Background of Experiment
□ Al-Si Alloy
AI + Si = Al-Si Alloy
1. Low melting point
2. light
3. Large heat capacity
4. Insoluble to each other
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Result and Analysis - EDS
□ Composition Analysis
Al, Si is almost insoluble to each other at rsoom temperature.
All solid phase will have either 100% Al phase or 100% Si phase.
Reliability of Solder Ball
Surface finish
Multiple Reflow
Distribution of stress at shear point
→ Shear Height ↑ = Contact Height ↑
→ Same Energy, Broaden Stress -> Stress per area decrease
stress in the film
Fig. 1. The XRD patterns for the film in as-grown state
and sputtered at different powers.
has been released [16]. At the point, four other new peaks can be observed at 2θ = 12.398, 24.978, 27.288, and 33.268, which correspond to the diffraction peaks of Zn2GeO4 (1 1 0), Zn2GeO4 (2 2 0), Ge (1 1 1) and GeO, respectively. It is evident that the structural properties of
Bonding Test를 실시하여 Sn-Pb Solder와 Pb-Free Solder 간의 차이를 확인하고 Pb-Free Solder중에서도 각 재료마다의 Mechanical Bonding Test를 실시하여 Bonding Force를 체크한다. 보통 Soldering 된 제품이 받는 Stress 는 Tensile Stress 보다는 Shear Stress 가 주요하기 때문에 Solder 선택 시에는 Solder의 Tensile Property 보다는 Shear Pr
Synthesis
Grafting onto
“Grafting-onto” involves the chemical reaction preformed, functionalized polymers with surfaces containing complementary functional groups
Grafting from
‘‘Grafting-from’’ involves an in situ polymerization of an initiator functionalized surface with monomer.
Grafting onto
“Grafting-onto” involves the chemical reaction preformed, functionalized p