【摘要】 对高碳钢(碳的质量分数为1%)的凝胶注模成形工艺进行了研究.采用该工艺制得质量分数为89%的注模性能良好的料浆,并用此料浆制备出复杂形状的高碳钢制品.研究了烧结气氛对碳含量的影响.结果表明:真空气氛烧结可以得到理想的含碳量;在分解氨气氛垫付石墨1200℃对坯体进行烧结,可得相对密度91%,抗弯强度400MPa,抗拉强度410MPa,组织均匀且形状复杂的高碳钢制品.更多还原

【Abstract】 Gelcasting was applied to the preparation of high carbon steel products with 1% carbon in mass fraction. The iron-carbon suspension with 89% solid loading was prepared in gelcasting and a lot of parts with complex shapes were produced with this suspension. The effect of sintering atmosphere on the carbon content of products was investigated. It is shown that sintering in vacuum can control the carbon content. The products with uniform structure, a relative density of 91%, flexural strength of 400?MPa, and tensile strength of 410?MPa can be prepared after sintering at 1?200?℃ under dissociated ammonia.更多还原