Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Standard Test Method for Adhesion or Cohesion Strength of Thermal Spray Coatings
Automaticky preložený názov:
Štandardná skúšobná metóda pre priľnavosť a súdržnosti posilnenie Thermal nástreky
NORMA vydaná dňa 1.12.2013
Označenie normy: ASTM C633-13
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.12.2013
Kód tovaru: NS-14341
Počet strán: 8
Približná hmotnosť: 24 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
adhesion strength, cohesion strength, fracture locus, thermal spray coatings, ICS Number Code 25.220.40 (Metallic coatings)
Significance and Use | ||
3.1 This test method is recommended for quality control, acceptance testing; or it may help to develop or qualify a thermal spray operator's equipment and procedure or to aid in developing thermal spray coatings with improved adhesion and integrity. 3.2 This test method is useful for comparing adhesion or cohesion strengths of coatings of similar types of thermal spray materials. The test should not be considered to provide an intrinsic value for direct use in making calculations, such as to determine if a coating will withstand specific environmental stresses. Because of residual stresses in thermal spray coatings, actual strength depends upon the shape of the particular coated part. Also, in use, a coating may be stressed in a more complex manner than is practical for a standard test. |
||
1. Scope | ||
1.1 This test method covers the determination of the degree of adhesion (bonding strength) of a coating to a substrate or the cohesion strength of the coating in a tension normal to the surface. The test consists of coating one face of a substrate fixture, bonding this coating to the face of a loading fixture, and subjecting this assembly of coating and fixtures to a tensile load normal to the plane of the coating. It is adapted particularly for testing coatings applied by thermal spray, which is defined to include the combustion flame, plasma arc, two-wire arc, high-velocity oxygen fuel, and detonation processes for spraying feedstock, which may be in the form of, wire, rod, or powder. 1.2 Usually this test method is
performed at ambient temperature. Higher temperature testing is
restricted by the need for a suitable adhesive bonding agent. For
certain fundamental investigations, it is suggested that very low
(cryogenic) temperature be used.
1.3 This test method is limited to testing thermal spray coatings that can be applied in thickness greater than 0.015 in. (0.38 mm). The limitation is imposed because an adhesive bonding agent is used in the test. Those bonding agents established so far for this method tend to penetrate thermal spray coatings and may invalidate results unless the coatings are thick enough to prevent penetration through the coating. Further development may establish that thin layers of certain types of especially dense coatings may be tested satisfactorily. Alternatively, new adhesive bonding agents that would allow reduction of the minimum thickness limitation may become available. 1.4 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. 1.5 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 limitations prior to use. |
||
2. Referenced Documents | ||
|
Historická
15.5.2013
Historická
1.9.2014
Historická
1.11.2010
Historická
1.12.2013
Historická
1.11.2010
Historická
1.9.2009
Posledná aktualizácia: 2024-11-01 (Počet položiek: 2 208 817)
© Copyright 2024 NORMSERVIS s.r.o.