【摘要】 以WC ,NiAl,NiB和Ni粉末等混合球磨、烧结制备复合材料焊条 ,在球磨过程中 ,WC颗粒被破碎 ,NiAl,NiB和Ni反应生成金属间化合物Ni3 Al。用氩弧焊将这种复合材料焊条堆焊在 1Cr2 5Ni2 0Si2不锈钢的表面 ,形成 5mm厚的金属间化合物耐磨复合材料。堆焊过程中 ,部分WC溶解 ,析出新碳化物W2 C ,Ni3 Al转变成新金属间化合物Ni3(AlTi)C。这种复合材料的耐磨性可达 4 5钢的 3倍以上。更多还原

【Abstract】 Composite welding rods were fabricated by milling and sintering mixtures of WC,NiAl,NiB and Ni powders.In milling,WC particles were broken,and NiAl,NiB and Ni powders reacted to form intermetallic compounds.WC/intermeatllic composite wear resistant coatings (5mm in thickness) were made using this kind of welding rods on the surfaces of 1Cr25Ni20Si2 steel.Partial WC particles dissolved to precipitate new carbide W 2C,and the matrix Ni 3Al transformed one new intermetallic compound Ni 3(AlTi)C.The wear resistance of this composites was 3 times that of 45 steel.更多还原