Effect of size of the starting powders on the thermal shock resistance of alumina ceramics

L. Wang; J. L. Shi; H. R. Chen; Z. L. Hua; T. S. Yen

doi:10.1023/A:1006785720122

Effect of size of the starting powders on the thermal shock resistance of alumina ceramics

L. Wang
, J. L. Shi^*
, H. R. Chen
, Z. L. Hua
, T. S. Yen

^*Corresponding author for this work

CAS - Shanghai Institute of Ceramics

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A study was conducted to investigate the effect of size of the starting powders on the thermal shock resistance of alumina ceramics by comparing two kinds of alumina ceramics consisting of different size of starting alumina powders. Fine sized α-Al₂O₃ and coarse-sized α-Al₂O₃ were blended well with MqO and then packed in a graphite coated with BN. Hot-pressing experiments were carried out at 1550-1650°C for 1 h under 12 MPa of applied pressure in a flowing nitrogen gas atmosphere. Results show that the alumina ceramics from the fine-sized powder has a higher strength than that of the coarse-sized powder and are attributed to the fact that the former has a smaller grain size after sintering.

Original language	English
Pages (from-to)	341-342
Number of pages	2
Journal	Journal of Materials Science Letters
Volume	20
Issue number	4
DOIs	https://doi.org/10.1023/A:1006785720122
State	Published - 15 Feb 2001
Externally published	Yes

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title = "Effect of size of the starting powders on the thermal shock resistance of alumina ceramics",

abstract = "A study was conducted to investigate the effect of size of the starting powders on the thermal shock resistance of alumina ceramics by comparing two kinds of alumina ceramics consisting of different size of starting alumina powders. Fine sized α-Al2O3 and coarse-sized α-Al2O3 were blended well with MqO and then packed in a graphite coated with BN. Hot-pressing experiments were carried out at 1550-1650°C for 1 h under 12 MPa of applied pressure in a flowing nitrogen gas atmosphere. Results show that the alumina ceramics from the fine-sized powder has a higher strength than that of the coarse-sized powder and are attributed to the fact that the former has a smaller grain size after sintering.",

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AU - Wang, L.

AU - Shi, J. L.

AU - Chen, H. R.

AU - Hua, Z. L.

AU - Yen, T. S.

PY - 2001/2/15

Y1 - 2001/2/15

N2 - A study was conducted to investigate the effect of size of the starting powders on the thermal shock resistance of alumina ceramics by comparing two kinds of alumina ceramics consisting of different size of starting alumina powders. Fine sized α-Al2O3 and coarse-sized α-Al2O3 were blended well with MqO and then packed in a graphite coated with BN. Hot-pressing experiments were carried out at 1550-1650°C for 1 h under 12 MPa of applied pressure in a flowing nitrogen gas atmosphere. Results show that the alumina ceramics from the fine-sized powder has a higher strength than that of the coarse-sized powder and are attributed to the fact that the former has a smaller grain size after sintering.

AB - A study was conducted to investigate the effect of size of the starting powders on the thermal shock resistance of alumina ceramics by comparing two kinds of alumina ceramics consisting of different size of starting alumina powders. Fine sized α-Al2O3 and coarse-sized α-Al2O3 were blended well with MqO and then packed in a graphite coated with BN. Hot-pressing experiments were carried out at 1550-1650°C for 1 h under 12 MPa of applied pressure in a flowing nitrogen gas atmosphere. Results show that the alumina ceramics from the fine-sized powder has a higher strength than that of the coarse-sized powder and are attributed to the fact that the former has a smaller grain size after sintering.

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SP - 341

EP - 342

JO - Journal of Materials Science Letters

JF - Journal of Materials Science Letters

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ER -

Effect of size of the starting powders on the thermal shock resistance of alumina ceramics

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