Comments on "Room temperature interfacial reactions in electrodeposited Au/Sn couples"

Recently, Tang et al. (Acta Mater. 56 (2008) 5818) published a paper explaining room temperature growth of the phases in the Au/Sn system. In their analysis, they considered Au as the only mobile species for all the product phases, and Sn as virtually immobile. It is shown here that this analysis is not correct, since Sn has a higher diffusion rate through the AuSn4 phase. On the other hand, the mobilities of species in the AuSn2 phase are as yet unknown.

Paula Pohl Rieser nee Wagner and Max Rieser Portraits Couples

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Portrait of William and Charlotte Engel Levison Portraits Couples

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Studio portrait of the sister of Max Rieser with her husband Mr. Karpf; Krakow Portraits Couples

Max Rieser's sister and her husband died in a concentration camp in Poland during the Holocaust

Studio portrait of Joseph and Meta Gruenstein Portraits Couples

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Studio portrait of Max Gruenspecht and Regina Gruenspecht nee Epstein Portraits Couples

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Parents of Max Rieser standing on a terrace Portraits Couples

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Albert Einstein sailing with Margarete Lebach; Huntington Portraits; Couples

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Albert and Elsa Einstein seated on ship deck Portraits; Couples

Signed lower right Albert Einstein

Outdoor portrait of Ellen Bernkopf nee Catzenstein with her husband Hans Bernkopf; Paris, France. Portraits Couples

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Wedding portrait of Kurt Godshaw (Gottschalk) and Edith Godshaw nee Osterer; Quito, Ecuador. Portraits Couples

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Hans Krakauer and Elizabeth Krakauer nee Gottschalk; Boston, New York. Portraits Couples

Photograph taken in front of the house in Boston, in upstate New York outside of Buffalo, where in 1939 they set up their private medical practice. After WWII, they built a new house next door.

Wedding portrait of Hans Krakauer and Elizabeth Godshaw (Gottschalk); Hannover, Germany. Portraits Couples

In the apartment on Ruemkorffstrasse that the Gottschalks occupied after being forced to sell their house.