dc.contributor.advisor | Zerda, T. Waldek | |
dc.contributor.advisor | Zhao, Y. | |
dc.contributor.author | Qian, Jiang | en_US |
dc.date.accessioned | 2019-10-11T15:11:12Z | |
dc.date.available | 2019-10-11T15:11:12Z | |
dc.date.created | 2003 | en_US |
dc.date.issued | 2003 | en_US |
dc.identifier | aleph-995984 | en_US |
dc.identifier | Microfilm Diss. 827. | en_US |
dc.identifier.uri | https://repository.tcu.edu/handle/116099117/34138 | |
dc.description.abstract | In this dissertation work, novel bulk diamond composites with nano-size grain and nanocrystalline SiC bonding were sintered under high pressure-high temperature (HP-HT) conditions. While preserving the superior hardness, wear resistance of micron-composites, nano-composites have higher strength and fracture toughness due to effective blocking of microcrack propagation and dislocation movement by the nanocrystalline grains. New preparation method, wet mixing and high-energy ball milling, have been used to make starting materials to avoid the self-stop process due to pore closure in HP-HT liquid phase sintering. Key factors influencing the dynamics of the reaction between diamond and silicon, such as diamond graphitization process, phase composition and stress-strain, were thoroughly studied with Raman spectroscopy, x-ray diffraction, SEM and TEM techniques. Mechanical properties of the composites were characterized by ultrasonic interferometer and microindentation hardness measurements. Nanostructured composites represent a new field of fundamental science and manifest potential application in multiple industries. | |
dc.format.extent | x, 114 leaves : illustrations | en_US |
dc.format.medium | Format: Print | en_US |
dc.language.iso | eng | en_US |
dc.relation.ispartof | Texas Christian University dissertation | en_US |
dc.relation.ispartof | AS38.Q52 | en_US |
dc.subject.lcsh | Diamonds, Industrial | en_US |
dc.subject.lcsh | Silicon carbide | en_US |
dc.subject.lcsh | Composite materials | en_US |
dc.subject.lcsh | Sintering | en_US |
dc.title | Diamond/silicon carbide composites sintered under high pressure-high temperature conditions / by Jiang Qian. | en_US |
dc.type | Text | en_US |
etd.degree.department | Department of Physics and Astronomy | |
etd.degree.level | Doctoral | |
local.college | College of Science and Engineering | |
local.department | Physics and Astronomy | |
local.academicunit | Department of Physics and Astronomy | |
dc.type.genre | Dissertation | |
local.subjectarea | Physics and Astronomy | |
dc.identifier.callnumber | Main Stacks: AS38 .Q52 (Regular Loan) | |
dc.identifier.callnumber | Special Collections: AS38 .Q52 (Non-Circulating) | |
etd.degree.name | Doctor of Philosophy | |
etd.degree.grantor | Texas Christian University | |