TechNetters,
Can someone interpret this sentence for me?
"As Sn is anisotropic, the size and orientation of the grain structure
contributes to CTE mismatch fractures along the larger axis of a solder
joint, laterally rather than vertically."
I know the following:
1. Sn is anisotropic
2. the size and orientation of the grain structure contributes to CTE
mismatch fractures
Is the latter part (.along the larger axis of a solder joint, laterally
rather than vertically.) always true and if so, why? What am I missing?
Regards,
Bev