| Much Improved Self-Organized In(0.53)Ga(0.47)As Quantum Wire Lasers Grown on (775)B InP Substrates by Molecular Beam Epitaxy |
2006 |
6 pages |
| Authors:
K. Ohmori; H. Hino; T. Fujita; T. Kitada; S. Shimomura; S. Hiyamizu; OSAKA UNIV (JAPAN) GRADUATE SCHOOL OF ENGINEERING
|
 | A self-organized In(0.53)Ga(0.47)As/(In(0.53)Ga(0.47)As)(2)(In(0.44)Al(0.56)As)(2) quantum wire (QWR) laser was grown on a (775)B InP substrate by molecular beam epitaxy (MBE). Well lattice-matched and flat cladding layers were grown at a rather high temperature (595 degrees C). Lateral confinement potential was induced by a nano-meter scale interface corrugation of InGaAs/(InGaAs)(2)(InAlAs)(2) with an amplitude of 2 nm and a period of 40 nm. A 50 micrometers x 500 micrometers stripe-contact QWR laser with ... |
|
| Properties and Microstructure of Mullite-Glass Ceramics for Multilayer Ceramic Substrates. |
1992 |
|
| Authors:
N. Ushifusa; K. Sakamoto; S. Ogihara; T. Fujita; HITACHI LTD IBARAKI (JAPAN) HITACHI RESEARCH LAB
|
 | Mullite (3Al2O3-2SiO2) has a low thermal expansion coefficient and a low dielectric constant making it a favorable material for substrate applications. Sintering of pure mullite ceramics is difficult, however, even above 1700 C. Thus, mullite-glass ceramics containing glass additives (Al2O3-MgO-SiO2 glass) which could be sintered at about 1600 C were fabricated and their properties were investigated. The ternary system diagram of Al2O3-MgO-SiO2 shows that high SiO2 content glass deposits cristobalite ... |
|
| Semisolid Extrusion of AA6061 Alloy Reinforced With Alumina Short Fiber. |
1989 |
|
| Authors:
K. Suganuma; K. Niihara; T. Fujita; T. Okamoto; N. Suzuki; NATIONAL DEFENSE ACADEMY YOKOSUKA (JAPAN)
|
| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, data, dr mmc, mmc, mmc data, reinforcement data materials and material types:, 6061 matrix, al matrix, al2o3 short fibers, al2o3/6061, al2o3/al, short fibers material characteristics and data fields:, breaking strength, fiber length data, interfacial properties, short fiber data, tensile strength, tensile strength data parameter values relevant to the data:, 600 c ... |
|
| Stress-Induced Transformation during Compression of ZrO(sub 2)-4 mol% Y(sub 2)O(sub 3), |
AUG 1988 |
|
| Authors:
M. Shimbo; M. Ueki; Y. Miyano; S. Ishihara; T. Fujita
|
| In order to grasp the relation between the stress-induced transformation and the mechanical behavior of the partially-stabilized zirconia (PSZ) more sensitively, uniaxial compression tests were employed. The test material was a PSZ with 4 mol% yttria and compression specimens were formed into cylindrical shapes 6 mm diameter x 10 mm and fired at 1773 K for 1 hour. The stress-strain curves obtained by compression test at temperatures from 673 to ... |
|
| Properties of Al-Si-X P/M Alloys Using Rapidly Solidified Powders, |
OCT 1987 |
|
| Authors:
T. Hirano; T. Fujita
|
| Rapidly solidified (RS) powder metallurgy (P/M) Al-Si-X system alloys were investigated. The P/M alloys were based on a hypereutectic Al-Si system, to which transition elements (Fe, Ni, Mn) were added up to 10 wt% as well as 3Cu and 1Mg in order to improve the strength at elevated and room temperature, respectively. An addition of a transition element caused an intermetallic compound to be formed. Extruded P/M alloys had fine ... |
|
| Development of Al-Si-X P/M Alloys Using Rapidly Solidified Powders, |
1986 |
|
| Authors:
T. Hirano; F. Ohmi; S. Horie; F. Kiyoto; T. Fujita; SHOWA DENKO K K CHICHIBU (JAPAN) CHICHIBU RESEARCH LAB*
|
| Hypereutectic Al-Si-X alloys (Si = 12 to 30 wt.%) were formed from air atomized powder at cooling rates of 1000 to 10,000 K/s. Up to 10 wt.% of Fe, Ni or Mn were present as the X ingredient. All alloys had 3Cu and 1Mg added for improved strength. The billets were extruded into bars, solution heat treated at 748 K for 2 hours, water quenched, aged at 448 K for ... |
|
| Low Temperature Ductility and Retained Austenite in Some Ferritic Cryogenic Nickel Steels |
SEP 1982 |
|
| Authors:
K. Nagai; K. Shibata; T. Fujita
|
| Nickel steels show larger elongation with a decrease in temperature so long as they are ductile. These steels sometimes contain a certain amount of retained austenite; therefore, this phase might contribute to the increase in elongation through transformation-induced-plasticity, i.e. TRIP effect. This effect of t(r) has been also proposed as one of the possible mechanisms to improve toughness of ferritic steels for cryogenic service such as 5.5 Ni steel, 9 ... |
|
| INTERNAL FLOW FOR GROUND EFFECT MACHINES |
15 OCT 1960 |
|
| Authors:
T. STRAND; T. Fujita; VEHICLE RESEARCH CORP PASADENA CA
|
|
| EFFECT OF BORON ON LONG PERIOD CREEP RUPTURE STRENGTH OF 12% CR HEAT RESISTING STEEL, |
|
|
| Authors:
N. Takahashi; T. Fujita; T. YAMADA
|
|
Reports by Author
