Surface durability

AGMA 211.02, Surface Durability (Pitting) of Helical and Herringbone Gear Teeth, Washington, D.C., 1969. 

There is a frequent dememd for materials suitable for housings for computer, domestic, electrical and automotive equipment. In these applications toughness, excellent surface finish, surface durability, reasonable rigidity, dimensional stability, good weathering behaviour and low water absorption are common requirements. In these applications ABS is frequently considered first but its limited deflection temperature and heat aging resistance may lead to other... 

Silicon used for diffusion treatment of carbon steels enhances corrosion resistance to sulfuric acid. Such a treatment has the surface durability of iron/silicon alloys without their marked brittleness. 

D 3762 Test Method for Adhesive Bonded Surface Durability of Aluminum... 

However, the surface durability against impurities can be improved by modifying the surface configuration such as composition and stmcture. Chemical plating, alkaline treatment, and fluorination have been attempted as means to improve the hydrogen uptake capability, the electrochemical properties, and the durability. Among these treatments, a fluorination technique will be described in the latter part of this chapter in relation to the role and function of a Ni-enriched surface and a fluoride layer. 

ASTM D3762-79 (83). Adhesive-bonded Surface Durability of Aluminium (Wedge Test), Annual Book of Standards, 15.06, American Society for Testing and Materials, 1986. 

Marceau, J.A. et al. A wedge test for evaluating adhesive-bonded surface durability. Adhesives Age, October 1977, pp. 28-34. 

ASTM D3762-03 Standard test method for adhesive bonded surface durability of aluminum (wedge test). 

Adhesive Bonded Surface Durability of Aluminum (Wedge Test) (D 3762) Working Life of Liquid or Paste Adhesive by Consistency and Bond Strength, Test for (D 1338)... 

The history of airplane corrosion testing includes many successful tests that are now performed routinely, e.g., ASTM G 85 Annex A2 and ASTM G 44. Some other successful tests, such as the wedge test (ASTM D 3762, Test Method for Adhesive-Bonded Surface Durability of Aluminum), discovered as a result of bond line corrosion problems on airplanes, are not described here because they are not strictly corrosion tests. Many of the tests described here are ASTM standards. With others, standardization is being pursued, e.g., electrochemical impedance, or ANCIT (Aluminum-Nitrate Chloride Immersion Test), to replace EXCO [4], Corrosion may never be totally eliminated from an airplane however, further refinements in corrosion testing, made... 

Surface durability can also be tested under collisions with solid, liquid or gas phases. In these tests the surfaces are usually placed either horizontally or with a 45° tilt. The surface topography can be significantly altered by these collisions in a way that it is not functional anymore or the hydro-phobic component of the surface can be totally removed/destroyed. In this section we will present approaches to evaluate how sensitive is a liquid repellent surface to normal impacts and material removal. 

ASTM D 3762. (1981). Standard test method for adhesive-bonded surface durability of aluminum (wedge test), Part 22 wood adhesives. American Society for Testing and Materials, West Conshohoken, PA. 

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