We studied the effect of suppress pressure, sinter temperature and sinter times on density, hardness and structure of the materials in the course of preparation.
并对制备过程中的压制压力、烧结温度和烧结时间等工艺参数对材料密度、硬度和组织的影响进行了研究。
The increasing pressure leads to the drop in hardness.
随着压力的增加，材料的硬度下降。
With increasing of nitrogen pressure, the cooling capacity of nitrogen, the cooling velocity and hardness of the workpieces after quenching are improved.
随着氮气压力的提高，气体的冷却能力、工件的冷却速度、工件淬火后的硬度等都得到了不同程度的提高。
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