LASER SURFACE-TREATMENT DOMINATED BY BUOYANCY FLOWS

被引:11
作者
SCHUSSLER, A
STEEN, PH
EHRHARD, P
机构
[1] CORNELL UNIV,DEPT CHEM ENGN,ITHACA,NY 14853
[2] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST ANGEW THERMO & FLUIDDYNAM,W-7500 KARLSRUHE 1,GERMANY
关键词
D O I
10.1063/1.351161
中图分类号
O59 [应用物理学];
学科分类号
摘要
An experimental setup is investigated wherein surface tension forces are suppressed during laser treatment and the melt pool convection is controlled by buoyancy forces. The structure of surfaces processed by this method differs from those of conventionally treated surfaces. A dimensionless measure of buoyancy-flow strength, namely the Grashof number, is employed to quantify the flow intensity that is linked to the breakdown of the covering particle coating. Using a two-dimensional numerical approach the flow and temperature fields are computed.
引用
收藏
页码:1972 / 1975
页数:4
相关论文
共 50 条
[41]   NITROTEC SURFACE-TREATMENT TECHNOLOGY [J].
DAWES, C ;
TRANTER, DF .
HEAT TREATMENT OF METALS, 1985, 12 (03) :70-76
[42]   PLASMA SPECTROSCOPY FOR SURFACE-TREATMENT [J].
RICARD, A .
ANNALES DE CHIMIE-SCIENCE DES MATERIAUX, 1983, 8 (04) :303-318
[43]   BITUMINOUS SURFACE-TREATMENT + ROADWAYS [J].
JEWELL, L .
LANDSCAPE ARCHITECTURE, 1983, 73 (02) :88-90
[44]   SPECTROSCOPY OF PLASMAS FOR SURFACE-TREATMENT [J].
RICARD, A .
VIDE-SCIENCE TECHNIQUE ET APPLICATIONS, 1986, 41 (230) :13-26
[45]   UPGRADING OF NEWSPRINT BY SURFACE-TREATMENT [J].
BERGH, NO ;
SVENKA, P .
PULP & PAPER-CANADA, 1991, 92 (04) :52-58
[46]   MASS-TRANSFER DURING THE CONTINUOUS SURFACE-TREATMENT OF METALS BY LASER GLAZING [J].
BOROVSKII, IB ;
GORODSKII, DD ;
SHARAFEEV, IM ;
MORIASHCHEV, SF .
DOKLADY AKADEMII NAUK SSSR, 1982, 263 (03) :616-618
[47]   THE IMPORTANCE OF SURFACE CHARACTERIZATION IN SURFACE-TREATMENT PROCESSES [J].
TURLEY, DM ;
DOYLE, ED .
WEAR, 1982, 81 (01) :145-158
[48]   ULTRAVIOLET LASER-ASSISTED SURFACE-TREATMENT OF INP WITH PHOSPHINE AND HYDROGEN MIXTURE [J].
SUGINO, T ;
ITOH, H ;
BOONYASIRIKOOL, A ;
SHIRAFUJI, J .
JOURNAL OF ELECTRONIC MATERIALS, 1990, 19 (07) :2-3
[49]   Hydrodynamics of surface tension dominated flows [J].
Papageorgiu, DT .
INTERFACIAL PHENOMENA AND THE MARANGONI EFFECT, 2002, (428) :41-88
[50]   ORNL FACILITATES COLLABORATIVE LASER ION-BEAM SURFACE-TREATMENT RESEARCH [J].
不详 .
LASER FOCUS-ELECTRO-OPTICS, 1984, 20 (05) :33-34