| 摘要 |
<p>A method for forming a carbide layer of a V-a group element V, Nb or TA of the periodic table on the surface of an iron, ferrous alloy or cemented carbide article in a treating molten bath, comprising heating a mixture of boric acid or a borate and a chloride of said V-a group element of the periodic table to its fusing state and immersing the article in the treating molten bath of said mixture, thereby forming a very hard carbide layer of said V-a group element on the surface of said article. The method of this invention can be carried out without ageing the treating bath and can form a very smooth carbide layer on the surface of the article.</p> |
