The electrical properties of some cordierite glass ceramics in the system MgO-Al2O3-SiO2-TiO2

Owate, I. O.; Freer, Robert

doi:10.1007/bf00580163

Cited by 28 publications

(7 citation statements)

References 9 publications

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“…7. This dependence is indicated by the leastsquares fit with a slope of -0.5 and is in accordance with literature results [5][6][7][8][9].…”

Section: Discussionsupporting

confidence: 91%

“…[14]. But if this were the case, there should not be an effect of the surface treatment on the breakdown strength [5,19]. and m bd is still possible.…”

Section: Discussionmentioning

confidence: 99%

“…In order to proof the known thicknessdependence of the breakdown strength [5][6][7][8][9] alumina samples without rice starch AO-R0 were ground to thicknesses of 0.3, 0.5, 1.0 and 1.5 mm. Alumina samples with rice starch AO-R2 were ground to thicknesses of 0.5 and 1.0 mm.…”

Section: Sample Preparationmentioning

confidence: 99%

“…It is assumed that the initiation of breakdown happens, due to a sudden destabilization of trapped charges [1][2][3], which causes a current flow through the material. The breakdown strength, E b , defined as breakdown voltage, V b , per sample thickness, t, is reported to be dependent on the microstructure [2][3][4], sample thickness [5][6][7][8][9] and loading condition [8,[10][11][12]. The influence of the porosity [2,[13][14][15], grain size [2-4, 13, 15-17], purity and secondary phase [2-4, 6, 7] on the breakdown strength have been investigated.…”

Section: Introductionmentioning

confidence: 99%

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Thickness-dependence of the breakdown strength: Analysis of the dielectric and mechanical failure

Neusel

Jelitto

Schmidt

et al. 2015

Journal of the European Ceramic Society

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The breakdown strength as well as the mechanical strength of ceramic materials decreases with increasing volume. The volume-effect of the mechanical strength can be explained by the Weibull theory. For the breakdown strength the same explanation has been often assumed.In order to validate this assumption breakdown strength and mechanical strength of alumina samples with defined porosities were compared. Differences in the Weibull moduli of breakdown and mechanical strength distributions indicate that the volume-effect cannot explain the thickness-dependence of the breakdown strength. In particular, the thicknessdependence of the breakdown strength always leads to a Weibull modulus of two which is not 2 in agreement with the measured Weibull moduli for samples with constant thickness. It can be concluded that the thickness-dependence of the breakdown strength cannot be explained by the Weibull concept. A recently developed breakdown model which is based on space charge injection is able to explain the experimental results.

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“…7. This dependence is indicated by the leastsquares fit with a slope of -0.5 and is in accordance with literature results [5][6][7][8][9].…”

Section: Discussionsupporting

confidence: 91%

“…[14]. But if this were the case, there should not be an effect of the surface treatment on the breakdown strength [5,19]. and m bd is still possible.…”

Section: Discussionmentioning

confidence: 99%

Section: Sample Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thickness-dependence of the breakdown strength: Analysis of the dielectric and mechanical failure

Neusel

Jelitto

Schmidt

et al. 2015

Journal of the European Ceramic Society

View full text Add to dashboard Cite

show abstract

“…33 For thin films, the breakdown process can be described by an intrinsic, electric breakdown model originally proposed by von Hippel. [34][35][36] Bulk samples show a dependence of the breakdown strength on the sample thickness, 33,[37][38][39] which cannot be explained by the intrinsic, electric breakdown model. Different breakdown mechanisms of bulk samples and thin films might also be associated with different conduction mechanisms.…”

Section: Introductionmentioning

confidence: 99%