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前言抗磁不锈钢又称低磁不锈钢,是不锈钢发展中的一个新类型,即要求钢除有一定的机械性能和耐腐蚀性外,还特别要求钢有足够低的导磁率。近年来,随着自动控制系统的精密仪表、航空、电视和电气工业等方面的需要,国内外部曾对抗磁不锈钢开展了一些研制工作。一、抗磁不锈钢中的合金元素奥氏体组织的钢是属于低导磁率的。但是,奥氏钢的磁性也是随着成分、组织状态而变化。铬在不锈钢中能显著改善钢的抗腐蚀能力,铬具有特别高的钝化倾向性,只有象氯离子这样的消钝化剂,才能破坏它的钝化作用。在氧化介质中,必须含有高于16%的铬,才能保
Preface Magnetic anti-magnetic stainless steel, also known as low magnetic stainless steel, is a new type of stainless steel development that requires steel in addition to a certain degree of mechanical properties and corrosion resistance, but also specifically required steel has low enough permeability. In recent years, along with the needs of precision instrumentation, aviation, television and electrical industry of automatic control systems, some domestic and foreign anti-magnetic stainless steels have carried out some research and development work. First, the anti-magnetic stainless steel alloy elements Austenitic steel is a low permeability. However, the austenitic steel also changes with composition and microstructure. Chromium can significantly improve the corrosion resistance of steel in stainless steel. Chromium has a particularly high passivation tendency. Only a passivating agent such as chloride ion can destroy its passivation. In the oxidizing medium, must contain more than 16% of chromium, to protect