Results 161 to 170 of about 2,059,101 (215)
Some of the next articles are maybe not open access.
2008
So-called ferroelectric materials may be divided into two classes: ferroelectrics and relaxors (Table 30.1) [1].
Simon, Annie, Ravez, Jean
openaire +2 more sources
So-called ferroelectric materials may be divided into two classes: ferroelectrics and relaxors (Table 30.1) [1].
Simon, Annie, Ravez, Jean
openaire +2 more sources
Soldering & Surface Mount Technology, 1998
In recent years, efforts to develop alternatives to lead‐based solders have increased dramatically. These efforts began as a response to potential legislation and regulations restricting lead usage in the electronics industry. Lead is extremely toxic when inhaled or ingested. As researchers began to focus on Pb‐free solders, they recognized their value
Anton Zoran Miric, Angela Grusd
openaire +1 more source
In recent years, efforts to develop alternatives to lead‐based solders have increased dramatically. These efforts began as a response to potential legislation and regulations restricting lead usage in the electronics industry. Lead is extremely toxic when inhaled or ingested. As researchers began to focus on Pb‐free solders, they recognized their value
Anton Zoran Miric, Angela Grusd
openaire +1 more source
Lead-Free Piezoelectric Transducers
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency ControlResearch activities on lead-free piezoelectric materials have been ongoing for over 20 years. Generally, the applicability of the main material families is less universal than that of lead-based compositions such as lead zirconate titanate, but in some cases, the corresponding applications have already been identified. Due to the extensive research, it
Ringgaard, Erling +4 more
openaire +2 more sources
Science, 2014
Chemistry![Figure][1] CREDIT: REN-GEN XIONG Ferroelectric materials have a permanent electric dipole moment that can be switched by the application of an external electric field, a property that makes them widely used in sensing, memory, and actuators.
openaire +1 more source
Chemistry![Figure][1] CREDIT: REN-GEN XIONG Ferroelectric materials have a permanent electric dipole moment that can be switched by the application of an external electric field, a property that makes them widely used in sensing, memory, and actuators.
openaire +1 more source
Lead-free Flux Effect in Lead-free Solder Joint Improvement
2006 Thirty-First IEEE/CPMT International Electronics Manufacturing Technology Symposium, 2006Lead-free flux used in lead-free solder ball attachment process has been found to play a vital role in improving lead-free solder joint robustness & performance. In this study, two water soluble lead-free solder ball attach fluxes, flux A & flux B, each from different supplier, were compared in terms of the following characteristics: time variation of ...
Eu Poh Leng +4 more
openaire +1 more source
Lead-free acoustic emission sensors
Review of Scientific Instruments, 2007Acoustic emission (AE) sensors have been fabricated using both soft- and hard-type lead-free (Na0.5K0.5)NbO3-based ceramics. The acoustic and electromechanical properties of the ceramics have been determined using the resonance technique. The lead-free AE sensors were calibrated using a laser source and compared to a commercial sensor. A lead zirconate
Lam, KH, Lin, DM, Chan, HLW
openaire +3 more sources
Lead-free multilayer piezoelectric transformer
Review of Scientific Instruments, 2007In this article, a multilayer piezoelectric transformer based on lead-free Mn-doped 0.94(Bi1∕2Na1∕2)TiO3–0.06BaTiO3 ceramics is presented. This piezoelectric transformer, with a multilayered construction in the thickness direction, is 8.3mm long, 8.3mm wide, and 2.3mm thick. It operates in the second thickness extensional vibration mode.
Guo, M +6 more
openaire +3 more sources
Interfacial Reaction of Lead-Free Solders with Lead-Free Finished Leadframes
2006 International Conference on Electronic Materials and Packaging, 2006Due to the implementation of the legislations to restrict the use of environmental unfriendly materials, the use of lead (Pb) in electronic products is banned. This includes the use of surface finishing materials such as that for integrated circuit (IC) leadframes.
Y. W. Wong +4 more
openaire +1 more source
Prevailing Lead-Free Materials
2020Lead-containing solders, particularly tin-lead solders, have been widely used in electronics industry for a long time. This is primarily due to a combined merit of low cost, good soldering properties, adequate melting temperature range, and proper physical, mechanical, metallurgical, and fatigue resistance properties.
John H. Lau, Ning-Cheng Lee
openaire +1 more source
Journal of Electronic Materials, 1994
Two specific examples of the new lead-free alloys are described. In the Sn-3.5%Ag-l%Zn alloy (m.p.~217°C), the eutectic precipitate morphology is refined by the relatively small amount of zinc addition and as a result, a high-strength, high-ductility solder with significantly improved creep resistance is obtained.
M. McCormack, S. Jin
openaire +1 more source
Two specific examples of the new lead-free alloys are described. In the Sn-3.5%Ag-l%Zn alloy (m.p.~217°C), the eutectic precipitate morphology is refined by the relatively small amount of zinc addition and as a result, a high-strength, high-ductility solder with significantly improved creep resistance is obtained.
M. McCormack, S. Jin
openaire +1 more source