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一、前言为寻求新一代耐磨堆焊材料,人们已把注意力转向碳化物和陶瓷材料。TiC基耐磨材料具有高于WC硬度(MH3200kg/mm~2),熔点达3200℃,低密度(4.92g/cm~3),过热后晶粒长大倾向小,磨擦系数小,价格低于WC等一系列优点。然而,作为堆焊材料需要克服一系列困难:如易氧化、易上浮、熔敷速率低、高温易溶解、合金脆性
First, the foreword To seek a new generation of wear-resistant surfacing materials, people have turned their attention to carbide and ceramic materials. TiC-based wear-resistant material has a hardness higher than WC (MH3200kg / mm ~ 2), melting point of 3200 ℃, low density (4.92g / cm ~ 3), overheating grain growth tendency of small friction coefficient, WC and a series of advantages. However, as a welding material to overcome a series of difficulties: such as easy oxidation, easy to float, deposition rate is low, high temperature easily soluble, brittle