Abstract

The use of diffuse reflectance Fourier transform-infrared spectroscopy for the analysis of rosin flux residues on metal oxide powders, after exposure to high-temperature soldering conditions, is examined. The flux is shown to solvate some metal ions to form metal-carboxylate salt complexes. The ability of nonactivated rosin flux to remove possible corrosion products of copper-tin/lead solder joint areas is discussed.

Diffusion of metal ions from a substrate into oxide coatings

Yun Cui, Jiaoling Zhao, Yuanan Zhao, and Jianda Shao
Opt. Mater. Express 6(10) 3119-3126 (2016)

Optical scattering from oxidized metals. 2: Model verification for oxidized copper

Mikael Bergkvist, Arne Roos, Carl G. Ribbing, Jean M. Bennett, and Lars Mattsson
Appl. Opt. 28(18) 3902-3907 (1989)

Highly efficient in situ oxidization of metal ions in porous media with high power laser

Wenjun Zheng, Negar H. Golshan, Sue-Jonnathane Celestin, Katherine S. Ziemer, and Ming Su
Appl. Opt. 57(15) 4232-4236 (2018)

Diffuse reflectance and transmittance spectra of an interference layer. 2. Evaluation of tin oxide-coated glass

Daniel Rönnow and Arne Roos
Appl. Opt. 33(34) 7918-7927 (1994)

The Absolute Spectral Diffuse Reflectance of Magnesium Oxide*

W. E. Knowles Middleton and C. L. Sanders
J. Opt. Soc. Am. 41(6) 419-424 (1951)