We are inviting IDEALS users, both people looking for materials in IDEALS and those who want to deposit their work, to give us feedback on improving this service through an interview. Participants will receive a $20 VISA gift card. Please sign up via webform. # Browse Dissertations and Theses - Materials Science and Engineering by Issue Date • (1965-02) Sources of vacancies play an important role in phenomena such as sintering, the Kirkendall effect, high temperature creep, polygonization and many other diffusion controlled processes. In spite of their importance very ... application/pdf PDF (39MB) • (1989) The deformation mechanisms of four rapidly solidified (RS) and hot extruded aluminum alloys were investigated. Al-8.8Fe-3.7Ce (all compositions in wt%) and Al-8.9Fe-6.9Ce alloys produced from RS powders and two Al-8Fe-2Mo ... application/pdf PDF (5MB) • (1989) New implant materials are necessary in medicine for use in bone fracture repair devices, skeletal replacements, dental restoratives, or bony augmentation surgeries. The materials used in each of these applications require ... application/pdf PDF (18MB) • (1989) The process of corrosion fatigue involves mechanical and environmental influences that affect crack initiation, crack growth, and ultimately fatigue life. It is generally recognized that corrosion damage in the form of ... application/pdf PDF (5MB) • (1989) Grain growth in BaTiO$\sb3$can be significantly inhibited by insoluble or slightly soluble second phase additions such as ZrO$\sb2$, or by fluxes in the CaO$\cdot$Al$\sb2$O$\sb3\cdot$B$\sb2$O$\sb3$system. SEM and TEM ... application/pdf PDF (7MB) • (1989) Radio Frequency (rf) cylindrical magnetron glow discharges of Ar, He, and CF$\sb4$driven at 1.8MHz and 13.56MHz have been characterized using electrostatic probes, optical emission spectroscopy and optical actinometry. ... application/pdf PDF (7MB) • (1989) Incorporation of hydrogen transforms pure amorphous silicon into a high quality electronic material through the passivation of unterminated silicon bonds in the amorphous silicon network. To date, most high quality ... application/pdf PDF (6MB) • (1989) This thesis reports on preparation of PbTiO$\sb3$by two chemical methods: (i) aqueous co-precipitation and (ii) organo-metallic sol-gel processing. The effects of chemical processing conditions on material properties were ... application/pdf PDF (11MB) • (1989) The molecular attributes which govern the formation and structure of ordered phases in polymeric materials are poorly understood. This work studies the relationship between configurational order among dipolar functional ... application/pdf PDF (8MB) • (1989) A study has been conducted to investigate and compare the growth, strain, defects, electrical and optical properties of GaAs layers grown simultaneously on silicon-on-sapphire (SOS) and Si substrates using a two-step ... application/pdf PDF (3MB) • (1989) A number of oxide thin films produced by rf sputtering have been found to show high resolution lithographic characteristics when exposed under high dose rate conditions in a scanning transmission electron microscope. Holes ... application/pdf PDF (6MB) • (1989) Three types of stainless steel--austenitic, ferritic and duplex--were cathodically precharged with hydrogen at high temperature in a molten salt electrolyte. Constant strain rate tests and sustained load tests were performed ... application/pdf PDF (6MB) • (1989) In order to understand the stress corrosion cracking behavior of metastable and stable austenitic stainless steels, constant elongation rate tests (CERT) and sub-critical crack growth (SCG) tests were used to measure the ... application/pdf PDF (6MB) • (1989) The factors controlling the monoclinic ($\beta$) to orthorhombic ($\gamma$) transformation of dicalcium silicate (Ca$\sb2$SiO$\sb4$) at about 490$\sp\circ$C have been studied. This transformation is of interest in portland ... application/pdf PDF (9MB) • (1989) The thermal stability of a dispersion of rare-earth oxide particles in Ti and Ti$\sb3$Al matrices has been considered analytically and determined experimentally. The solubility product for the formation of erbia ... application/pdf PDF (7MB) • (1990) Creep and creep rupture studies have been carried out at 900$\sp\circ\$C in lab air and in vacuum on Alloy 800H. Three different notch acuities were chosen so that the effect of stress intensity on the rupture lifetimes ...

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• (1990)
Photoluminescence (PL) studies of defect-related processes in high-purity GaAs and related III-V compounds, are reported. A new effect of light-induced reactivation (LIR) or acceptors in p-type hydrogenated GaAs has been ...

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• (1990)
Rapid solidification (RS) studies have been performed on various Ti-Cu (2-10 wt.%) alloys with and without 2.5 wt.% Er additions. Rapid solidification was effected by laser surface melting and/or centrifugal atomization. ...

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• (1990)
Single-pitted specimens of HF-80, a HSLA steel, were tested in laboratory air and in 1 M NaCl solution to study the influence of a corrosive environment on its fatigue life.

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• (1990)
As a typical spin-glass alloy system with diverse controversies on its magnetic properties and atomic arrangements, Au-rich Au-Fe alloys with Fe content from 10.7 to 33at% were studied to clarify their microstructural ...

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