Sintering Silicon Nitride to Form Near Net Shape Cutting    Tools
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Jorn Larsen-Basse', 'PO_EMAI': None, 'PO_PHON': None}
This project deals with the development of a sintered silicon nitride           ceramic system having a transverse rupture strength of at least 70,000          psi at 1000oC, densified to 99% of the theoretical density, and formed          to near net shape as an indexable cutting tool.  The eventual goal is to        accomplish sintering to full density with the desired microstructure at         one atmosphere of nitrogen pressure.  Certain sintering limits restrict         the compositional choices.  However, optimal properties may be obtained         by compositions that can be densified within the microstructure-                sintering limits.  It is also possible that  certain compositions               require a two-stage sintering process to achieve 99% theoretical                density.                                                                                                                                                        Potential benefits from this research would be a fundamental                    understanding of the sintering mechanism of the silicon nitride ceramic         system, and the increased productivity and cost-savings from the use of         sintered silicon nitride cutting tools in machining gray cast iron.
{'FirstName': 'Shyam', 'LastName': 'Samanta', 'PI_MID_INIT': 'K', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Shyam K Samanta', 'EmailAddress': None, 'NSF_ID': '000205007', 'StartDate': '08/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Regents of the University of Michigan - Ann Arbor', 'CityName': 'ANN ARBOR', 'ZipCode': '481091079', 'PhoneNumber': '7347636438', 'StreetAddress': '1109 GEDDES AVE, SUITE 3300', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Michigan', 'StateCode': 'MI', 'CONGRESSDISTRICT': '06', 'CONGRESS_DISTRICT_ORG': 'MI06', 'ORG_UEI_NUM': 'GNJ7BBP73WE9', 'ORG_LGL_BUS_NAME': 'REGENTS OF THE UNIVERSITY OF MICHIGAN', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1446', 'Text': 'MATERIALS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8708756.xml'}