| 摘要 |
1,197,757. Coating with metals. TEXAS INSTRUMENTS Inc. July 28, 1967 [Sept. 16, 1966], No.34826/67. Heading C7F. A heated substrate of e.g. Fe, Ta, Mo, Nb or W is coated with a Cr-Ti alloy by simultaneously directing a gaseous or liquid mixture of chromium and titanium halides into hydrogen either close to or at the surface of the substrate. Titanium tetrachloride and argon or helium is fed through chambers 8, 9 containing Ti and Cr to form titanium trichloride and chromium dichloride, and hydrogen is fed through a pipe 3 to mix with the chlorides close to the substrate 4. In a modification Fig. 2 (not shown) a single chamber containing both Ti and Cr is used. When coating Fe the hydrogen may be diffused through the Fe, e.g. from one side of a tube to the other Fig.4 (not shown). A hydrogen permeable sheet may be coated Fig. 5 (not shown) using the metal halides in solution in a fused salt. |
