| 摘要 |
PURPOSE:To offer the titled alloy capable of holding spectral reflectances differ ent partially at the same temp., by compsing said alloy of Ag as main constitu ent, and specified compsn. quantities of Zn, groups Ia, IIa, IVa-VIIa, VIII, Ib-Vb and rare earth element, etc. CONSTITUTION:The titled alloy is composed of alloy contg. Ag as main compo nent, 30-46wt% Zn, <=15% total of >=one kind among groups Ia, IIa, IVa, Va, VIa, VIIa, VIII, Ib-Vb. rare earth element. on a part of surface of alloy having different crystal structures at the first temp. higher than room temp. and the lower second temp. than the first temp. in solid state higher than room temp., crystal structure different from that at said second temp. is formed by rapid cooling from said first temp.. By this way, different spectral reflectances are provided to said rapidly cooled part and unrapidly cooled part, to obtain the titled alloy. |
