(福州大學(xué) 材料科學(xué)與工程學(xué)院，福州 350002)
摘 要: 采用熔煉法制備出鎳-鐵-石墨-硅自潤滑材料，并研究了鐵含量對(duì)鎳-鐵-石墨-硅自潤滑材料的力學(xué)性能、干摩擦磨損性能及油潤滑摩擦磨損性能的影響。結(jié)果表明：隨著鐵含量的增加，合金中石墨量逐漸增多，自潤滑性能逐漸提高，材料的沖擊韌性和抗拉強(qiáng)度逐漸降低，硬度值先減小后增大；材料的干摩擦因數(shù)和油潤滑摩擦因數(shù)均隨著鐵含量的增加而逐漸降低，磨損率隨著硬度值的增大逐漸減小，其中Ni-60Fe-3.5C-1Si合金（質(zhì)量分?jǐn)?shù)，%）的摩擦因數(shù)最小，干摩擦因數(shù)和油潤滑摩擦因數(shù)分別保持在0.18和0.05。
關(guān)鍵字: 鎳-鐵-石墨-硅合金；自潤滑；熔煉法；摩擦磨損
its properties
（ School of Materials Science and Engineering，F(xiàn)uzhou University，
Fuzhou 350002，China）
Abstract: Ni-Fe-C-Si self-lubricating alloy was prepared by melting method. The effects of iron content on the mechanical, dry friction and oil lubrication friction properties were investigated. The results show that with increasing of iron content, the content of graphite and the self-lubrication of the alloy increase, the impact toughness and the tensile strength decrease, and the hardness reduces at first and then increases. Both the coefficients of dry friction and oil lubrication reduce with increasing of iron content, and the wear rate reduces with the increasing of hardness values. The dry friction coefficient of Ni-60Fe-3.5C-1Si alloy (mass fraction, %) is the smallest, and the dry friction and oil lubrication coefficients of the alloy are 0.18 and 0.40, respectively.
Key words: Ni-Fe-C-Si alloy；self-lubricating；melting；friction and wear
