SMT, PCB Electronics Industry News

Nihon Superior’s Keith Sweatman to Present at TMS 2011

Mar 01, 2011

Keith Sweatman, Senior Technical Advisor at Nihon Superior Co., Ltd.

Keith Sweatman, Senior Technical Advisor at Nihon Superior Co., Ltd.

Nihon Superior Co. Ltd., a supplier of advanced soldering materials to the global market, announces that Keith Sweatman, Senior Technical Advisor, will present a paper titled "The Stability Window and Mechanical Properties of the Interfacial Intermetallic in Lead-free Solder Joints" at the upcoming TMS 2011 Annual Meeting & Exhibition. The presentation will take place Thursday, March 3, 2011 from 9:15-9:45 a.m. at the San Diego Convention Center in San Diego, CA.

The trend to copper UBM for lead-free area-array packages subjected to drop impact means that the properties of the intermetallic that forms at the solder/copper interface are major determinants of joint reliability. The transformation of the Cu6Sn5 from the close packed hexagonal η to the monoclinic η' at 186°C can reduce the impact resistance and long-term reliability of the solder joint.

In this presentation, the authors report new studies on the effect of Ni over the range 0-9 percent on the stabilization of the η phase. The distribution of Ni in the Cu6Sn5 and its crystal structure, lattice dimensions and thermal stability have been studied using SEM/EDS, TEM/EDS, synchrotron micro-XRF mapping techniques, synchrotron XRD, DSC and dilatometry. The mechanical properties of the intermetallic as a function of nickel content have been measured by nanoindentation. The data collected provides a basis for lead-free alloy formulation for area-array attachment.


Nihon Superior was founded in 1966 when it began marketing unique flux products imported from the US. The company made its mark on society by gathering the most advanced soldering and brazing technologies and products from around the world, and supplying them to companies in the metal-joining industry. A turning point for the company came when it started developing its own soldering materials and with the success of its unique SN100C lead-free solder alloy Nihon Superior has become a major player in the global market. To support the growing demand for its products Nihon Superior has established manufacturing and sales centers in Japan, China and other Asian countries and formed business partnerships with companies in other markets.

Jan 03, 2022 -

Nihon Superior to Highlight TempSave Soldering Materials at IPC APEX

Oct 07, 2021 -

Nihon Superior to Highlight TempSave Soldering Materials and SN100CV P608 Paste at SMTAI

Feb 08, 2021 -

Nihon Superior Receives Honorable Mention in SMTA International Best Paper Awards

Jan 06, 2021 -

Nihon Superior Commemorates 55 Years of Innovation in Soldering Materials

Dec 04, 2020 -

Nihon Superior's Senior Technical Advisor will participate in Low Temperature Solder Panel Discussion

Feb 06, 2020 -

Nihon Superior Receives NPI Award for New TipSave N Flux-Cored Solder Wire

Feb 06, 2020 -

Nihon Superior Wins 2020 IPC APEX EXPO Innovation Award for New Flux-Cored Solder Wire

Jan 06, 2020 -

Nihon Superior to Exhibit TipSave N at APEX 2020

Oct 29, 2019 -

Nihon Superior extends soldering iron tip life by 3X with new TipSave N flux-cored solder wire

Aug 21, 2019 -

SN100C Celebrates 20 Years of Reliability Service

143 more news from Nihon Superior Co., Ltd. »

Jul 06, 2022 -

Offline PCBA Cleaning Machine HJS-7100,rosin flux, non-clean flux,water-soluble flux cleaning machine

Jul 05, 2022 -

Semiconductor Spray Cleaning Machine HJS-9700,Semiconductor Wafer Cleaning Machine HJS-9700

Jul 04, 2022 -

Pneumatic Stencil Cleaner HJS-9000II,dual chamber stencil cleaning machine

Jul 03, 2022 -

Electric Stencil Cleaner HJS-9500, SMT Electric Stencil Cleaner HJS-9500

Jul 01, 2022 -

Screen Cleaning Machine HJS-4600, SMT Screen Cleaning Machine HJS-4600

Jun 30, 2022 -

Electric Fixture Cleaning Machine HJS-6700, SMT pallet cleaning machine, soldering pallet cleaning machine

Jun 29, 2022 -

Waste Water Treatment Machine RWT-1000, SMT Waste Water Treatment Machine RWT-1000

Jun 28, 2022 -

Gen3's Dr Chris Hunt, CTO submits an insightful paper to the journal of Surface Mount Technology

Jun 28, 2022 -

Squeegee Cleaning Machine HJS-3700,SMT Squeegee Cleaning Machine HJS-3700

Jun 27, 2022 -

Solderstar Celebrates 20 Years of Innovation

See electronics manufacturing industry news »

Nihon Superior’s Keith Sweatman to Present at TMS 2011 news release has been viewed 664 times

best reflow oven

IPC Certification Training Schedule