Metallic material by nano-diamond Hot Dip treatment, the hardness and wear resistance in the end, what changes have occurred

Conventional chemical treatment methods such as carburizing , nitriding , carbonitriding , etc., using a carbon , nitrogen atoms penetration into the material , especially metal sub-surface , thus changing the surface hardness, wear resistance and other mechanical properties. Although such treatment methods with lower production costs , but there are some drawbacks , such as handling complex process,  polycrystalline diamond  high hardness and wear resistance is not improved after treatment material permeable layer shallow, generally only tens to hundreds of micrometers , and nitrided layer interfacial bonding force is small, easy to peel , etc. The diamond as the hardest material in nature , its hardness and wear resistance has been widely recognized, and nanodiamond osmosis treatment process easy and  synthetic diamond powder , equipment requirements are not very high, penetration depth can be more than 20mm, processed steel structure and performance have undergone great changes. metallic material by impregnation nanodiamond heat treatment, the hardness and wear resistance in the end , what changes have occurred is unclear . article two kinds of metal materials , respectively  grinding wheel  treatment, the comparative experiments , the main test by nano-diamond heat treated metal material impregnated with the hardness and wear resistance are improved than carburizing treatment and observation and analysis of its microstructure changes that have occurred . choose one of two experimental conditions and methods of experimental material .