In celebration of the 150th birthday of Josiah Willard Gibbs, who was born in 1839, the Gibbs Triangle Award was established in 1989. It will be awarded once every third to fifth year for outstanding contributions to studies of ternary and higher-order phase diagrams, their thermodynamic background and principles of construction as well as methods of calculation and assessment work. The name of the award has been taken from Gibbs composition triangle, commonly used in representing ternary phase diagrams. The recipient will be chosen by the associate editors of the CALPHAD journal together with prior recipients. The award is in the form of a musical triangle and its ByLaw.
Ursula Kattner of the NIST Material Measurement Laboratory Materials Science and Engineering Division is the 2023 recipient of the Gibbs Triangle Award at the 50th CALPHAD meeting held in Boston, MA, June 25-29, 2023. This is awarded for outstanding contributions to development of ternary and higher-order phase diagrams and in honor of J.W. Gibbs.