ONORM EN 821-1 : 1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ADVANCED TECHNICAL CERAMICS - MONOLITHIC CERAMICS - THERMO-PHYSICAL PROPERTIES - DETERMINATION OF THERMAL EXPANSION
22-04-2021
12-01-2013
Foreword
1. Scope
2. Normative references
3. Definitions
4. Principle
5. Apparatus
6. Test pieces
7. Procedure
8. Calculation of results
9. Reporting of results
10. Test report
ANNEXES
A (normative) Calibration of apparatus (direct-
measuring instruments)
B (normative) Calibration of apparatus (differential
type)
C (informative) Thermal expansion reference data
D (informative) Bibliography
TABLES
1. Requirements for accuracy levels A and B
2. Thermal expansion reference data
FIGURES
1. Schematic diagrams of apparatus arrangements
2. Suitable constructions of test piece holders in
silica and alumina
3. Silica ball test piece support and carrier
4. Example of arrangement of differential thermocouples
to monitor temperature distribution in the test
piece, where T1, T2, are differential temperatures
5. Test pieces with a) rounded ends for use with flat
plate and push rod surfaces and b) flat square ends
for use with rounded end plate and push rod surfaces
in a conventional horizontal dilatometer
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