scholarly journals Fabrication of Al2O3-Bonded Fibrous Ceramics by An Aqueous Gel-Casting Process

2019 ◽  
Vol 678 ◽  
pp. 012093
Author(s):  
Zhenli Liu ◽  
Jingkun Yu ◽  
Chen Tian ◽  
Chaoyue Li ◽  
Lei Yuan
Keyword(s):  
Casting Process ◽  
Gel Casting ◽  
Fibrous Ceramics

Preparation of MgO–Y2O3 Composite Ceramic by Aqueous Gel Casting

2021 ◽  
Vol 16 (3) ◽  
pp. 444-451
Author(s):  
Liangwen Liu ◽  
Mu Zhang ◽  
Xing’an Wang ◽  
Xudong Sun
Keyword(s):  
Casting Process ◽  
Composite Ceramic ◽  
Ethanol Solution ◽  
Zeta Potentials ◽  
Gel Casting ◽  
Modification Process ◽  
Die Pressing ◽  
Ft Ir ◽  
Temperature And Pressure ◽  
Better Than

MgO–Y2O3 composite ceramics were prepared by gel-casting technology. The surface of MgO powder is passivated with H3PO4 ethanol solution. The treated powder can be dispersed in water with a dispersant. The powder surface modification process was verified by pH, Zeta potentials, Fourier transmission infrared absorption spectroscopy (FT-IR), the absorbance of suspension and rheological properties. The obtained stable suspensions were gel cast, dried, and sintered at 1400 °C for 30 min under 35 MPa. As a comparison, the powder was compressed by die pressing and sintered at the same temperature and pressure. After sintering, the MgO–Y2O3 composite ceramic with a theoretical density of 97.29% can be prepared by aqueous gel casting process. The properties of MgO–Y2O3 composite ceramic fabricated by gel casting are better than die pressing.

Sintering behavior and electrical conductivity of Ce0.9Gd0.1O1.95 powder prepared by the gel-casting process

2003 ◽  
Vol 78 (3) ◽  
pp. 791-795 ◽  
Author(s):  
Ji-Gui Cheng ◽  
Shao-Wu Zha ◽  
Jia Huang ◽  
Xing-Qin Liu ◽  
Guang-Yao Meng
Keyword(s):  
Electrical Conductivity ◽  
Casting Process ◽  
Sintering Behavior ◽  
Gel Casting

Microstructure and mechanical properties of hydroxyapatite obtained by gel-casting process

2008 ◽  
Vol 34 (2) ◽  
pp. 359-364 ◽  
Author(s):  
Biqin Chen ◽  
Tao Zhang ◽  
Jingxian Zhang ◽  
Qingling Lin ◽  
Dongliang Jiang
Keyword(s):  
Mechanical Properties ◽  
Casting Process ◽  
Gel Casting ◽  
Microstructure And Mechanical Properties

Fabrication and properties of mullite fiber matrix porous ceramics by a TBA-based gel-casting process

2013 ◽  
Vol 33 (4) ◽  
pp. 717-725 ◽  
Author(s):  
Zhenguang Hou ◽  
Haiyan Du ◽  
Jiachen Liu ◽  
Ruihua Hao ◽  
Xue Dong ◽  
...  
Keyword(s):  
Casting Process ◽  
Porous Ceramics ◽  
Gel Casting ◽  
Mullite Fiber ◽  
Fiber Matrix

Analysis and Evaluation of Different Influencing Factors in Processing of Hollow and Full Beads by Alginate Gelation Based on Zirconia and TRIP Steel

2015 ◽  
Vol 825-826 ◽  
pp. 158-166
Author(s):  
Marie Oppelt ◽  
Christos G. Aneziris
Keyword(s):  
Casting Process ◽  
Steel Powder ◽  
Composite Bead ◽  
Analysis And Evaluation ◽  
Metastable Austenitic Steel ◽  
Gel Casting ◽  
Innovative Process ◽  
Hollow Space ◽  
Sodium And Potassium ◽  
Hollow Metal

A novel and innovative process for full as well as hollow metal-matrix composite bead fabrication using gel-casting process by alginate gelation is investigated. In particular the influence of four different alginates and various solidifying agents have been investigated regarding the formation and stability of full and hollow beads. The suspension contained a metastable austenitic steel powder (16Cr7Mn3Ni) and zirconia particles as well as different alginates and was added dropwise into water containing different solidifying agents for forming beads. With the aid of sodium and potassium alginate dropped in solution with CaCl2, full metal beads have been obtained. Hollow beads have been produced using potassium alginate and Ca (OH)2 as solidifying agent and show a hollow space fraction of 65%. At lower strains (up to 15 %), all zirconia reinforced full steel beads obtain higher specific energy absorption (SEA) in comparison to pure steel beads.

Preparation of RBSC Green Bodies by Gel-Casting

2008 ◽  
Vol 368-372 ◽  
pp. 834-836
Author(s):  
Hai Lin Liu ◽  
Yu Feng Chen ◽  
Hua Wang ◽  
Jie Tang
Keyword(s):  
Silicon Carbide ◽  
Flexural Strength ◽  
Monomer Concentration ◽  
Casting Process ◽  
Green Body ◽  
Carbon Particles ◽  
Gel Casting ◽  
Monomer Content ◽  
Silicon Carbide Particles ◽  
Carbide Particles

In this paper, green bodies of RBSC were prepared through the gel-casting process. The effects of monomer concentration and ratio of MBAM to AM on the strength and microstructure of the green bodies were studied. When the monomer content increased from 10wt% to 20wt %( relative to water in the slurry), the flexural strength increases efficiency. However, the flexural strength decreases when the monomer content was above 20wt%. Similarly, when the ratio of MBAM to AM increased from 1/19 to 1/9, it had the same effects on the flexural strength of green bodies. It was found that silicon carbide particles were packaged by the carbon particles with gel. When the monomer content was 20wt% and the ratio of MBAM to AM was 1/9, the green body showed the best homogeneous microstructures and its flexural strength achieved 8MPa.

Optimized processing of defect-free porous alumina by gel casting process

2018 ◽  
Vol 26 (3) ◽  
pp. 619-630 ◽  
Author(s):  
Devavarapu Soumya ◽  
Santanu Bhattacharyya
Keyword(s):  
Porous Alumina ◽  
Casting Process ◽  
Gel Casting
Sign in / Sign up

Export Citation Format

Share Document