功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2014年
7期
7079-7083
,共5页
季鹏飞%陈刚%周小亮%赵玉涛%张振亚%朱敏华
季鵬飛%陳剛%週小亮%趙玉濤%張振亞%硃敏華
계붕비%진강%주소량%조옥도%장진아%주민화
SiO2粉末%半固态机械搅拌%超声作用%铝基复合材料
SiO2粉末%半固態機械攪拌%超聲作用%鋁基複閤材料
SiO2분말%반고태궤계교반%초성작용%려기복합재료
SiO2 powder%semi-solid mechanical stirring%ultrasonic treatment%aluminum matrix composites
基于 SiO 2/Al-10Si 反应体系,通过半固态机械搅拌法及高能超声处理组合工艺,成功制备出Al2 O 3颗粒增强铝基复合材料.SiO 2粉体预处理及铝熔体 Mg 元素活化有效改善了两者间的润湿性,在转速700 r/min、搅拌10 min 的条件下,可获得 SiO 2颗粒均匀分布的微观组织;升温后,经过高能超声进一步熔体处理,不仅促进了 SiO 2/Al 的原位置换反应,而且空化消除了残余气体.金相显微镜(OM)、X 射线衍射仪(XRD)、扫描电子显微镜(SEM)和能谱仪(EDS)的分析检测表明,原位生成的 Al2 O 3颗粒均匀地分布于 Al-Si 合金基体中.
基于 SiO 2/Al-10Si 反應體繫,通過半固態機械攪拌法及高能超聲處理組閤工藝,成功製備齣Al2 O 3顆粒增彊鋁基複閤材料.SiO 2粉體預處理及鋁鎔體 Mg 元素活化有效改善瞭兩者間的潤濕性,在轉速700 r/min、攪拌10 min 的條件下,可穫得 SiO 2顆粒均勻分佈的微觀組織;升溫後,經過高能超聲進一步鎔體處理,不僅促進瞭 SiO 2/Al 的原位置換反應,而且空化消除瞭殘餘氣體.金相顯微鏡(OM)、X 射線衍射儀(XRD)、掃描電子顯微鏡(SEM)和能譜儀(EDS)的分析檢測錶明,原位生成的 Al2 O 3顆粒均勻地分佈于 Al-Si 閤金基體中.
기우 SiO 2/Al-10Si 반응체계,통과반고태궤계교반법급고능초성처리조합공예,성공제비출Al2 O 3과립증강려기복합재료.SiO 2분체예처리급려용체 Mg 원소활화유효개선료량자간적윤습성,재전속700 r/min、교반10 min 적조건하,가획득 SiO 2과립균균분포적미관조직;승온후,경과고능초성진일보용체처리,불부촉진료 SiO 2/Al 적원위치환반응,이차공화소제료잔여기체.금상현미경(OM)、X 사선연사의(XRD)、소묘전자현미경(SEM)화능보의(EDS)적분석검측표명,원위생성적 Al2 O 3과립균균지분포우 Al-Si 합금기체중.
Based on the SiO 2/Al-10Si reaction system,Al2 O 3 particle reinforced aluminum matrix composites was successfully prepared through the combined process of semi-solid mechanical stirring and high-energy ultra-sound treatment.Pretreatment of SiO 2 powder and activation of aluminum melt by Mg improve the wettability of each other.Under the condition of a 700 r/min stirring speed and a 10 min stirring time,uniform distribution of SiO 2 particles can be obtained.After the temperature increased,a further step of the high-energy ultrasonic treatment to the melt followed,not only promoting the in-situ displacement reaction of SiO 2 and Al,but also eliminating the residual gas by acoustic cavitation.The analysis through optical microscopy (OM),X-ray dif-fraction (XRD),scanning electron microscopy (SEM)and energy dispersive spectroscopy (EDS)showed that in situ processed Al2 O 3 particles distributed uniformly in the aluminum silicon alloy matrix.