Engineering Commons^™

A Study Of The Dissolution Of Hafnium In Hydrofluoric Acid, James W. Johnson

Doctoral Dissertations

"The purpose of this investigation was to obtain kinetic and electrochemical information concerning the reaction of hafnium with hydrofluoric acid in order to establish the mechanism of dissolution. This included the determination of dissolution rates, the difference effect, and dissolution potentials of hafnium in hydrofluoric acid"--Abstract, page 1.

A Heterocyclic Alkyd Resin, Bhailalbhai M. Patel

Masters Theses

" 'Alkyd’ is a word coined by Kienle in 1927 to designate a class of synthetic resins which include the complexes resulting from the reaction of polyhydric alcohols and resinifying carboxylic organic aromatic acids or their anhydrides. The word in a broad sense is generally considered to apply to many modifications of these resins - drying, semi-drying and non-drying oil-modified alkyds. It was derived from the words alcohol and acid by combining “al” and “cid” and for euphony changing the ”cid” to “kyd” – al(cid)kyd.

Compounds having rings composed solely of carbon atoms are called homocyclic compounds or carbocyclic compounds. …

A Study Of Invert Emulsion Drilling Fluids, Edward R. Tegland

Masters Theses

"Since invert emulsions are being applied as drilling fluids to cope with special drilling and completion problems, evaluations of existing and new types of emulsions are needed. Three types of emulsions are evaluated in this study: (1) type A emulsions prepared with a commercial emulsifier, (2) type B emulsions prepared by adding clay to the external phase, and (3) type C emulsions containing no externally added emulsifier.

Standard testing procedures were used to measure the viscosity and filtration properties of the emulsions studied. Interfacial tension measurements were made using a technique described in the literature. The degree of stability for …

Design, Construction And Operation Of Equipment For The Study Of Evaporation Of Aqueous Solutions Using A Simplified Reactor Design Approach, Virendra Kumar Mathur

Masters Theses

"The study of simultaneous heat and mass transfer in flow reactors has attracted the attention of many workers for a long time due to its wide application in the industrial field. These heat and mass transfer studies play an important role in determining the rate equations and in turn the size of the reactor itself. A large number of chemical reactions have been studied by various workers….

The purpose of this work comprised only the initial or exploratory phase of this overall project, and deals with the design, construction and assembling of the equipment necessary to carry out the vaporization …

Evaluation Of Protective Paint Films On Steel By X-Ray Diffraction Techniques, Donald Charles Knobeloch

Masters Theses

"Paints and related organic materials provide the most widely used means of protecting metals against corrosion. While corrosion measurements are based on a full range of quantitative methods in physical and analytical chemistry, the basic problem of evaluation work in the field of paint chemistry has been characterized by empirical testing procedures. Field tests are still of major importance and secondly, the relative value of paints may be predicted through exacting laboratory tests. However, the results of accelerated exposure tests have never successfully been correlated with service experience despite the efforts of many laboratories over a period of 35 years …