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| 1 | Melt Infiltration Ability and Microstructural Evolution of Fe40Al/ TiC Composites System显示文摘Pressureless melt infiltration is an economic route f or preparation of high-density ceramic/melt composites. In this study, the Fe40 Al iron aluminide intermetallic, a low cost material of excellent oxidation and corrosion resistance, was used as binder for fabricating Fe40Al/TiC composites b y pressureless melt infiltration. The wetting ability of liquid Fe40Al in porous TiC pre-form was studied by in-situ monitoring the melting and infiltration p rocess. The infiltration ability was investigated by observing the distance of l iquid Fe40Al intrusion in porous TiC pre-forms at different infiltration temper atures and times by using optical microscope. Porous TiC per-forms with density of 60%~88%TD (theoretical density), prepared under pre-defined sintering temp e rature cycles, were used for fabricating Fe40Al/TiC composites in the range of 1 2%~40% metal content by volume. Almost full dense Fe40Al/TiC composites were su c cessfully fabricated by this technique. Liquid Fe40Al exhibited excellent infilt ration ability, the distance of complete intrusion of liquid Fe40Al in the TiC s intered pre-form with density of 88%TD was over 7 mm after 5 min at the inf iltration temperature of 1 450 ℃. Microstructural observation by SEM and TEM also showed that liquid Fe40Al filled the very narrow gaps among TiC particles, the interfaces of TiC particles and F e40Al plastic ligaments being metallurgical bonded. TEM revealed that high densi ty of dislocations formed in Fe40Al ligaments during solidification, which favor the mechanical properties. Ti decomposed from TiC particles and dissolved into Fe40Al during infiltration. According to the compositional analysis of TEM-EDS, the concentration of Ti in Fe40Al ranges at 1at%~4at% depending on composite f a bricating conditions and the distance from the measuring point to the closest Ti C particles. XRD analysis indicated that the composites were composed of two pha ses, the original TiC and Fe 0.4Al 0.6 intermetallic. No new phase formed during infiltration, but the lattice parameter of Fe 0.4Al 0.6 was expended due to the Ti in the solid solution. | F J Oliveira J L Baptista J M Vieira | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 2 |
| 2 | Substrate specificity, environmental degradation and disturbance structuring macroinvertebrate assemblages in neotropical streams 显示文摘 | Buss D F Baptista D F Nessimian J L | 2004 | Hydrobiologia2004，518，： | 1 |
| 3 | Hard and sp2-rich amorphous carbon structure formed by ion beam irradiation of fullerene,a-C and polymeric a-C:H films显示文摘 | Baptista D L Zawislak F C | 2004 | Diamond and Related Materials2004，，13： | 1 |
| 4 | Skeletal mass in adolescent male athletes and nonathletes:Relationships with high-impact sports显示文摘 | DIAS Q A L CARNERO E A BAPTISTA F M et a l | 2011 | J Strength Condition Res2011，25，12： | 1 |
| 5 | Behavior and tasxonomic status of Grayson' s Dove显示文摘 | Baptista L F | 1983 | Auk1983，101，： | 1 |
| 6 | Geochemistry and risk assessment of J street dust in Luanda, Angnla, A tropical urban environment 显示文摘 | Baptista L F De Miguel E | 2005 | Atmospheric Environment2005，39，25： | 1 |
| 7 | Hard and sp^2-rich amorphous carbon structure formed by ion beam irradiation of fullerene,a-C and polymeric a-C:H films 显示文摘 | Baptista D L Zawislak F C | 2004 | Diamond and Related Materials2004，13，： | 1 |
| 8 | Force control of robotic manipulators using a fuzzy predictive approach显示文摘 | Baptista L F Sousa J M | 2001 | Journal of Intelligent and Robotic Systems2001，30，4： | 1 |
| 9 | Force control of a very lightweight single-link flexible arm based on coupling torque feedback 显示文摘 | Baptista L F | 2009 | Mechatronics2009，，： | 1 |
| 10 | On the origin of Darwin's finches显示文摘 | BAPTISTA L F TRAIL P W | 1988 | AUK1988，105，： | 1 |
| 11 | Microencapsulation of acid dyes in mixed lecithin/surfactant liposomic structures显示文摘 | Gomes J Baptista A L F | 2001 | Textile Research Journal2001，71，2： | 1 |
| 12 | Using Federated Catalogs to Improve Semantic Integration among Spatial Data Infrastructures 显示文摘 | DEANDRADE F G BAPTISTA C D S LEITEJR F L | 2011 | Transactions in GIS2011，15，5： | 1 |
| 13 | Factors inf1uencing Sa1mone11acarcass preva1ence in Danish pig abattoirs显示文摘 | BAPTISTA F M DAHL J NIELSEN L R | 2010 | Prev Vet Med2010，95，34： | 1 |
| 14 | Fuzzy predictive algorithms applied to real-time force control显示文摘 | Baptista L F Sousa J M | 2001 | Control Engineering Practice2001，9，4： | 1 |
| 15 | Force control of robotic manipulators using a fuzzy predictive approach显示文摘 | Sousa J M | 2001 | Journal of Intelligent and Robotic Systems2001，30，4： | 1 |
| 16 | Effect of Lactarius piperatus fruiting body maturity stage on antioxidant activity measuredby several biochemical assays显示文摘 | BARROS L BAPTISTA P FERREIRA I C F R | 2007 | Food and Chemical Toxicology2007，45，： | 1 |
| 17 | Fuzzy predictive algorithms applied to real-time force control显示文摘 | Baptista L F Sousa J M Sa Da Costa J M G | 2001 | Control Engineering Practice2001，9，4： | 1 |
| 18 | Substrate specificity, environmental degradation and disturbance structuring macroinvertebrate assemblages in neotropical streams 显示文摘 | Buss D F Baptista D F Nessimian J L | 2004 | Hydrobiologia2004，518，： | 1 |
| 19 | Hard and sp2-rich amorphous carbon structure formed by ion beam irradiation of fullerene,a-C and polymeric a-C ∶ H films显示文摘 | Baptista D L Zawislak F C | 2004 | Diamond Relat Mater2004，13，10： | 1 |
| 20 | Substrate spe- cificity, environmental degradation and disturbance structur- ing macroinvertebrate assemblages in neotropical streams 显示文摘 | Buss D F Baptista D F Nessimian J L | 2004 | Hydrobiologia2004，518，13： | 1 |
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