Loading...
Please wait, while we are loading the content...
Similar Documents
THE PHASE STABILITY OF SINTERED COMPOSITES IN Al 2 O 3-ZrO 2-Y 3 Al 5 O 12 SYSTEM
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lach, Radosław Dudek, Agnieszka Godek, Olga Duszová, Annamária Ziąbka, Magdalena Pędzich, Zbigniew |
| Copyright Year | 2014 |
| Abstract | In recent years the technology of manufacturing dense composite sinters with submicrometric grains in the alumina/yttria-alumina garnet (Al2O3-Y3Al5O12) system has developed. The garnet grains are very uniformly distributed in the alumina matrix due to applying special chemical methods. Such a material shows a higher hardness, comparable fracture toughness and almost a one order of magnitude lower wear susceptibility when compared to alumina sinters. The drawback of this material is its relatively low strength. This work presents the results of experiments on improving the mechanical properties of the Al2O3-Y3Al5O12 (YAG)m composite by introducing grains of another phase (tetragonal zirconia) into the alumina matrix. The sintering of such a composition demanded temperature conditions which did not exclude the possibility of yttria atom diffusion between the garnet and zirconia grains. This phenomenon strongly influenced the phase composition of the final sinters. The paper discusses the microstructure of the sinters. The influence of the starting composition and sintering conditions on the final phase composition and selected mechanical properties of sinters were investigated. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.kompozyty.ptmk.net/pliczki/pliki/6_2014_t3_Lach.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
