Moreover, re elements can fine the structure of the layer, improve precipitating carbonous chromium nitride formed and increase the hardness of the layer.
而且稀土元素显著地细化渗层组织，促进氮碳化合物弥散细小析出，提高渗层硬度。
The application and preparation of ultra-fine chromium nitride powders are presented. Specially, the progress in preparation technique is reviewed. with evaluation and directions for further study.
综述了超细氮化铬粉体的用途、制备方法，着重介绍了近年来超细氮化铬粉体的制备方法的研究进展，分析了各种方法的利弊以及以后的研究方向。
The application and preparation of ultra-fine chromium nitride powders are presented. Specially, the progress in preparation technique is reviewed. with evaluation and directions for further study.
综述了超细氮化铬粉体的用途、制备方法，着重介绍了近年来超细氮化铬粉体的制备方法的研究进展，分析了各种方法的利弊以及以后的研究方向。
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