In situ formation of LaAl11O18 rodlike particles in ZTA ceramics and effect on the mechanical properties

Guo, Ruisong; Guo, Dong; Chen, Y; Yang, Zhifang; Yuan, Quan

doi:10.1016/s0272-8842(02)00031-7

Cited by 42 publications

(19 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ropp [11,16]. Guo et al [12] and Kern [13] studied the effect of in situ formation of LA6 rodlike particles in ZTA ceramics on their mechanical properties. They showed that the presence of the rodlike particles enhances the sintering process at temperature.…”

Section: -Introductionmentioning

confidence: 99%

“…On the other hand, the noticeable degradation of samples L 3 and L 4 bending strength is due to the increase in their porosity content. Guo et al [12] found that the bending strength decreased when LaAl 11 O 18 content is over 24%. They stated that it is due to the partial transformation of t-ZrO 2 to m-ZrO 2 , which led to the reduction in the Young's modulus.…”

mentioning

confidence: 99%

See 1 more Smart Citation

In-situ sintering reaction of Al2O3–LaAl11O18–ZrO2 composite

Naga

Hassan

El-Maghraby

et al. 2016

International Journal of Refractory Metals and Hard Materials

View full text Add to dashboard Cite

Section: -Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

In-situ sintering reaction of Al2O3–LaAl11O18–ZrO2 composite

Naga

Hassan

El-Maghraby

et al. 2016

International Journal of Refractory Metals and Hard Materials

View full text Add to dashboard Cite

“…The capillary glass flow through the open porosity of partially sintered alumina and the solution/precipitation of alumina in the glass phase are the main causes for its high anisotropic growth. Guo et al [18] lattice might occur, mainly due to the wetting of alumina particles by the glass phase. In this case, solutionprecipitation mechanism as proposed by German [20] could occur.…”

Section: Resultsmentioning

confidence: 99%

Influence of handling and heating cycle on the morphology and flexural strength of glass-infiltrated alumina bars

2008

View full text Add to dashboard Cite

The main goal of the present study was to evaluate the influence of plaster stability, handling and thermal cycling on the morphology and mechanical strength of glass infiltrated alumina bars. Two different slip casting/thermal processing routes were investigated. The highest flexural strength of alumina bars from In-Ceram Alumina protocol in comparison to In-Ceram Sprint protocol was mainly due to its low drying rate and less handling. After glass infiltration and mechanical surface treatments, In-Ceram ® Sprint alumina bars presented a non-homogeneous distribution of alumina particles in the glass phase, which was the mais cause for its lower flexural strength. In both cases, it was observed a strong anisotropic growth of alumina particles after glass infiltration. Non-reproducible mechanical surface treatments is other factor that could deteriorate the mechanical strength of alumina bars.

show abstract

“…By an immersion method, the apparent porosity and bulk density were measured in water under vacuum using Archimedes' principle and calculated according to Eqs. (13) and (14) [18].…”

Section: Characterization Of Samplementioning

confidence: 99%

“…Zhong developed Al 2 O 3 -Sialon and low-carbon Al 2 O 3 -C refractory slide plates using bauxite-based b-Sialon, Al, and Si as main raw materials [12]. Recently, some rare earth oxides such as La 2 O 3 [13,14], Dy 2 O 3 [15], Y 2 O 3 [16], and Sm 2 O 3 [17] or their salt compounds have also been chosen as additives to materials like Al 2 O 3 , MgAl 2 O 4 , AlN, etc. The as-formed ceramic reinforcing phases like LaAl n O 18 , Y 3 Al 5 Oi 2 , YAlO 3 , and SmAlO 3 could remarkably improve mechanical properties and microstructure.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Low-Carbon Al2O3–ZrO2–SiC–C Composite Refractories Containing LaAl11O18 Ceramic Phase

Zhu

et al. 2015

Refract Ind Ceram

View full text Add to dashboard Cite

Low-carbon alumina-zirconia-silicon carbide-graphite (Al 2 O 3 -ZrO 2 -SiC-C, AZSC) composite refractories containing a lanthanum hexaaluminate (LaAl 11 O 18 ) ceramic phase were prepared by the in-situ reaction sintering. The effects of raw materials ratio, sintering temperature, and La 2 O 3 addition on the phase composition, microstructure, shrinkage ratio, apparent porosity, bulk density, and cold crushing strength of the AZSC refractories were investigated. AZSC refractories with good properties can be prepared at 1723 and 1773 K for 3 h. During the sintering process, t-ZrO 2 , c-ZrO 2 , and b-SiC formed due to an in-situ reaction between ZrSiO 4 and C. La 2 O 3 reacted with Al 2 O 3 to produce LaAl 11 O 18 , which was platelike and formed on the Al 2 O 3 matrix. The enhancement of properties was attributed to the formation of t-ZrO 2 , c-ZrO 2 , b-SiC, and LaAl 11 O 18 in the AZSC refractories.

show abstract

In situ formation of LaAl11O18 rodlike particles in ZTA ceramics and effect on the mechanical properties

Cited by 42 publications

References 11 publications

In-situ sintering reaction of Al2O3–LaAl11O18–ZrO2 composite

In-situ sintering reaction of Al2O3–LaAl11O18–ZrO2 composite

Influence of handling and heating cycle on the morphology and flexural strength of glass-infiltrated alumina bars

Preparation and Properties of Low-Carbon Al2O3–ZrO2–SiC–C Composite Refractories Containing LaAl11O18 Ceramic Phase

Contact Info

Product

Resources

About