Question on bond strength.
Using Aluminum Oxide powders we had good bond strength with 24 grit and 60 grit surface preps. (4500 PSI)
Now we are trying the Pure aluminum powders and are running into much lower bond strengths especially with the 60 grit prep. 24 grit (2800 PSI) 60 grit (900 PSI)
What parameter changes might make a difference in pulling up these bond strengths to be closer to the aluminum oxide powders?
BOND TEST PROPERTIES
1 - 60 grit abrasive, Al/Al2Ol3 (A) 3,865 Coating Failure
1 - 60 grit abrasive, Al/Al2Ol3 (B) 4,219 Coating Failure
1 - 60 grit abrasive, Al/Al2Ol3 © 2,233 Coating Failure
1 - 60 grit abrasive, Al/Al2Ol3 (0) 3,439
2 - 24 grit abrasive, Al/Al2Ol3 (A) 3,860 Coating Failure
2 - 24 grit abrasive, Al/Al2Ol3 (B) 3,408 Coating Failure
2 - 24 grit abrasive, Al/Al2Ol3 © 2,642 Coating Failure
2 - 24 grit abrasive, Al/Al2Ol3 (0) 3,303
3 - 60 grit abrasive, Pure Aluminum (A) 955 Coating Failure
3 - 60 grit abrasive, Pure Aluminum (B) 1,048 Coating Failure
3 - 60 grit abrasive, Pure Aluminum © 1,339 Coating Failure
3 - 60 grit abrasive, Pure Aluminum (0) 1,114
4 - 24 grit abrasive, Pure Aluminum (A) 4,384 Coating Failure
4 - 24 grit abrasive, Pure Aluminum (B) 1,728 Coating Failure
4 - 24 grit abrasive, Pure Aluminum © 3,166 Coating Failure
4 - 24 grit abrasive, Pure Aluminum (0) 3,093
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