高クロム鋳鉄溶浸超硬合金の諸性質

概要

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A high chromium cast iron (Fe-15Cr-3.66C) was applied as an infiltrant to WC-Ni skeletons because of its high hardness and high wear resistance, and some properties of iron-chromium-carbon alloy infiltrated WC-Ni skeletons were investigated. The results of this work can be summarized as follows: (1) The uniform and hard alloys were obtained easily by means of the double direction infiltration process. (2) Wear resistance of this alloy was better than that of the nickel-phosphorus alloy infiltrated WC-Co skeleton, and almost the same as that of the sintered WC-18Co alloy. (3) Corrosion resistance of this alloy against some acids was almost the same as that of the sintered WC-9Co alloy. These improved properties will be caused by both a chromium-iron double carbide (K2 type) and chromium dissolved in the binder of this alloy.
社団法人粉体粉末冶金協会の論文