润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2014年
2期
94-99,118
,共7页
朱松%汤中华%王磊%杜利清%李岫%葛烽锋
硃鬆%湯中華%王磊%杜利清%李岫%葛烽鋒
주송%탕중화%왕뢰%두리청%리수%갈봉봉
Al基复合材料%致密化%力学性能%摩擦磨损性能
Al基複閤材料%緻密化%力學性能%摩抆磨損性能
Al기복합재료%치밀화%역학성능%마찰마손성능
Al-base composites material%densification%mechanical property%friction and wear properties
采用粉末冶金方法制备填充改性Al基复合摩擦材料，研究SiC含量及粒度对材料性能及显微组织的影响。结果表明，随SiC含量增加，材料的相对密度、抗弯强度不断降低，摩擦因数逐渐增大，洛氏硬度先增大后减小，比磨损率先降低后增大；随SiC粒度增大，材料相对密度、抗弯强度、洛氏硬度逐渐变大，摩擦因数先增大后减少，比磨损率不断增加。SiC粒度为20μm、质量分数为25％时改性Al基复合摩擦材料有稳定合适的摩擦因数和较低的比磨损率。
採用粉末冶金方法製備填充改性Al基複閤摩抆材料，研究SiC含量及粒度對材料性能及顯微組織的影響。結果錶明，隨SiC含量增加，材料的相對密度、抗彎彊度不斷降低，摩抆因數逐漸增大，洛氏硬度先增大後減小，比磨損率先降低後增大；隨SiC粒度增大，材料相對密度、抗彎彊度、洛氏硬度逐漸變大，摩抆因數先增大後減少，比磨損率不斷增加。SiC粒度為20μm、質量分數為25％時改性Al基複閤摩抆材料有穩定閤適的摩抆因數和較低的比磨損率。
채용분말야금방법제비전충개성Al기복합마찰재료，연구SiC함량급립도대재료성능급현미조직적영향。결과표명，수SiC함량증가，재료적상대밀도、항만강도불단강저，마찰인수축점증대，락씨경도선증대후감소，비마손솔선강저후증대；수SiC립도증대，재료상대밀도、항만강도、락씨경도축점변대，마찰인수선증대후감소，비마손솔불단증가。SiC립도위20μm、질량분수위25％시개성Al기복합마찰재료유은정합괄적마찰인수화교저적비마손솔。
The Al-based composite friction materials were prepared by powder metallurgy,and the effects of the content and particle size of SiC on the on the properties of composite friction materials were studied.The results show that along with increasing of the of SiC content,the relative density and the bending strength of the composite friction materials are decreased continuously,the friction coefficient is increased gradually,the Rockwell hardness is increased at first and then decreased,and the specific wear rate is decreased at first and then increased.With the increase of SiC particle size,the rel-ative density,bending strength and Rockwell hardness are increased gradually,the friction coefficient is increased at first and then decreased,and the specific wear rate is increased continuously.The Al-based composite friction material has sta-ble and moderate friction coefficient and extremely low wear rate when modified by 25%of SiC mass fraction with particle size of 20 μm.
