ASTM F19-11

Standard Test Method for Tension and Vacuum Testing Metallized Ceramic Seals

ABSTRACT
This test method establishes the standard procedures for conducting tension and vacuum tests on metal-ceramic seals to determine the bond strength of brazed, metalized ceramics. This test method is, however, not to be considered as an absolute tension test for the ceramic. This method requires the use of appropriate testing machines and various types of gripping devices.
SIGNIFICANCE AND USE
This test method covers procedures for conducting tension and vacuum tests on metal-ceramic seals.
This test method is not to be considered as an absolute tension test for the ceramic.
This test method is suitable for quality control and research and development use.
SCOPE
1.1 This test method covers procedures for conducting tension and vacuum tests on metal-ceramic seals to determine the bond strength of brazed, metallized ceramics.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2011
• ICS: 21.140 - Seals, glands
• Technical Committee: F01 - Electronics
• Drafting Committee: F01.03 - Metallic Materials, Wire Bonding, and Flip Chip

Relations

• Replaces: ASTM F19-64(2005)e1 - Standard Test Method for Tension and Vacuum Testing Metallized Ceramic Seals
• Effective Date: 01-Jun-2011
• Referred By: ASTM F44-21 - Standard Specification for Metallized Surfaces on Ceramic (Withdrawn 2023)
• Effective Date: 01-Jun-2011
• Referred By: ASTM D2442-75(2020) - Standard Specification for Alumina Ceramics for Electrical and Electronic Applications
• Effective Date: 01-Jun-2011
• Referred By: ASTM F106-12(2017) - Standard Specification for Brazing Filler Metals for Electron Devices
• Effective Date: 01-Jun-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F19 − 11
StandardTest Method for
1
Tension and Vacuum Testing Metallized Ceramic Seals
ThisstandardisissuedunderthefixeddesignationF19;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Apparatus
1.1 This test method covers procedures for conducting
5.1 Testing Machines—Machines used for tension testing
tension and vacuum tests on metal-ceramic seals to determine
shall conform to the requirements of Methods E4. Only loads
the bond strength of brazed, metallized ceramics.
that are within the loading range of the testing machine, as
defined in Methods E4, shall be used for determining tensile
1.2 The values stated in inch-pound units are to be regarded
strengths.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
5.2 Gripping Devices—Various types of gripping devices
and are not considered standard.
may be used to apply the load to the test specimen. Those
1.3 This standard does not purport to address all of the shown in Fig. 1 are recommended, but regardless of which
safety concerns, if any, associated with its use. It is the grips are used, care shall be taken that the axis of the test
specimenisinalignmentwiththecenterlineofthetestmachine
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- heads.
bility of regulatory limitations prior to use.
6. Preparation of Specimens
2. Referenced Documents
6.1 Preparethetestspecimenbybrazingtogethertwopieces
2
2.1 ASTM Standards:
of ceramic, shown in Fig. 2, at their respective metalized
E4Practices for Force Verification of Testing Machines
surfaces, as described in 6.1.1 to 6.1.3:
E6Terminology Relating to Methods of Mechanical Testing
6.1.1 Ceramics—Grind the test surface, A,(Fig. 2)ofthe
two ceramic parts flat to within 0.00025 in. (0.0064 mm)
3. Terminology
according to good grinding practice using an abrasive passing
3.1 Definitions:
or finer than a No. 100 (150-µm) sieve.The ground surface, A,
3.1.1 The definitions of terms relating to tension testing
of each part shall be parallel to shoulder C, as shown in Fig. 2,
appearing in Terminology E6, shall apply to the terms used in
consistent with the best commercial practice. The over-all
this test method.
appearance of each ceramic half of the test specimen shall
indicate good commercial practice, and shall be free from
4. Significance and Use
obvious defects. In the results of the test, report the method of
manufacture of the specimen components, that is, slip cast,
4.1 This test method covers procedures for conducting
hotpressed, hydrostatically molded, etc. Measure and record
tension and vacuum tests on metal-ceramic seals.
the test surface area of each ceramic half on a projection
4.2 This test method is not to be considered as an absolute
comparator, or by other suitable means. Dye check the two
tension test for the ceramic.
ceramic parts and inspect them for flaws (Note 1). Reject all
4.3 This test method is suitable for quality control and
partsshowingflawsconsideredconducivetoabnormalfailures
research and development use.
of either ceramic part.
NOTE 1—A suggested dye check procedure is described in the Appen-
dix.
1
This test method is under the jurisdiction of ASTM Committee F01 on
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
6.1.2 Metallized Coating—Metallize the specimen halves
Materials.
under identical conditions, that is, temperature, atmosphere,
CurrenteditionapprovedJune1,2011.PublishedJuly2011.Originallyapproved
ε1
etc. The type of metallizing used is optional, or as mutually
in 1961 as F19 – 61T. Last previous edition approved in 2005 as F19 – 64(2005) .
DOI: 10.1520/F0019-11.
agreed upon between producer and consumer. Apply the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
metallizing coating only to the test surface A, Fig. 2, on the
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
specimen. The method of metallizing is optional, that is, silk
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. screen, brush, spray, roller, etc., but should be reported.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F19−11
NOTE 1—Tolerance on all dimensions shown, 60.016 in. (0.41 mm).
FIG. 1 Self Aligning Grip for Tension Test
A—Seal surface area to be metalized.
B—Surface inscribed with date as to ceramic batch and fi
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:F19–64(Reapproved2005) Designation:F19–11
Standard Test Method for
1
Tension and Vacuum Testing Metallized Ceramic Seals
ThisstandardisissuedunderthefixeddesignationF19;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1
´ NOTE—In 6.1, cm was editorially changed to cc in January 2005.
1. Scope
1.1 This test method covers procedures for conducting tension and vacuum tests on metal-ceramic seals to determine the bond
strength of brazed, metallized ceramics. This test method is not to be considered as an absolute tension test for the ceramic.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E4 Practices for Force Verification of Testing Machines
E6 Terminology Relating to Methods of Mechanical Testing
3. Terminology
3.1 DefinitionsDefinitions::
3.1.1 The definitions of terms relating to tension testing appearing in DefinitionsTerminology E6, shall apply to the terms used
in this test method.
4. Significance and Use
4.1 This test method covers procedures for conducting tension and vacuum tests on metal-ceramic seals.
4.2 This test method is not to be considered as an absolute tension test for the ceramic.
4.3 This test method is suitable for quality control and research and development use.
5. Apparatus
4.1
5.1 Testing Machines—MachinesusedfortensiontestingshallconformtotherequirementsofMethodsE4.Onlyloadsthatare
within the loading range of the testing machine, as defined in Methods E4, shall be used for determining tensile strengths.
4.2
5.2 Gripping Devices—Various types of gripping devices may be used to apply the load to the test specimen. Those shown in
Fig.1arerecommended,butregardlessofwhichgripsareused,careshallbetakenthattheaxisofthetestspecimenisinalignment
with the centerline of the test machine heads.
5.
6. Preparation of Specimens
56.1 Preparethetestspecimenbybrazingtogethertwopiecesofceramic,showninFig.2,attheirrespectivemetalizedsurfaces,
as described in 5.1.1 6.1.1 to 5.1.36.1.3:
5.1.1
1
This test method is under the jurisdiction of ASTM Committee F01 on Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic Materials.
Current edition approved Jan.June 1, 2005.2011. Published January 2005.July 2011. Originally approved in 1961 as F19 – 61T. Last previous edition approved in
´1
20002005 as F19 – 64(2000).64(2005) . DOI: 10.1520/F0019-64R05E01.10.1520/F0019-11.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F19–11
NOTE 1—Tolerance on all dimensions shown, 60.016 in. (0.41 mm).
FIG. 1 Self Aligning Grip for Tension Test
A—Seal surface area to be metalized.
B—Surface inscribed with date as to ceramic batch and firing temperature.
C—Gripping shoulder.
FIG. 2 Ceramic Half of Tension Test Specimen
6.1.1 Ceramics—Grind the test surface, A, (Fig. 2) of the two ceramic parts flat to within 0.00025 in. (0.0064 mm) according
to good grinding practice using an abrasive passing or finer than a No. 100 (150-µm) sieve. The ground surface, A, of each part
shall be parallel to shoulder C, as shown in Fig. 2, consistent with the best commercial practice. The over-all appearance of each
2

---------------------- Page: 2 ----------------------
F19–11
ceramic half of the test specimen shall indicate good commercial practice, and shall be free from obvious defects. In the results
of the test, report the method of manufacture of the specimen components, that is, slip cast, hotpressed, hydrostatically molded,
etc. Measure and record the test surface area of each ceramic half on a projection c
...