The results show that the nitridingdepth was determined accurately by the carbon concentration profiles.
结果表明：由渗氮试样的碳浓度分布曲线可精确确定渗氮层深。
2
The results show that the hardening depth of steel by composite treatment is much larger than that of single treatment of ion nitriding.
结果证明：复合处理的淬硬层深度大于非氮化激光处理的硬化层。
3
The results of experiments showed that the Nb can raise the depth of diffusion zone, hardness, wear resistance, strength and toughness of the nitriding layer of the matrix steel.