Preparation of stainless steel powder containing nitrogen by mechanical alloying technique
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摘要: 采用機械合金化法(MA)分別在N2氣氛和氨水介質中利用高能球磨進行了含氮不銹鋼粉末的制備,探討了MA法對含氮不銹鋼粉末性能的影響.結果表明,隨球磨時間延長,粉末含氮量升高,接近高氮不銹鋼氮含量,且顆粒不斷細化,球磨10h的粉末粒度可達到1.878μm.Abstract: The mechanical alloying (MA) technique was used to prepare stainless steel powders containing nitrogen by high energy ball milling under N2 atmosphere and NH3·H2O medium. The effect of MA technique on the property of the powders was investigated. The results showed that the nitrogen content in the powder increased and the powder size decreased with increasing milling time. The nitrogen content in the powder was close to that in high nitrogen stainless steel. The powder size was close to 1.878 μm when milling was carried out for 10 h.
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Key words:
- stainless steel /
- mechanical alloying /
- nitrogen concentration /
- high energy ball milling
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