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.

实验结果表明，铌能增加扩散层深度、硬度及耐磨性，提高渗层的强韧性。

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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.

实验结果表明，铌能增加扩散层深度、硬度及耐磨性，提高渗层的强韧性。

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