特种铸造及有色合金
特種鑄造及有色閤金
특충주조급유색합금
SPECIAL CASTING & NONFERROUS ALLOYS
2010年
2期
149-152
,共4页
溶胶-凝胶%固相含量%粘度%添加剂%陶瓷型芯
溶膠-凝膠%固相含量%粘度%添加劑%陶瓷型芯
용효-응효%고상함량%점도%첨가제%도자형심
Sol-gel%Solid Content%Viscosity%Aadditive%Ceramic Core
溶胶-凝胶成型是制备成分均匀、结构复杂陶瓷型芯最理想的成型工艺.以降低浆料粘度和提高固相含量为研究方向,从不同固相含量、颗粒度、添加剂对型芯性能的影响进行分析,以及研究pH值对浆料流动性的影响,并制备出固相含量为58%、动力粘度为0.46 MPa·s的氧化铝陶瓷浆料,其成型后坯体湿强度可达约34 MPa,完全满足后续加工要求.
溶膠-凝膠成型是製備成分均勻、結構複雜陶瓷型芯最理想的成型工藝.以降低漿料粘度和提高固相含量為研究方嚮,從不同固相含量、顆粒度、添加劑對型芯性能的影響進行分析,以及研究pH值對漿料流動性的影響,併製備齣固相含量為58%、動力粘度為0.46 MPa·s的氧化鋁陶瓷漿料,其成型後坯體濕彊度可達約34 MPa,完全滿足後續加工要求.
용효-응효성형시제비성분균균、결구복잡도자형심최이상적성형공예.이강저장료점도화제고고상함량위연구방향,종불동고상함량、과립도、첨가제대형심성능적영향진행분석,이급연구pH치대장료류동성적영향,병제비출고상함량위58%、동력점도위0.46 MPa·s적양화려도자장료,기성형후배체습강도가체약34 MPa,완전만족후속가공요구.
Sol-gel forming is a desirable technology for preparing ceramic mold with homogeneous composition and complex structure. Effects of different solid content, particle rate and additive on performance of ceramic core were investigated, and effects of pH value on fluidity of slurry were analyzed to decrease slurry viscosity and improve the solid content. Al2O3 ceramic slurry with 58% solid content and 0.086 Pa·s viscosity was successfully prepared. Green strength of formed billets can reach up to 34MPa, fully meeting the requirements of next production.
