活塞用长纤维绕编碳/碳复合材料的微观结构和性能
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摘要
制备了一种具有明显各向异性的碳/碳复合活塞材料。借助金相显微镜、扫描电镜等手段,对其微观结构进行了表征,研究其抗拉强度、热膨胀系数和摩擦磨损性能。结果表明,作为活塞用碳/碳复合材料,采用化学气相渗透(CVI)增密获得粗糙层结构的沉积碳,以提高其导热性能而不能使用沉积碳的光滑结构。室温下X、Z方向抗拉强度表现优异,约为400 MPa,在X、Z两个方向的热膨胀系数都小于0.5×10~(-6)K~(-1),Y向的热膨胀系数近似于零。长纤维绕编碳/碳材料比高镍铸铁具有更好的耐磨性。
A C/C composites for piston with obvious anisotropy was prepared.The microstructure of the composites was characterized by metallographic microscope and scanning electron microscope.The tensile strength,thermal expansion coefficient and friction-wear properties of the composites were investigated.The results show that as the piston C/C composites,chemical vaporization infiltration(CVI)is used to prepare the deposited carbon with rough laminar structure to improve its thermal conductivity and avoid the smooth structure of sedimentary carbon.At room temperature,the tensile strength of the composites at the X and Z directions exhibits desirable,about 400 MPa.The thermal expansion coefficient at the X and Z directions is less than 0.5×10~(-6) K~(-1),while the thermal expansion coefficient at Y direction is closed to zero.Long fiber coiled C/C material has the higher wear resistance than high nickel cast iron.
A C/C composites for piston with obvious anisotropy was prepared.The microstructure of the composites was characterized by metallographic microscope and scanning electron microscope.The tensile strength,thermal expansion coefficient and friction-wear properties of the composites were investigated.The results show that as the piston C/C composites,chemical vaporization infiltration(CVI)is used to prepare the deposited carbon with rough laminar structure to improve its thermal conductivity and avoid the smooth structure of sedimentary carbon.At room temperature,the tensile strength of the composites at the X and Z directions exhibits desirable,about 400 MPa.The thermal expansion coefficient at the X and Z directions is less than 0.5×10~(-6) K~(-1),while the thermal expansion coefficient at Y direction is closed to zero.Long fiber coiled C/C material has the higher wear resistance than high nickel cast iron.
引文
[1]郭领军,李贺军,石振海.内燃机活塞材料的研究及应用述评[J].铸造,2003,52(9):657-660.
[2]王杰芳,谢敬佩,刘忠侠,等.国内外铝硅活塞合金的研究及应用述评[J].铸造,2005,54(1):24-27.
[3]刘世英,翟鹏,王志明.高负荷柴油机锻钢活塞的研究开发[J].内燃机工程,2006,27(6):30-32.
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[5]陈刚,贺跃辉,沈培智.发动机活塞和缸套材料及其加工工艺研究现状[J].粉末冶金材料科学与工程,2009,8(4):205-212.
[6]刘怀喜,高琳,马润香.新型活塞材料的研究[J].热加工工艺,2011,40(4):90-91.
[7]李翠云,李辅安.碳/碳复合材料的应用研究进展[J].化工新型材料,2006(3):18-20.
[8]李铁虎,乔生儒,张秋禹,等.高性能碳/碳复合材料的工艺理论与应用基础研究[J].科技和产业,2003(2):46-49.
[9]刘锦,刘秀军,胡子君.等.碳/碳复合材料致密化影响因素的研究进展[J].天津工业大学学报,2010,29(1):31-35.
[10]黄剑锋,张玉涛,李贺军,等.国内碳/碳复合材料高温抗氧化涂层研究新进展[J].航空材料学报,2007(2):74-78.
[11]施伟,谭毅,曹作暄.低密度碳/碳复合材料的制备与性能[J].机械工程材料,2012(11):76-78.
[12]黄敏,李克智,李贺军.碳/碳复合材料SiC/W-Al-Si涂层微观结构及抗氧化性能[J].材料热处理学报,2011,32(7):17-20.
[13]申健.活塞的理想材料——碳[J].汽车工艺与材料,1996(2):31-33.
[14]全宏声.高温碳/碳复合材料活塞[J].材料工程,1996(1):45-47.
[15]朱会田.一种新型的活塞——碳活塞[J].汽车与配件,2000(S1):37-40.
[16]王子旺,储双杰,王浩伟,等.碳/碳复合材料活塞的制造与性能[J].材料开发与应用,1996(1):44-47.
[2]王杰芳,谢敬佩,刘忠侠,等.国内外铝硅活塞合金的研究及应用述评[J].铸造,2005,54(1):24-27.
[3]刘世英,翟鹏,王志明.高负荷柴油机锻钢活塞的研究开发[J].内燃机工程,2006,27(6):30-32.
[4]王立东.活塞用新型铝合金和SiCP/Al复合材料的疲劳行为研究[D].西安:西安工业大学,2006.
[5]陈刚,贺跃辉,沈培智.发动机活塞和缸套材料及其加工工艺研究现状[J].粉末冶金材料科学与工程,2009,8(4):205-212.
[6]刘怀喜,高琳,马润香.新型活塞材料的研究[J].热加工工艺,2011,40(4):90-91.
[7]李翠云,李辅安.碳/碳复合材料的应用研究进展[J].化工新型材料,2006(3):18-20.
[8]李铁虎,乔生儒,张秋禹,等.高性能碳/碳复合材料的工艺理论与应用基础研究[J].科技和产业,2003(2):46-49.
[9]刘锦,刘秀军,胡子君.等.碳/碳复合材料致密化影响因素的研究进展[J].天津工业大学学报,2010,29(1):31-35.
[10]黄剑锋,张玉涛,李贺军,等.国内碳/碳复合材料高温抗氧化涂层研究新进展[J].航空材料学报,2007(2):74-78.
[11]施伟,谭毅,曹作暄.低密度碳/碳复合材料的制备与性能[J].机械工程材料,2012(11):76-78.
[12]黄敏,李克智,李贺军.碳/碳复合材料SiC/W-Al-Si涂层微观结构及抗氧化性能[J].材料热处理学报,2011,32(7):17-20.
[13]申健.活塞的理想材料——碳[J].汽车工艺与材料,1996(2):31-33.
[14]全宏声.高温碳/碳复合材料活塞[J].材料工程,1996(1):45-47.
[15]朱会田.一种新型的活塞——碳活塞[J].汽车与配件,2000(S1):37-40.
[16]王子旺,储双杰,王浩伟,等.碳/碳复合材料活塞的制造与性能[J].材料开发与应用,1996(1):44-47.