By spreading stresses throughout the chip and PCB interface with a mechanical bond
, less stress is concentrated on the solder joints, increasing device reliability.
"Ultrasonics creates a mechanical bond
rather than a chemical bond created by adhesives," says Dan Sorensen, director--Hygiene / Personal Care / Medical, Aurizon Ultrasonics.
Two types of bonds can form during multi-material metalcasting: a mechanical bond
and a metallurgical bond.
Sir Fraser, who received a Nobel Prize alongside his colleagues Jean-Pierre Sauvage and Bernard L Feringa for their work into the design and synthesis of molecular machines, presented a lecture entitled 'The Nature of the Mechanical Bond
: From Molecules to Machines' at the University's School of Chemistry.
A mechanical bond
is necessary--with details and holes in the part design--but some materials do not like to adhere to each other.
There are two types of adhesion that occur in coatings application: chemical bond and mechanical bond
. A mechanical bond
occurs as the result of sanding.
Since this initial report, various investigators have evaluated the technique to determine the factors that may effect the strength of the mechanical bond
including: the type of enamel conditioner, acid concentration, and length of etching time.
When the polymer cools and solidifies, it forms an extremely strong mechanical bond
, Westover said.
Creating a moisture-proof chemical and mechanical bond
between the cable jacket, connector, and flex relief, silicone overmolding provides a stronger bond to metal connector components than thermoplastic resins.
between concrete and steel is ensured by surface roughness of the strand (helical shape of the strand, indentations).
As the tool rotates it stirs the materials so that a mechanical bond
Edgebanding: laser-activated banding (zero-joint edge, mechanical bond
, temperature and moisture resistant), reduced throughput time, applications for lightweight panels and interior door production