NDE Reliability and Process Control for Structural CeramicsSource: Journal of Engineering for Gas Turbines and Power:;1987:;volume( 109 ):;issue: 003::page 263Author:G. Y. Baaklini
DOI: 10.1115/1.3240034Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The reliability of microfocus x-radiography and scanning laser acoustic microscopy for detecting microvoids in silicon nitride and silicon carbide was statistically evaluated. Materials and process-related parameters that influenced the statistical findings in research samples are discussed. The use of conventional x-radiography in controlling and optimizing the processing and sintering of an Si3 N4 -SiO2 -Y2 O3 composition designated NASA 6Y is described. Radiographic evaluation and guidance helped develop uniform high-density Si3 N4 modulus-of-rupture bars with improved four-point flexural strength (857, 544, and 462 MPa at room temperature, 1200°C, and 1370°C, respectively) and reduced strength scatter.
keyword(s): Reliability , Nondestructive evaluation , Ceramics , Process control , Acoustics , Sintering , Density , Temperature , Lasers , Silicon nitride ceramics , Electromagnetic scattering , Microscopy , Bending strength , Rupture AND Silicon ,
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| contributor author | G. Y. Baaklini | |
| date accessioned | 2017-05-08T23:24:44Z | |
| date available | 2017-05-08T23:24:44Z | |
| date copyright | July, 1987 | |
| date issued | 1987 | |
| identifier issn | 1528-8919 | |
| identifier other | JETPEZ-26647#263_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/102429 | |
| description abstract | The reliability of microfocus x-radiography and scanning laser acoustic microscopy for detecting microvoids in silicon nitride and silicon carbide was statistically evaluated. Materials and process-related parameters that influenced the statistical findings in research samples are discussed. The use of conventional x-radiography in controlling and optimizing the processing and sintering of an Si3 N4 -SiO2 -Y2 O3 composition designated NASA 6Y is described. Radiographic evaluation and guidance helped develop uniform high-density Si3 N4 modulus-of-rupture bars with improved four-point flexural strength (857, 544, and 462 MPa at room temperature, 1200°C, and 1370°C, respectively) and reduced strength scatter. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | NDE Reliability and Process Control for Structural Ceramics | |
| type | Journal Paper | |
| journal volume | 109 | |
| journal issue | 3 | |
| journal title | Journal of Engineering for Gas Turbines and Power | |
| identifier doi | 10.1115/1.3240034 | |
| journal fristpage | 263 | |
| journal lastpage | 266 | |
| identifier eissn | 0742-4795 | |
| keywords | Reliability | |
| keywords | Nondestructive evaluation | |
| keywords | Ceramics | |
| keywords | Process control | |
| keywords | Acoustics | |
| keywords | Sintering | |
| keywords | Density | |
| keywords | Temperature | |
| keywords | Lasers | |
| keywords | Silicon nitride ceramics | |
| keywords | Electromagnetic scattering | |
| keywords | Microscopy | |
| keywords | Bending strength | |
| keywords | Rupture AND Silicon | |
| tree | Journal of Engineering for Gas Turbines and Power:;1987:;volume( 109 ):;issue: 003 | |
| contenttype | Fulltext |