Experimental and numerical investigation of heat transfer and phase change phenomena during excimer laser interaction with nickel

被引：56

作者：

Xu, X ^{[1
]}

Chen, G ^{[1
]}

Song, KH ^{[1
]}

机构：

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1999年 / 42卷 / 08期

基金：

美国国家科学基金会;

关键词：

pulsed laser; homogeneous nucleation explosive phase transformation; heat transfer;

D O I：

10.1016/S0017-9310(98)00272-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work investigates heat transfer and phase change phenomena during excimer laser interaction with nickel specimens. Based on time-resolved measurements in the laser fluence range between 2.5 J cm(-2) and 10.5 J cm(-2), it is found that surface evaporation occurs when the laser fluence is below 5.2 J cm(-2). At a laser fluence of 5.2 J cm(-2) or higher, explosive-type vaporization takes place. Numerical calculations show the maximum surface temperature reaches 0.84T(c) at a laser fluence of 5.2 J cm(-2), and 0.9T(c) at a laser fluence of 5.9 J cm(-2). The numerical results agree with the experiments on the mechanisms of materials removal in different laser fluence regions. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1371 / 1382

页数：12

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