Thin film adhesion and deadhesion

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6303273

Mattox, D M

A practical definition of good adhesion is that the interfacial region (or nearby material) does not fail under service conditions nor at unacceptably low stress levels under test conditions. Adhesion is a macroscopic property of the system and the failure of adhesion or deadhesion involves failure of large areas of material the surfaces of which rarely separate at a sharp boundary between two materials. The energy necessary to cause deadhesion may be likened to the fracture energy in the fracture of bulk materials. Good adhesion is prompted by: (1) strong bonding in the interfacial region, (2) absence of high stresses, (3) absence of easy fracture modes, and (4) no long-term degradation modes. Each of these factors may be influenced by the materials involved, the deposition method used, the deposition parameters and the service/test conditions. This paper will review a number of factors which determine the adhesion of film-substrate systems and will attempt to outline some methods for resolving adhesion problems.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6303273
• Report Number(s): SAND-81-0590C; CONF-811029-1; ON: DE81028415
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ADHESIVES
DUCTILITY
FAILURES
FILMS
FRACTURES
MECHANICAL PROPERTIES
PERFORMANCE TESTING
TENSILE PROPERTIES
TESTING