Processing and characterization of alumina–mullite ceramics

Sadik, Chaouki; Amrani, Iz-Eddine El; Albizane, A.

doi:10.1016/j.jascer.2014.07.006

Cited by 41 publications

(26 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is likely because its content is too low to be detected. 17) Apart from the characteristic peak of alumina, however, characteristic peak of SiO 2 appears at about 22°in the XRD spectrogram, while this peak does not exist in the sample sintered under 900°C. This characteristic peak turns up under 1100°C with the rise of sintering temperature, and apparent characteristic peak exits under 1500°C.…”

Section: Phase Analysismentioning

confidence: 91%

Conversion study and mechanical properties of alumina bubble ceramics prepared from a silicone rubber binder precursor

Ruiming

Dong

et al. 2018

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

Alumina bubble ceramics is a light-weight high-strength thermal insulation material of excellent properties with a wide-range application. Binder is the key to its preparation. Binder enables the alumina bubbles to be bonded together to form alumina bubble ceramics with mechanical properties. We report a new method of preparing alumina bubble ceramics with a binder precursor®silicone rubber. The transition of silicone rubber from organic to inorganic substance occurs during the sintering process. Moreover, the binder formed during the transformation coated and bonded alumina bubbles well. Compressive strength of prepared samples was up to 7.5 MPa. For their light weight, high strength, such materials can be adopted as thermal insulations, with prospective application for spacecraft thermal sealing. Due to the good molding characteristic, excellent green body elasticity, and high machinability, this method can be used to prepare samples of complex shapes and precise dimensions.

show abstract

Section: Phase Analysismentioning

confidence: 91%

Conversion study and mechanical properties of alumina bubble ceramics prepared from a silicone rubber binder precursor

Ruiming

Dong

et al. 2018

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

show abstract

“…Alumina ceramics can be successfully sintered with a densification level of 93.16 % at sintering temperature 1400 o C and with the addition of 10 % wt.of glass beads additives. The properties of ceramic alumina at this condition are bulk density value = 3.68 g/cm 3 , firing shrinkage value = 15.23 %, vickers hardness value = 780.4 Hv (7.65 GPa). The sintered 1400 o C of ceramic alumina with additive 5 % and 10 % of glass beads contain two phases which are corundum as major phase and mullite as minor phase.…”

Section: Conclussionsmentioning

confidence: 95%

“…This indicates that the sintering process is still continuing at higher temperatures. The highest density of 3.68 g/cm 3 was achieved in samples with 10% glass beads and at sintering temperature of 1400 o C. When compared with theoretical density value of Al 2 O 3 that is 3.95 g/cm 3 [11] to the experimental results, it shows that samples with additive 10% glass beads have a density level of 93.16% with a sintering temperature of 1400 o C. These results indicate that the glass beads can accelerate and promotes the densification during sintering stage. Figure 2 shows relationship between firing shrinkage and temperature sintering with different composition additive of glass beads.…”

Section: Experimental Workmentioning

confidence: 99%

“…-6 o C -1 , lSi 3 N 4 =3 x10 -6 o C -1 ) [3]. Therefore, if the mechanical properties of alumina are further improved, it is reasonable to expect that alumina could be widely used for engine part [3].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, if the mechanical properties of alumina are further improved, it is reasonable to expect that alumina could be widely used for engine part [3]. There are some steps for manufacturing of ceramic product, sintering process is one of the most important and crucial part in fabricating ceramic component.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The characterization of ceramic alumina prepared by using additive glass beads

Супрапеди

Muljadi

Sardjono

2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. The ceramic alumina has been made by using additive glass bead (5 and 10 % wt.). There are two kinds of materials, such as : gamma Alumina and glass bead. Synthesis of alumina was done by ball milling for 24 hours, then the mixed powder was dried in drying oven at 100 o C for 6 hours. Furthermore, the dried powder was mixed by using 2 % of PVA and continued with compacted to form a pellet with pressure of 50 MPA. The next step is sintering process with variation temperature of 1150, 1200, 1250, 1300 and 1400 o C and holding time for 2 hours. The characterization conducted are consist of test density, hardness, shrinkage, and microstructure. The results show that ceramic alumina with addition of 10 % wt. glass bead has the higher value of density, hardness and shrinkage than addition of 5% wt. glass bead. The highest characterization of ceramic alumina with addition 10 % glass bead was achieved at sintering temperature of 1400 o C with density 3.68 g/cm 3 , hardness vickers 780.40 Hv and shrinkage 15.23 %. The XRD results show that it was founds a corrundum (alpha Alumina) as dominant phase and mullite as minor phase.

show abstract

Nanoceramics: Fundamentals and Advanced Perspectives

Vunain

Mishra

et al. 2016

Sol-Gel Based Nanoceramic Materials: Preparation, Properties and Applications

View full text Add to dashboard Cite

Processing and characterization of alumina–mullite ceramics

Cited by 41 publications

References 18 publications

Conversion study and mechanical properties of alumina bubble ceramics prepared from a silicone rubber binder precursor

Conversion study and mechanical properties of alumina bubble ceramics prepared from a silicone rubber binder precursor

The characterization of ceramic alumina prepared by using additive glass beads

Nanoceramics: Fundamentals and Advanced Perspectives

Contact Info

Product

Resources

About