10%, complete densification is possible by pressureless sintering. ... Al2O3-SiC ceramic composites are produced using pressureless sintering, and their plasma resistance, ... -SiC sintered body with a high strength over 600 MPa is obtained.
sintering. ... We compacted the Mo nanopowders with ultra high pressure by magnetic pulsed compaction (MPC) before pressureless ... Because this process is expensive and inefficient, studies to improve sintering property of Mo have been
The specimens, pressureless-sintered at for 4 min using infrared heating furnace with the heating rate ... The pressureless sintering behavior of /Cu powder mixtures, prepared from /CuO and /Cu-nitrate, has ... Microstructural observation revealed that powders with nano-sized Cu particles could be synthesized
Cu and SiC phases were obtained by pressureless sintering of PCS-coated SiC and Cu powders. ... sintering at 1000 oC. ... Microstructural observation for the sintered composites showed that the powder mixture of PCS-coated
A sintered body of TiB2-reinforced iron matrix composite (Fe-TiB2) is fabricated by pressureless-sintering ... The powder mixture is prepared in a planetary ball-mill at 700 rpm for 3 h and then pressurelessly sintered ... A maximum hardness of 71.2 HRC is obtained from the specimen sintered at 1400oC for 0.5 h, which is nearly
mixtures to obtain dense bodies by pressureless sintering. ... Results are discussed for nanocrystalline cermet systems and for the sintering of aluminides and silicides ... On the other side the defect-rich microstructure can be used for activated sintering of elemental powder
Two sintering methods of a pressureless sintering and a spark-plasma sinteringare tested to densify the ... The pressureless-sintered powder com-pacts are not densified even after sintering at 1300oC for 3 h, ... Pressureless sintering is performed at 1100, 1200and 1300oC for 1-3 hours in a tube furnace under flowing
Two sintering methods of a pressureless sintering and a spark-plasma sintering are tested to densify ... The pressureless-sintered powder compacts show incomplete densification with a relative denstiy of 86.1% ... Pressureless sintering is performed at 1100, 1200 and 1300oC for 1-3 hours in a tube furnace under flowing
The quartz glasses were prepared by fumed silica powders sintering method at , , in air and the effect ... of sintering temperature on their properties were investigated.
The sintering behavior of the Fe nanopowder agglomerates strongly depended on the powder packing density ... It was discussed in terms of two sintering factors affecting the entire densification process of the ... Sintering behavior of iron nanopowder agglomerate compact prepared by slurry compaction method was investigated
The milled powders were pressureless-sintered at for 4 h under atmosphere. ... This powder showed excellent sinterability leading to full densification after sintering at for 4 h. ... milling time and sintering temperature and the newly-secondary phase of ZrN was observed due to the reaction
The Fe sintered part was fabricated by pressureless sintering of the Fe nanopowder at in which the nanopowder ... This study has been performed on the full density sintering of Fe nanopowder and the surface hardening ... 12 thickness, leading to the surface hardening of the sintered Fe part.
In this study, the metal filters were fabricated by pressureless sintering method. ... The compacted filter were sintered in the vacuum sintering furnace at 120 for 1 hour. ... The mixture of stainless steel powders and filler metal binder solved in the water solutions of 5% PVA
The specimen is then able to be sintered pressurelessly. ... In this case porosity could be controlled from 38 to 45% with good mechanical strength at sintering temperature ... SPS(Spark Plasma Sintering ) is known to be an excellent sintering method for porous materials.
ones of 380~460kJ/mol-1 for pressureless sintering of micron-scale tungsten powders. ... plasma sintering was investigated. ... The reduction-treated tungsten powders were spark-plasma sintered at 1200-1600˚C for 100-3600 sec. with
The microstructures and indentation fracture of pressureless-sintered crystalline were investigated ... as a basic study for the application of weak phase of fibrous monolithic composites. ... The main fracture mode was a typical intergranular fracture, and showed remarkable micro-cracking effect
Porous (Ba,Sr) ceramics were prepared by pressureless sintering at for 1h under air. ... The porosity of porous (Ba,Sr) ceramics increased from 6.97% to 18.22% and the grain size slightly decreased ... PTCR jump of the (Ba,Sr) ceramics prepared by adding carbon black was more than , and slightly increased