EFFECT OF THE SURFACE-ROUGHNESS OF SUBSTRATES ON THE CORROSION PROPERTIES OF FILMS COATED BY PHYSICAL VAPOR-DEPOSITION

被引:39
作者
MUNEMASA, J
KUMAKIRI, T
机构
[1] Technology Development Centre, Machinery and Engineering Division, Kobe Steel Ltd., Nishi-ku, Kobe, Hyogo, 651-22
关键词
D O I
10.1016/0257-8972(91)90106-7
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The most important point in coating corrosion-resistant films is to make no pinholes. To research the relationship between the surface roughness and the birth of pinholes, we prepared a carbon tool steel, SK5(JIS), for substrates finished to various kinds of surface roughness (R(max) = 0.2-17-mu-m). Titanium and TiN were deposited on these substrates by the magnetron sputtering method. To detect pinholes, we carried out ferroxyl tests. The number of pinholes was counted by quantitative measurements using an image analyser. Furthermore, we researched the effects of total film thickness and multilayer coatings on the reduction in the number of pinholes. As a result, it was found that for R(max) < 1-mu-m (for titanium films) and for R(max) < 3-mu-m (for TiN films), the numbers of pinholes are less than 10 and 20 respectively in a 400 mm2 area. Also we could reduce the number of pinholes drastically by increasing the number of layers to 10 in multilayer coatings.
引用
收藏
页码:496 / 499
页数:4
相关论文
共 3 条
[1]   CORROSION-RESISTANT AND HARD 310 STAINLESS-STEEL CARBON COATINGS PREPARED BY REACTIVE DC MAGNETRON SPUTTERING [J].
BILLARD, A ;
FOOS, M ;
FRANTZ, C ;
GANTOIS, M .
SURFACE & COATINGS TECHNOLOGY, 1990, 43-4 (1-3) :521-532
[2]   CORROSION BEHAVIOR AND PROTECTIVE QUALITY OF TIN COATINGS [J].
MANTYLA, TA ;
HELEVIRTA, PJ ;
LEPISTO, TT ;
SIITONEN, PT .
THIN SOLID FILMS, 1985, 126 (3-4) :275-281
[3]   CORROSION PERFORMANCE OF LAYERED COATINGS PRODUCED BY PHYSICAL VAPOR-DEPOSITION [J].
PARK, MJ ;
LEYLAND, A ;
MATTHEWS, A .
SURFACE & COATINGS TECHNOLOGY, 1990, 43-4 (1-3) :481-492