Performance of Y-TZP Materials Between 800 C and 1200 C

reportActive / Technical Report | Accession Number: ADA217723 | Open PDF

Abstract:

The performance of seven yttria-tetragonal zirconia polycrystal materials in the 800 C to 1200 C temperature range was examined using stepped- temperature stress-rupture tests. The strength in this temperature range was significantly lower than the room temperature strength. This is due to a decrease in the chemical driving force for the tetragonal-to-monoclinic transformation. As a result, these materials are not suitable for high temperature structural applications. At these temperatures the strength is controlled by microstructural parameters such as grain size, grain size distribution, and porosity. Keywords Ceramic materials.

Author(s):
Swab, Jeffrey J.
Author Organization(s):
ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB
Descriptive Note:
Final rept.
Pagination:
0016

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
MTL-TR-90-3
Project Number(s):
1L162105AH84
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.2_Understand; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_3.2_Engagement; JCA_3_Force Application; JCA_1_Force Support; JCA_3.2.1_Kinetic Means; JCA_1.3_Human Capital Management; JCA_4.6_Engineering; JCA_6_Net Centric; JCA_1.3.2_Personnel Management; JCA_6.1.2_Wireless Transmission
Modernization Areas:
Space
Communities of Interest:
Space
Descriptor(s):
*THERMAL RESISTANCE, *CERAMIC MATERIALS, *YTTRIUM COMPOUNDS, *ZIRCONIUM OXIDES, *STRENGTH(MECHANICS), *CRYSTALS, TEST METHODS, GRAIN SIZE, POROSITY, RUPTURE, ROOM TEMPERATURE, TRANSITIONS, RANGE(EXTREMES), THERMAL STRESSES, FORCE(MECHANICS), HIGH TEMPERATURE, PARAMETERS, CHEMICALS, DISTRIBUTION, CRYSTAL STRUCTURE, CONTROL, MICROSTRUCTURE
Field(s)/Group(s):
Ceramics, Refractories and Glass, Mechanics
Keyword(s):
ASH84, PE62105A, TETRAGONAL STRUCTURE, MONOCLINIC STRUCTURE
Report Date:
1990 Jan 01