Melting points of firebricks and clays

• Publisher: Elsevier Science
• Year: 1913
• Tongue: English
• Weight: 54 KB
• Volume: 175
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(13)90911-x

✦ Synopsis

203

Copper Alloy Resistant to Acids. ROBERT GRIMSHAW. (The Metal Industry, x, 12, 498.)--An alloy of 4o per cent. cobalt and 6o per cent. tin is especially resistant to acids, even to concentrated nitric acid and to this acid mixed with chlorides. It is, however, so brittle as to be unworkable, and is therefore practically worthless. If, however, this alloy is dissolved in copper, so as to form a new alloy of 80 to 95 per cent. copper and 20 to 5 per cent. of the cobalt and tin, a series of alloys is obtained which may be filed, bored, turned, forged, etc., and also have a high degree of chemical resistance. It has been found preferable to make the cobalt-tin alloy first and then dissolve that in the copper.