Wood/Cu复合材料的温压成形与表征

Warm compaction and characterization of Wood/Cu composite material

应用木材科学与技术、粉末冶金等交叉学科材料成形理论开发的木质粉末温压成形新技术,以芦苇秆(简称Wood)粉末为基材,在不添加任何可能造成环境污染的胶粘剂的前提下,制备的Wood/Cu复合材料的静曲强度、内结合强度分别高达85.55MPa、6.75MPa,磨耗量≤0.05g/100r、吸水率<0.50%,且具有韧性断裂特征;采用Wood/Cu复合材料制备的滑动轴承的压溃强度、表观硬度分别高达100MPa、50HB,可望用于替代粉末冶金烧结青铜生产轻载滑动轴承,从而在节约有色金属的同时,为农林木质剩余物的高质清洁利用开辟一条新途径。

Using interdisciplinary material forming theory of wood science and technology,powder metallurgy etc.,the new technology of wooden warm compaction has been developed.Taking reed powder as substrate without any adhesive,the static bending strength and internal bond strength of produced Wood/Cu composite material reach up to 85.55MPa and 6.75MPa respectively,the wear loss of the material is ≤ 0.05g/100r,the water absorption of the material is 〈 0.50% ; and the fracture is of ductile fracture.The crushing strength and apparent hardness of the sliding bearing produced by Wood/Cu composite material can reach 100MPa and 50HB respectively.The composites can be used to produce fractional load sliding bearing and replace sintered bronze.Thus,the nonferrous metal can be saved and a new path is opened up to use the wood.