TITANIUM-NIOBIUM ALLOY CAPABLE OF HIGHLY AIRTIGHTLY JOINING TO ALUMINA AND EXCELLENT IN DEGASSING PROPERTY

摘要

PURPOSE: To obtain a titanium-niobium alloy capable of highly airtightly joining to alumina and excellent in degassing property by specifying a composition consisting of Nb, Co, and Ti and properly controlling C, N, and O as impurities. ;CONSTITUTION: This alloy is a titanium-niobium alloy having a composition which consists of, by weight, 40-60% Nb, 0.5-4.0% Co, and the balance Ti with inevitable impurities and in which the amounts of C, N, and 0 as impurity elements are specified to ≤0.02%, ≤0.02%, and ≤0.06%, respectively. This alloy is capable of highly airtightly joining to alumina up to a temp. as high as about 800°C and excellent in degassing property and hot workability. If necessary, this alloy can further contain 0.02-1.0% of one or more platinum series metals among Pd, Pt, Rh, Ru, Re, and Os and/or 0.02-0.50% of one or more kinds among rare earth elements consisting of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Er, and Y.;COPYRIGHT: (C)1995,JPO