INFLUENCE OF PARTICLE PARAMETERS AT IMPACT ON SPLAT FORMATION AND SOLIDIFICATION IN PLASMA SPRAYING PROCESSES

被引：215

作者：

VARDELLE, M

VARDELLE, A

LEGER, AC

FAUCHAIS, P

GOBIN, D

机构：

[1] UNIV LIMOGES,FAC SCI,LMCTS EQUIPE PLASMA LASER MAT,F-87060 LIMOGES,FRANCE

[2] UNIV PARIS,FAST,F-91405 ORSAY,FRANCE

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 1995年 / 4卷 / 01期

关键词：

COOLING RATE; MADE[!text type='JS']JS[!/text]KI RELATIONSHIP; PARTICLE DIAGNOSTICS; SPLAT FORMATION; SPLAT MORPHOLOGY;

D O I：

10.1007/BF02648528

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A measurement system consisting of two high-speed two-color pyrometers was used to monitor the flattening degree and cooling rate of zirconia particles on a smooth steel substrate at 75 or 150 degrees C during plasma spray deposition, This instrument provided data on the deformation behavior and freezing of a particle when it impinged on the surface, in connection with its velocity, size, and molten state at impact. The results emphasized the influence of temperature and surface conditions on particle spreading and cooling, When the substrate temperature was 150 degrees C, the splats had a perfect lenticular shape, and the thermal interface resistance between the lamella and the substrate ranged from 10(-7) to 10(-8) W/m(2) . K. The dependence of the flattening degree on the Reynolds number was investigated.

引用

页码：50 / 58

页数：9

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