Aluminum bond strength

A wide variety of films and properties is available. Eap-shear aluminum-to-aluminum bond strengths range from 1,000 psi to over 3,000 psi and electrical properties are similar to those for the paste versions. Properties of film adhesives for die attachment and for substrate attachment are tabulated in Tables 3.16 and 3.17. 

Set times for aEyl esters are similar to those for ethyl esters, as are bond strengths to steel, aluminum, ABS, PS, and PC. 

Bond strength data for four multilayered materials is shown in Table V. In each case the data is for the bond between the food-contacting layer and its adjacent layer. In Pouch 1, it is the bond between ethylene-butene copolymer and aluminum foil in Pouch 2 between ethylene-butene copolymer—polyisobutylene blend and aluminum foil in Pouch 3 between ethylene-butene copolymer and polyiminocaproyl and in Pouch 4 between ethylene-butene copolymer and poly(ethylene terephthalate). Bond strength increased in the four multilayered materials after the irradiation treatment. 

Agreement with the electrostatic valence rule is satisfactory except for the oxygen atoms G (Fig. 4), common to only three oc-tahedra. It is seen, however, that these atoms occur in groups of four, which can be combined to tetra-hedra by placing aluminum ions in positions 4e, the total bond strengths then becoming 2 . The four chlorine ions occupy positions 4 c, 4 b being ruled out by the small Cl -0= distance it leads to (2.72 A, sum of radii 3.21 A). 

In addition, it should be possible to extend the range of compounds to include aluminum and indium. In principle, there are no compelling reasons why these analogues of the currently known gallium species should not exist. The aluminum compounds would be of particular interest as calculations on the neutral frans-bent HAlAlH model species indicate a bond strength of 10 kcal moP which is over three times higher than that calculated... 

Transition joints are used to join dissimilar metals where flanged, screwed, or threaded connections are not practical. They are used when fusion welding of two dissimilar metals forms interfaces that are deficient in mechanical strength and the ability to keep the system leak-tight. Transition joints consist of a bimetallic composite, a stainless steel, and a particular kind of aluminum bonded together by some proprietary process. Some of the types in use throughout the cryogenic industry are friction- or inertia-welded bond, roll-bonded joint, explosion-bonded joint, and braze-bonded joint. 

Whether the adhesive function is structural or protective, proper pretreatment of the aluminum prior to epoxy bonding remains essential for developing high bond strengths. (1-8)... 

Lin, C. J., and Bell, J. P., The Effect of Polymer Network Structure upon the Bond Strength of Epoxy- Aluminum Joints, Journal of Applied Polymer Science, vol. 16, 1972, p. 1721. 

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