Acoustic-mechanical and microscopic investigation of corundum material
This paper presents the results of acoustic emission (AE) measurements of samples under compressive stress. Additional research, concerning structure and parameters of the material, were performed using microscopic and ultrasonic methods. The object of investigation were samples of corundum material...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2014-04-01
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| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/696 |
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| author | Przemysław RANACHOWSKI Feliks REJMUND Andrzej PAWEŁEK Andrzej PIĄTKOWSKI |
| author_facet | Przemysław RANACHOWSKI Feliks REJMUND Andrzej PAWEŁEK Andrzej PIĄTKOWSKI |
| author_sort | Przemysław RANACHOWSKI |
| collection | DOAJ |
| description | This paper presents the results of acoustic emission (AE) measurements of samples under compressive stress. Additional research, concerning structure and parameters of the material, were performed using microscopic and ultrasonic methods. The object of investigation were samples of corundum material C 799 type. The content of alumina in investigated material was equal to 99.7%. The corundum materials demonstrate high mechanical, thermomechanical as well as grindability resistance and find wide application in production of modern technical devices. The aim of study was recognition of stages of degradation processes of the corundum structure. The analysis of AE results pointed out diversified strength and mechanical-acoustic characteristics of particular samples. It was stated during microscopic investigation that the main reason for this effect is due to different grains size and their spatial distribution. The authors consider the abnormal grain growth (AGG) phenomenon as a reason of inhomogeneities of the corundum structures in particular samples. This effect occurs at longer sintering term, especially for fast temperature growth. AGG phenomenon has random character and up to now is not explained in satisfying way. |
| format | Article |
| id | doaj-art-8ba905c2bb5644c482ba3d2237882026 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2014-04-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-8ba905c2bb5644c482ba3d22378820262025-08-20T03:50:48ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2014-04-01324Acoustic-mechanical and microscopic investigation of corundum materialPrzemysław RANACHOWSKI0Feliks REJMUND1Andrzej PAWEŁEK2Andrzej PIĄTKOWSKI3Institute of Fundamental Technological Research Department of Physical Acoustics Polish Academy of SciencesInstitute of Fundamental Technological Research Department of Physical Acoustics Polish Academy of SciencesAleksander Krupkowski Institute of Metallurgy and Materials Science Polish Academy of SciencesAleksander Krupkowski Institute of Metallurgy and Materials Science Polish Academy of SciencesThis paper presents the results of acoustic emission (AE) measurements of samples under compressive stress. Additional research, concerning structure and parameters of the material, were performed using microscopic and ultrasonic methods. The object of investigation were samples of corundum material C 799 type. The content of alumina in investigated material was equal to 99.7%. The corundum materials demonstrate high mechanical, thermomechanical as well as grindability resistance and find wide application in production of modern technical devices. The aim of study was recognition of stages of degradation processes of the corundum structure. The analysis of AE results pointed out diversified strength and mechanical-acoustic characteristics of particular samples. It was stated during microscopic investigation that the main reason for this effect is due to different grains size and their spatial distribution. The authors consider the abnormal grain growth (AGG) phenomenon as a reason of inhomogeneities of the corundum structures in particular samples. This effect occurs at longer sintering term, especially for fast temperature growth. AGG phenomenon has random character and up to now is not explained in satisfying way.https://acoustics.ippt.pan.pl/index.php/aa/article/view/696corundum material C 799acoustic emissionabnormal grain growth |
| spellingShingle | Przemysław RANACHOWSKI Feliks REJMUND Andrzej PAWEŁEK Andrzej PIĄTKOWSKI Acoustic-mechanical and microscopic investigation of corundum material Archives of Acoustics corundum material C 799 acoustic emission abnormal grain growth |
| title | Acoustic-mechanical and microscopic investigation of corundum material |
| title_full | Acoustic-mechanical and microscopic investigation of corundum material |
| title_fullStr | Acoustic-mechanical and microscopic investigation of corundum material |
| title_full_unstemmed | Acoustic-mechanical and microscopic investigation of corundum material |
| title_short | Acoustic-mechanical and microscopic investigation of corundum material |
| title_sort | acoustic mechanical and microscopic investigation of corundum material |
| topic | corundum material C 799 acoustic emission abnormal grain growth |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/696 |
| work_keys_str_mv | AT przemysławranachowski acousticmechanicalandmicroscopicinvestigationofcorundummaterial AT feliksrejmund acousticmechanicalandmicroscopicinvestigationofcorundummaterial AT andrzejpawełek acousticmechanicalandmicroscopicinvestigationofcorundummaterial AT andrzejpiatkowski acousticmechanicalandmicroscopicinvestigationofcorundummaterial |