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ASTM-F140:2008 Edition

ASTM-F140:2008 Edition

$40.63

F140-98(2008) Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods

Published By Publication Date Number of Pages
ASTM 2008 6
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1.1 This practice covers the preparation and testing of reference glass-metal butt seals of two general configurations: one applicable to determining stress in the glass and the other to determining the degree of mismatch of thermal expansion (or contraction). Tests are in accordance with Test Method F 218 (Section 1.1).

1.2 This practice applies to all glass and metal (or alloy) combinations normally sealed together in the production of electronic components. It should not be attempted with glass-metal combinations having widely divergent thermal expansion (or contraction) properties.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Summary of Practice
Significance and Use
Apparatus
Materials
2 Test Specimen
Preparation of Specimens
Procedure for Making the Butt-Seal
FIG. 1
FIG. 2
FIG. 3
3 Annealing
Procedure for Measuring Optical Retardation
Calculations
4 Report
FIG. 4
5 Keywords
A1. DIRECTIONS FOR CLEANING AND HEAT-TREATING SPECIMENS OF GLASS AND METAL FOR MAKING SEALS
A1.1
A1.2
A1.3
A1.4
A1.5
A2. SUGGESTED METHODS FOR MAKING BUTT SEALS
A2.1
A2.2
A2.3
FIG. A2.1
6 A2.4
A2.5
FIG. A2.2

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