News

News

Laser Welding Ceramics Technique Promises Stronger Electronics

Date: 2019-09-11
Views: 258

Laser Welding Ceramics Technique Promises Stronger Electronics


Engineers at the University of California, San Diego have developed a process for welding ceramics that could have wide-ranging implications for the hardiness and construction of electronics.

According to a paper published in Science on August 23rd,, UC-San Diego researchers have used a sub-50-watt, rapidly-pulsing laser to melt and fuse ceramics, upending traditional ceramics welding methods by dramatically lowering the temperature at which the material binds.

Traditionally, ceramics have been difficult to weld because they require immense amounts of heat to make them malleable enough to fuse. While heating ceramics to these temperatures isn’t difficult, cooling them uniformly has been challenging—if a ceramic material cools in uneven conditions, it’s susceptible to cracking, splitting and other types of catastrophic states of being.

To make their new systems for ceramic welding work, engineers optimized two aspects of the laser welding process: the laser parameters (a.k.a. the laser exposure time, the number of laser pulses, and the duration of each laser pulse) and the transparency of the target ceramic material.

“The sweet spot of ultrafast pulses was two picoseconds at the high repetition rate of one megahertz, along with a moderate total number of pulses. This maximized the melt diameter, minimized material ablation, and timed cooling just right for the best weld possible,” said Guillermo Aguilar, chair of mechanical engineering at UC Riverside.

Javier E. Garay, a professor of mechanical engineering at UC San Diego, added, “By focusing the energy right where we want it, we avoid setting up temperature gradients throughout the ceramic, so we can encase temperature-sensitive materials without damaging them.”

Given the fact that there are new ceramic materials that are both very hard and shatter-resistant, a new welding technology that can guarantee the material consistency of ceramics post-manufacture could lead to breakthrough medical devices as well as consumer electronics.

Although the ceramic laser welding process has only been tested on small samples within a lab setting, researchers are optimistic that they will be able to scale their process with relative ease. If that prediction does become reality, then many of the fragile consumer electronics that we gingerly tote about day by day could be in for a much more rough-and-tumble existence in the near future.


Via: https://www.engineering.com

News / Recommended news More
2020 - 03 - 06
The global electroceramics market was valued at $8,590.9 million in 2017 and is projected to reach $12,084.4 million by 2023, demonstrating a CAGR of 5.9% during the forecast period. This is due to high consumption of these ceramics in manufacturing of electronic and automotive components and devices, electrical systems, medical sensors and implants. As the global economy is witnessing a mass...
2020 - 02 - 27
The dense microstructure of barium titanate as seen under a microscope. Credit: Pennsylvania State UniversityBarium titanate is an important electroceramic material used in trillions of capacitors each year and found in most electronics. Penn State researchers have produced the material at record low temperatures, and the discovery could lead to more energy efficient manufacturing.A team of Penn S...
2020 - 02 - 20
President, Sri Lanka Ceramics and Glass Council, Anura WarnakulasooriyaThe ceramics industry uses a lot of energy in terms of LP gas, furnace oil, kerosene and electricity. High energy prices in Sri Lanka increases the cost of production and the industry constantly struggles to maintain competitive prices against competing countries, President, Sri Lanka Ceramics and Glass Council (SLCGC), Anura W...
Share:
Uniris Exhibition Shanghai Co., Ltd.
Shanghai Branch
Tel: 4000 778 909 
E-mail:irisexpo@163.com

Guangzhou Branch
Tel: 020-8327 6389
E-mail:iacechina@unifair.com

IACE CHINA Official Website
犀牛云提供企业云服务
犀牛云提供云计算服务
Scan