학술논문

Properties and applications of molybdenum
Document Type
Conference
Author
Source
Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States); STP-849; Conference: ASTM Committee B-10 on reactive and refractory metals and alloys, New Orleans, LA, USA, 23 Sep 1982
Subject
36 MATERIALS SCIENCE MOLYBDENUM
CHEMICAL PROPERTIES
MECHANICAL PROPERTIES
PHYSICAL PROPERTIES
USES
MOLYBDENUM ALLOYS
REFRACTORY METALS
ALLOYS
ELEMENTS
METALS
TRANSITION ELEMENTS 360203* -- Ceramics, Cermets, & Refractories-- Mechanical Properties
360204 -- Ceramics, Cermets, & Refractories-- Physical Properties
Language
English
Abstract
Metallic Moly is consolidated into commercial products by the powder-metallurgy process (P/M) and by the consumable electrode vacuum-arc casting process (VAC). Moly's high melting point and low vapor pressure at extreme temperatures justify its applications to cold wall vacuum or inert atmosphere furnace equipment. These properties, as well as Moly's high thermal conductivity and good electrical and chemical properties, lead to applications in glass-making manufacture of fibers and containers. Moly is also widely used in electronics, solid-state devices, X-ray tubes, crystal growing, heat pipes, photoetched masks, etc. TZM Moly Alloy is the best commercial high strength, high temperature material for hot-work tool applications such as die casting (even ferrous metals), hot extrusion (nonferrous and ferrous metals), hot piercing stainless steel tubes, isothermal forging tools, isothermal shape rolling, hot gas valves and seals, and hot turbine components. The Moly-30% tungsten alloy (Mo-30W) is commercially employed for its high melting temperature of 2829/sup 0/C (5125/sup 0/F) and its chemical inertness in corrosive molten zinc, especially the high purity grades. Moly and Moly-base alloys are commercially used for principally high temperature applications in hot equipment, hot working tools, and hot operating machines.