The excellent hard ferrite is prepared by the three kinds of the Dregs of sulfuric acid through physical and chemical treatment as well as oxidizingtreatment in lower temperature.
本文介绍用三种不同成分的硫酸渣，通过物理、化学和低温氧化处理，制成性能优良的永磁铁氧体。
2
QPQ technology is a surface treatment technology which consists essentially of liquid nitriding and liquid oxidizing.
Q PQ技术是一种主要包括盐浴渗氮和盐浴氧化的表面处理技术。
3
The influence of surface treatment such as oxidizing, grinding, pickling and blasting on the resistance to microbiologically influenced corrosion (MIC) of stainless steel SUS304 is studied.