| 摘要 |
<p>1,155,563. Pt alloys. JOHNSON, MATTHEY & CO. Ltd. June 16, 1966 [June 19, 1965], No. 26028/65. Heading C7A. A Pt-Rh-Au alloy suitable for use with molten glass has a composition within the area ABCDEFGHJA, the points havingthe co-ordinates:- Pt Rh Au A 97 2 1 B 88 2 10 C 85 5 10 D 90 5 5 E 86 10 4 F 81 15 4 G 75 15 10 H 65 25 10 J 74 25 1 Pt and Rh in sponge form and Au in grain form may be melted together and then chill cast, into an ingot. The ingot is homogenized at 1250‹C. for 64 hours, slow cooled to 800‹C., held for 16 hours and quenched.</p> |
