helpful.
Geology Of Upper Bear Gulch And Dry Boulder Creek Area Madison County, Montana, Norman King
Geology Of Upper Bear Gulch And Dry Boulder Creek Area Madison County, Montana, Norman King
Bachelors Theses and Reports, 1928 - 1970
Potential gold mines lie high among the rugged peaks of the Tobacco Root Mountains of southwestern Montana. This is a region where little geologic work has been done, though extensive mine operations have been carried on, and valuable ore has been shipped.
Geology 63: Geological Report Of Senior Field Trip, Thomas L. Wilson
Geology 63: Geological Report Of Senior Field Trip, Thomas L. Wilson
Bachelors Theses and Reports, 1928 - 1970
The field work was conducted in areas adjacent to Whitehall, Montana, as has been the custom for the past several years. Instruction in the proper use of the telescopic and open sight alidades, and the Brunton compass for surveying geologic features was given. Advantages of pacing and speedometer mapping were pointed out and used.
A Geological Report On South Boulder Canyon And The Mayflower Mine-Renova Areas, B. R. Alto
A Geological Report On South Boulder Canyon And The Mayflower Mine-Renova Areas, B. R. Alto
Bachelors Theses and Reports, 1928 - 1970
The purpose of this report is to serve as a written explanation of the accompanying geologic maps and columnar section. Each year the senior students in mining and geological engineering at the Montana School of Mines spend two weeks in the field where they learn the fundamentals of geologic mapping and related field studies. An additional week is spent at the school where maps are assembled, prints made, end other work is done in preparation for the writing of the report.
A Study Of Certain Ferromagnetic Alloys In The Systems Copper-Manganese-Indium And Copper-Manganese-Gallium, Frederick Arthur Hames
A Study Of Certain Ferromagnetic Alloys In The Systems Copper-Manganese-Indium And Copper-Manganese-Gallium, Frederick Arthur Hames
Doctoral Dissertations
"In 1898 F. Heusler discovered that certain alloys containing only copper, manganese, and tin are ferromagnetic. Since that time, ferromagnetic alloys have been reported to occur in the ternary systems copper-manganese-aluminum, copper-manganese-arsenic, copper-manganese-boron, copper-manganese-antimony, copper-manganese-zinc, silver-manganese-aluminum, and silver-manganese-tin. Such ferromagnetic alloys containing only non-ferromagnetic elements have come to be called "Heusler alloys."
From the metallographic standpoint, the ferromagnetic copper-manganese-aluminum and copper-manganese-tin alloys have been the most fully investigated of the Heusler alloys. These alloys owe their ferromagnetism to the beta phases in their respective systems. The structure of the beta phase is based on a body-centered cubic lattice.
In view …
A Study Of The Separation Of Wolframite From Tin-Oxide, Chih-Wen Ying
A Study Of The Separation Of Wolframite From Tin-Oxide, Chih-Wen Ying
Masters Theses
"A number of mines in china, Bolivia, England, and other countries contain both tin-oxide and wolframite. Owing to the fact that the specific gravity of tin-oxide and wolframite is so nearly the same, considerable difficulty is experienced in making a gravity separation, and all attempts to do so by wet or dry concentration have given very poor results. The perfection of magnetic separators has done much to mitigate this difficulty, so that now complex ores of this nature can be treated in a satisfactory manner. The mixed concentrate from the tables or other concentrators, after being roasted to expel sulfur …
A Test Method For Measuring The Flow In Refractory Materials At High Temperatures, Christen Knudsen
A Test Method For Measuring The Flow In Refractory Materials At High Temperatures, Christen Knudsen
Masters Theses
"One of the most important properties of refractory materials is the ability to resist stress which may either be directly applied or originate in the material. The factors which govern the resistance to stress include the modulus of elasticity, the ultimate strength under different types of stress, and the "flow" characteristics which become of importance when the material is stressed at the temperature at which plasticity is developed. Systematic determinations of the mechanical properties such as modulus of elasticity and ultimate or breaking stress is rather difficult or more or less impossible to carry out at the temperature at which …
The Effects Of Moisture In Grog Upon Dry Pressed Mixes Containing Grog, Charles L. Mckinnis
The Effects Of Moisture In Grog Upon Dry Pressed Mixes Containing Grog, Charles L. Mckinnis
Masters Theses
"It has been found that the aging of clay-grog-water mixes before pressing proves to be quite beneficial. The purpose of the aging period is to allow the added water to disseminate throughout the mixture of clay (plastic) and grog (non-plastic) in an effort to bring about the best bonding action possible. The clay-grog-water mixture, if not aged, is of a sticky consistency; while, if the same mixture is aged for twenty-four (24) hours, it is readily workable. This process of aging has long been recognized as a "must" in the Ceramic Industry in obtaining mixtures of ideal workability"--Introduction, page 2.
A Preliminary Investigation Of The Titanium-Tin Equilibrium System, James Eugene Reynolds
A Preliminary Investigation Of The Titanium-Tin Equilibrium System, James Eugene Reynolds
Masters Theses
"Titanium is estimated to comprise about .63% of the lithosphere and atmosphere. This would render it the ninth in abundance of all the elements, and fourth in abundance of the metals suitable for mechanical and structural uses, being exceeded only by iron, aluminum, and magnesium. It is approximately 400 times more abundant than lead, which is generally considered to be quite plentiful. The chief restriction of the commercial availability of titanium in its pure form has been the difficulty of reducing it from its ores. Several methods have been proposed in the past and recent years, and R. S. Dean …
A Study Of The Retort Zinc Distillation Process, Albert Hoffman
A Study Of The Retort Zinc Distillation Process, Albert Hoffman
Masters Theses
"The problem of this thesis is to determine the optimum density of packing of the charge to a zinc retort under exact industrial conditions of temperatures and materials as it affects the production of zinc metal. It is well known that the quantity of zinc produced per cycle is benefited by increasing the density of charging, but increased density of packing or charging is limited by the diffusion, through the charge of the gases necessary to carry on the reduction reactions. In commercial practice there is also a secondary limitation dependent primarily upon the rate at which the heat can …
An Investigation Of The Reduction Of Rutile Copper Oxide Mixtures With Magnesium, Tryggve Smedsland
An Investigation Of The Reduction Of Rutile Copper Oxide Mixtures With Magnesium, Tryggve Smedsland
Masters Theses
"It is known that the addition of titanium to certain types of brasses and bronzes gives them additional valuable properties. The copper-titanium master alloy which is the natural addition agent for making these brasses can not, however, be used if it has been made aluminothermically. It appears that aluminum in the master alloy makes it useless for the above purpose. It should, therefore, be worth while to determine if it is possible to produce a copper-titanium alloy by some method which eliminates the contamination by aluminum, and which would give a copper-titanium which could be used with advantage as an …
Properties Of Wire Suitable For The Fabrication Of Wire Cloth, Campbell William Floyd Funk
Properties Of Wire Suitable For The Fabrication Of Wire Cloth, Campbell William Floyd Funk
Masters Theses
"In the highly competative [sic] wire cloth industry, improvement of product quality is of paramount importance. With an eye to the future, the Ludlow Saylor Wire Company of St. Louis decided to embark upon a research program with the hope of improving the quality of their products above already high standards. An industrial research fellowship was instituted at the Missouri School of Mines and Metallurgy at Rolla for graduate research studies of the metallurgical, mechanical and chemical properties of wire as the [sic] pertain to the weaving of industrial wire cloth. Although relatively small quantities of wire are defective, their …
Studies Of Contact Angles On Oxidized Copper Minerals, John Stewart Carr
Studies Of Contact Angles On Oxidized Copper Minerals, John Stewart Carr
Masters Theses
"Effective flotation of an ore is the result of several factors: selection of suitable reagents; the proper combination of reagents, processing conditions of the operation proper such as time intervals involved and the machinery used. To focus the investigation on a specific field it was decided to investigate in some detail the behaviour of the more popular collectors toward oxidized copper minerals. This investigation was carried out chiefly by applying contact-angle measurements as obtained with the various collectors on the basic carbonate and oxide copper minerals. This basic information was desirable before carrying out actual flotation tests. There was little …
Geology Of The Renova-Bone Basin And Mayflower Mine Areas, R. L. Burns
Geology Of The Renova-Bone Basin And Mayflower Mine Areas, R. L. Burns
Bachelors Theses and Reports, 1928 - 1970
This report has been compiled from the data collected during the September, 1947, geologic field trip of the Montana School of Mines. The trip, under the direction of Dr. E. S. Perry, consisted of two weeks of field mapping and observation near Whitehall, Montana, and one week at the Montana School of Mines preparing this report.
A Geological Report On Several Localities In The Northwestern Tobacco Root Mountains, Rudi Forhan
A Geological Report On Several Localities In The Northwestern Tobacco Root Mountains, Rudi Forhan
Bachelors Theses and Reports, 1928 - 1970
To better acquaint seniors in Geology and mining with actual field practice, the Montana School of Mines offer a course in Geologic Field Mapping, during the three weeks preceding the opening of the fall semester. The first two weeks are spent in actual field mapping of the geologic formations near Whitehall, Montana, while the third week is spent back on the campus compiling data and finishing maps started in the field.
Mayflower, Renova Basin, And South Boulder Creek Areas, Howard Nickelson
Mayflower, Renova Basin, And South Boulder Creek Areas, Howard Nickelson
Bachelors Theses and Reports, 1928 - 1970
In Montana at the turn of the century a great many men sought the riches buried in the earth's crust. Prospectors fanning out from Butte and other early Montana mining areas located veins at the Mayflower, Renova, and Gold Hill areas.
Geology And Mines Of The Upper Blackfoot Valley, Montana, Thomas K. Shea
Geology And Mines Of The Upper Blackfoot Valley, Montana, Thomas K. Shea
Bachelors Theses and Reports, 1928 - 1970
The purchase and continued operation of the Mike Horse mine in the Heddleston district, by the American Smelting and Refining Company, gives the Blackfoot Valley a renewed promise of a prosperous future in its role as a mining district. In the past, large amounts of placer gold were recovered from the gulches of the area, however, because of the transportation facilities, only the upper portions of a few lodes were exploited by the early miners.
Rugose Corals Of The Madison Group, William R. Paine
Rugose Corals Of The Madison Group, William R. Paine
Bachelors Theses and Reports, 1928 - 1970
One of the best types of index fossils, and one which occurs most plentifully in the Madison group of formations in Montana, and yet, one which has been little studied, is the group of rugose, or cup, corals. Perhaps this group of fossils has not been studied in detail because their distinguishing characteristics are mainly internal, and laboratory preparation in the form of thin section or polished surfaces is necessary to bring out these characteristics.
Kibbey Sandstone In Montana, Glen Shean
Kibbey Sandstone In Montana, Glen Shean
Bachelors Theses and Reports, 1928 - 1970
Much attention has recently been given, by geologists, to prolific water bearing horizon and a potential oil horizon, known as the Kibbey sandstone, which lies deeply buried under much of central Montana. In some localities the sandstone is dry, and its identification in cuttings from deep wells has in many cases proved difficult.
The Geology And Ore Deposits Of The Ruby Gulch Mine, Henry J. Roletto, John X. Combo
The Geology And Ore Deposits Of The Ruby Gulch Mine, Henry J. Roletto, John X. Combo
Bachelors Theses and Reports, 1928 - 1970
The Ruby Gulch Mine, owned and operated by the Ruby Gulch Mining Company, Zortman, Montana, is one of the most important low-grade gold producers in the state. Situated in the Little Rocky Mountains, the mine has had an interesting history since its discovery shortly before the turn of the century.
An Investigation Of A Particular Weldment Failure, Byron Clow
An Investigation Of A Particular Weldment Failure, Byron Clow
Bachelors Theses and Reports, 1928 - 1970
Two sets of weld-test coupons, supposedly made under identical conditions, were submitted to this institution last year for approval and certification under the A.S.M.E. Welder's Qualification Code. The first set of coupons was unsatisfactory. The second set, made by the same operators one month later, was satisfactory.
Corrosion Testing Of Iron-Tin Alloys By The Salt Spray Method, Bernard T. Mcdonald
Corrosion Testing Of Iron-Tin Alloys By The Salt Spray Method, Bernard T. Mcdonald
Bachelors Theses and Reports, 1928 - 1970
The purpose of this study was to determine the relative rate of corrosion of iron-tin alloys containing low percentages of tin. Since in the world today, a great deal of work is being done to develop large tin deposits and new methods devised to treat these ores, it is possible that the metal will become abundant and will obtain a more important position in the metal industry.
The Corrosion Resistance Of Iron-Tin Compacts As Produced By Powder Metallurgy, Robert W. Gambill
The Corrosion Resistance Of Iron-Tin Compacts As Produced By Powder Metallurgy, Robert W. Gambill
Bachelors Theses and Reports, 1928 - 1970
The art of Powder Metallurgy deals with the preparation of metal powders and their utilization. As a more pertinent definition, the following has been suggested: "Powder Metallurgy is the art of producing metal powders and shaped objects from individual, mixed, or alloyed metal powders, with or without the inclusion of non-metallic constituents".
Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken
Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken
Bachelors Theses and Reports, 1928 - 1970
The great diversity on mineral wealth in Idaho establishes it as one of the principle mining states in the union. Mining first began in the state with the discovery of placer gold in the Pierce City district in 1861, and since that date has become one of the leading industries of the state.