XXII.An X-ray investigation of the gold-rhodium and silver-rhodium alloys

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Abstract
The gold-rhodium system was found to be one of two solid solutions. The gold lattice contracted a maximum of 0·011 Å., which, according to Vegard's law, indicates a solubility of 4·1 atomic per cent of rhodium in gold. Limiting spectra and consideration of Westgren's and Almin's findings indicated that a better value for this solubility would be nearer to 8 than to 4 atomic per cent. The edge of the unit cell of rhodium expanded as much as ·003 Å. Similar considerations would indicate the solubility of gold in rhodium to be between 1·1 and 2·5 atomic per cent., with the possibility of its being nearer 1·5 atomic per cent.

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