Using　X-ray　diffraction　(XRD),　scanning　electron　microscope　(SEM)　and　transmission　electron　microscope　(TEM)　to　describe　the　relationship　between　Mo　content　and　the　amorphous　content　in　deposites　from　the　effects　of　the　molybdate　concentration　on　microstructure,　phase　content　and　morphology　of　the　deposits.　It　is　found　when　the　Mo　content　is　low　to　18at.%,　the　deposits　are　composed　of　nanocrystalline　main　phases　and　the　grain　size　is　below　10nm　with　tiny　particle　at　the　basement　surface.　When　Mo　in　18∼33at.%,　the　deposits　are　composed　of　amorphous　phase　up　to　more　than　60wt.%　proportion,　and　the　grain　size　of　the　nanocrystalline　existing　in　the　deposits　is　stability　of　3∼10nm　with　tiny　particle　and　well-distribution　of　the　basement　surface.　When　Mo　content　is　exceeding　33at.%,　the　deposits　performance　is　of　the　crystalline　properties　with　more　crystal　defects　in　the　coating.　©　2011　Trans　Tech　Publications,　Switzerland.