期刊论文

Wu, Qing-Ding

中文

粉末冶金材料科学与工程

1673-0224

2014

19

4

665-670

10.3969/j.issn.1673-0224.2014.04.026

国家林业公益性行业科研专项经费资助项目（201404508） 湖南省自然科学基金/常德市联合基金资助项目（14JJ5018）住房和城乡建设部科学技术项目（2012-K4-27） 湖南省科技计划资助项目（2013SK3156）

本校为第一且通讯机构

以棉梗粉末（C-stalk）为基材、电解紫铜粉末为强化因子,添加聚乙烯（PE）作为分散剂,采用温压成形法制备C-stalk/Cu复合材料标准试件和滑动轴承,测定该复合材料的静曲强度、内结合强度、吸水率、表面耐磨性、以及轴承的压溃强度与表观硬度,并观察试件的断口形貌。结果表明：C-stalk/Cu复合材料塑化充分、吸水率低,其静曲强度、内结合强度分别高达92.67 MPa和7.55 MPa,磨耗量仅为优等实木地板漆膜的1/2（〈0.05 g/100 r）,优于相对密度为80%的6-6-3青铜烧结材料;C-stalk/Cu复合材料制备的滑动轴承,其压溃强度、表观硬度分别高达105.2 MPa和55 HB,可望用来替代烧结青铜生产轻载滑动轴承。

Taking cotton stalk powder as substrate, electrolyte copper powder as intensifier and polyethylene (PE) for dispersant, C-stalk/Cu composite standard specimens and sliding bearings were prepared by warm compaction. Modulus of rupture (MOR), internal bond strength, water absorption and surface abrasive resistance of composite materials as well as crushing strength and apparent hardness of bearings were measured. Moreover, fracture morphology of specimens was observed. The results showed that C-stalk/Cu composite materials are plasticized abundantly with low water absorption, modulus of rupture ...