The hardness of the alloy following the change of time was analyzed by micro- hardness instrument and the alloy's hardness curve following the change of time was drawn.
用显微硬度仪测定合金的硬度，分析其硬度随氧化时间变化的情况，绘制该钢的显微硬度随时间变化的曲线。
2
A layer of ceramic film can be grown on ti alloy by the micro plasma oxidation.
在钛合金表面用微等离子体氧化能产生一层陶瓷膜。
3
It is considered that the V-N micro-alloy high carbon wire rods obtain the high strength and toughness mainly due to grain refining and precipitation strengthening.