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Presley Ann/Getty Actor Billy Crystal might be known forever to many as Harry from the 1989 film When Harry Met Sally, but to Jennifer Crystal Foley and Lindsay Crystal, he’s always been Dad.

The sintering temperature increased from room temperature to 1250°C at a rate of 3°C/min, and kept it for 4 h, so that the crystal grains could grow sufficiently. Finally, the sintered body was cooled ...