{"446231":{"#nid":"446231","#data":{"type":"event","title":"PhD Defense by William Daloz","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EMSE PhD Defense - William Daloz\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EWednesday, September 16, 3 p.m.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EMRDC 3515 (Hightower Conference Room)\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThesis Committee:\u003C\/p\u003E\u003Cp\u003EProf. Joe Cochran (advisor), MSE\u003C\/p\u003E\u003Cp\u003EProf. David McDowell, ME\/MSE\u003C\/p\u003E\u003Cp\u003EProf. Rick Neu, ME\u003C\/p\u003E\u003Cp\u003EProf. Thomas Sanders, MSE\u003C\/p\u003E\u003Cp\u003EProf. Naresh Thadhani, MSE\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETitle: Developing a High Temperature Oxidation Resistant Mo-Si02 Composite Alloy\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E \u003C\/p\u003E\u003Cp\u003EA new powder processing approach to produce oxidation resistant molybdenum alloys for high temperature use has been developed. Oxidation protection is provided by fine dispersion of silica\u0026nbsp;glass\u0026nbsp;particles within a molybdenum matrix. As the molybdenum oxidizes, the\u0026nbsp;glass\u0026nbsp;is exposed and melts to form a self-healing protective oxide coating. Additionally, homogeneously dispersed Mo5SiB2 and\/or Mo2B provide boria upon oxidation which reduces\u0026nbsp;glass\u0026nbsp;viscosity and allows flowing glass to coat the surface while remaining solid internally. This is similar to the oxidation protection used in Mo-3Si-1B (wt%) systems; however\u0026nbsp;embedding\u0026nbsp;the\u0026nbsp;glass\u0026nbsp;directly\u0026nbsp;into\u0026nbsp;the Mo matrix and eliminating the Mo3Si (A15) phase provides the same volume of\u0026nbsp;glass\u0026nbsp;at lower volume fractions of brittle phases and also without embrittling Si impurities in solution in Mo. Additionally the\u0026nbsp;glass\u0026nbsp;composition can be tailored for different applications and different temperatures beyond that achievable in Mo-Si-B based systems. A variety of microstructures, compositions and additional components for improved oxidation protection are also explored, and mechanisms of the oxidation protection are discussed.\u003C\/p\u003E\u003Cp\u003E \u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Developing a High Temperature Oxidation Resistant Mo-Si02 Composite Alloy"}],"uid":"27707","created_gmt":"2015-09-10 08:52:21","changed_gmt":"2016-10-08 02:13:43","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2015-09-16T16:00:00-04:00","event_time_end":"2015-09-16T18:00:00-04:00","event_time_end_last":"2015-09-16T18:00:00-04:00","gmt_time_start":"2015-09-16 20:00:00","gmt_time_end":"2015-09-16 22:00:00","gmt_time_end_last":"2015-09-16 22:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}