Rare-earth Iron Silicide Alloy GB/T4137-1993
Rare-earth iron silicide alloy (REIS) is an intermetallic compound developed by rare-earth and iron elements, which is a new “super-hard” material combining the excellent properties of “hardness”, “heat resistance”, “corrosion resistance” and “wear resistance”. It is characterized by high hardness, excellent toughness, and temperature resistance and other characteristics. Besides, has good abrasion resistance and high temperature strength, whats more, also has good compatibility with other materials, etc.
Rare-earth iron silicide alloy is an important alloy material developed in recent years, which extensively applies in aerospace, aviation, communication industries and mining industries. In terms of its application, REIS has been used for various large-scale industrial fields, such as the manufacturing of various measuring instruments, injection molding dies, small bearings and other parts formed by pressing. Moreover, it is also widely applied in the manufacturing of hardware tools and mining machinery, such as mining tools, mining machinery drags and other wear parts, etc. The manufacturing with the new material of REIS has effectively improve the performance of modern equipments, which plays a major role in the development of China’s industrial production.
Due to the excellent mechanical performance, wear resistance and surface hardness, REIS has a broad application prospect. REIS alloy refers to a category of alloy materials, which is between metal and non-metal, with relatively low total element content. The main components of REIS metal alloys are rare-earth, iron, silicide and various elements. Its performance is similar to alloy steel, and its composition, microstructure and properties still depend on the type and content of impurities and rare-earth species.
REIS alloy is the developed material with superior hardening performance, and the combination of excellent hardness, toughness and temperature resistance with high wear resistance and fatigue strength make it an outstanding alloy material. At present, the comprehensive performance evaluation criteria of REIS alloy mainly include: surface hardness, working temperature, fatigue strength, corrosion resistance, etc. It is generally believed that the higher the content of rare earth in the alloy, the better the comprehensive performance.
REIS alloy has superior high temperature resistance, thermal fatigue and scratch resistance, which has the highest temperature of up to 800 °C, working temperature of 450-650°C, and thermal fatigue resistance of 120-150°C. Furthermore, its better surface wear resistance and low surface friction coefficient make it play an important role in lubrication. In addition, REIS has excellent corrosion resistance in air, salt water, steam environment. Its corrosion resistance mainly comes from its special metallurgical structure and the passivation effect of the surface film.
In a word, REIS alloy is a new type of high-performance alloy newly developed in the past few decades, which has superior comprehensive performance and widely application prospect. REIS alloy has superior wear resistance, fatigue strength and corrosion resistance, which makes it an ideal material for various measurement instruments, injection molding dies and small bearings. Every part formed has higher hardness and better performance. In addition, its excellent high temperature resistance also makes it widely used in various hardware tools and mining machinery. Moreover, its superior performance also has a good effect on the development of modern industrial production.
