In-situ growth of needlelike LaAl11O18 for reinforcement of alumina composites
Source abstract
Abstract
Abstract In situ growth of needlelike LaAl11O18 grains reinforcing Al2O3 composites can be fabricated by a coprecipitation method using La(NO3)3 6H2O and Al(NO3)3 9H2O as starting materials. The new two-step process involved firstly preparing needlelike LaAl11O18 grains distributed homogeneously in Al2O3 powder and then pressureless sintering the composite powders. The Al2O3/25 vol.%LaAl11O18 samples pressureless sintered at 1550°C for 4 h achieve relative density up to 96.5% and exhibit a bending strength of 420±30 MPa and a fracture toughness of 4.3±0.4 MPa m1/2.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · MXene and MAX Phase Materials · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (11)
Show source-provided references
1. Dorre · 1984
2. T.N. Tiegs, P.F. Becher, Particulate- and whisker-toughened alumina composites, in: Proceedings of the 22nd Automotive Technology Development Contractors' Coordination Meeting, 1985, pp. 479–485.
3. Toughening behavior in whiskers-reinforced ceramic matrix composites10.1111/j.1151-2916.1988.tb05791.x ↗
4. Microstructural design of toughening ceramics10.1111/j.1151-2916.1991.tb06872.x ↗
5. Colloidal processing of SiC whisker composite10.1111/j.1151-2916.1995.tb08646.x ↗
6. Toxicity of silicon carbide whisker10.1007/BF01730738 ↗
7. In-situ alumina/aluminate compisites10.1111/j.1151-2916.1992.tb05623.x ↗
8. Morphology of corundum crystallized by heating mixture of Al2O3 and AlF310.1016/0022-0248(86)90049-7 ↗
9. Solid state kinetic of LaAl11O1810.1111/j.1151-2916.1980.tb10203.x ↗
10. The crystal structure of lanthanum aluminate10.1016/0022-4596(84)90132-4 ↗
11. Sintering with rigid inclusions10.1111/j.1151-2916.1990.tb05090.x ↗