Results 151 to 160 of about 2,006 (195)
Some of the next articles are maybe not open access.
Applied Mechanics and Materials, 2012
Aqueous gel-casting of beryllia using polyelectrolyte NH4PAA as a dispersant has been investigated. The effects of the dispersant amount, pH values on the surface properties of BeO powders in aqueous solvent were studied and high solids loading BeO suspension (45 vol.%) was developed.
openaire +1 more source
Aqueous gel-casting of beryllia using polyelectrolyte NH4PAA as a dispersant has been investigated. The effects of the dispersant amount, pH values on the surface properties of BeO powders in aqueous solvent were studied and high solids loading BeO suspension (45 vol.%) was developed.
openaire +1 more source
Gelcasting of porous titanium implants
Powder Metallurgy, 2008Porous titanium implants with large size and complex shape were successfully fabricated by a novel near net forming process, gelcasting, and the effects of processing parameters on the viscosity of...
Y. Li, Z. M. Guo, J. J. Hao, S. B. Ren
openaire +1 more source
Gelcasting of Non-oxide Ceramics
2020In this chapter, the non-oxide powder surface characteristics before and after treatment, and the effect of surface modification on the solids loading of its aqueous suspension were studied. For Si3N4 powders, a universal method to prepare highly concentrated suspensions has been established.
Jinlong Yang, Yong Huang
openaire +1 more source
Gelcasting of Alumina-Spinel Refractories
Key Engineering Materials, 2008The preparation process of alumina-spinel slurries by using micro-sized alumina-spinel mixtures as raw materials was investigated. The slurries with solids content of 62 vol% and viscosity of 0.3 Pa·s were prepared by adding self-made dispersant ANSP which was a mixture of AN-2000 and STP in mass ratio of 4 to 1.
Kai Qi Liu +4 more
openaire +1 more source
Gelcasting of alumina–chitosan beads
Ceramics International, 2011Abstract Several papers have reported the advantageous combination of chitosan and ceramic particles for such applications as biomimetic scaffolds, membranes, pollution remediation and gelcasting complex shapes. This work presents a novel gelcasting consolidation mechanism, based on the effects of pH changes on chitosan solubility and zeta potential ...
Jamile Brandi +3 more
openaire +1 more source
Controllable Forming Technology in Gelcasting
Materials Science Forum, 2005Controllable forming technology is one of the key problems for the industrial application of gelcasting. In order to solve this problem, various kinds of influence factors in gelcasting were investigated. Trace ions, ionic strength, pH, dispersant agent, premix, amount of initiator and catalyst, temperature, pressure, materials of container and ...
Jin Long Yang, Chun Lei Dai, Yong Huang
openaire +1 more source
Gelcasting of 316L stainless steel
Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material, 2007Abstract A novel near-net process, gelcasting, was successfully used to prepare larger size 316L stainless steel parts with complex shape. In this study, the effects of process parameters on the viscosity of the slurry and the dry green strength were investigated.
Yan Li, Zhimeng Guo, Junjie Hao
openaire +1 more source
Gelcasting of Mechanochemically Synthesized Hydroxyapatite
Key Engineering Materials, 2007Hydroxyapatite powders were prepared via mechanochemical synthesis method. The starting reagents for HAP powders were vibration ball milled for 2 h and then calcined at 800°C for 1 h. X-ray diffraction patterns and IR spectrum shown that pure crystalline apatite powder (HAP) was obtained.
Yu Jia +4 more
openaire +1 more source
Tribological Behaviors of Dense Gelcasting Nanocomposites
Materials Science Forum, 2016Gelcasting/pressure less sintered Al2O3/SiC nanocomposites has a low sinterability. Also, mechanical and wear properties of these nanocomposites was degraded. Wear mechanism of low sinterability gelcasting nanocomposites was dominated by fracture mode of surface during wear tests. In this study, gelcasting processing and followed plressureless (PL) and
Sung Hun Cho +5 more
openaire +1 more source
Gelcasting process of Al2O3/Ni nanocomposites
Materials Letters, 2004Abstract Al2O3/Ni nanocomposites were fabricated by gelcasting an Al2O3/NiO mixture, followed by reduction–sintering process. Dispersant quantity was optimized at 1.75 wt.% with measurement of rheological behaviors to determine the best dispersion state of binary oxides colloidal suspension for casting.
B.-S. Kim +6 more
openaire +1 more source