Formation of Tungsten Carbide Coatings with Different Thermal Spray Guns

被引：0
|
作者：
Babilius, Arturas [1 ]
Babilius, Kazys [1 ]
机构：
[1] Kaunas Univ Technol, Mfg Technol Dept, LT-44025 Kaunas, Lithuania
来源：
MATERIALS SCIENCE-MEDZIAGOTYRA | 2009年 / 15卷 / 03期
关键词：
powder; thermally sprayed; coating; adhesive strength; surface morphology; BEHAVIOR; WEAR;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
WC-12%Co powder of 53 mu m-63 mu m particle size were thermally sprayed by using high velocity oxygen fuel gun (HVOF) MicroJet and modified gas flame gun TopJet/2. Gas ratio during the spraying time was sistematically varied to define influence of spraying parameters on the quality of coatings. Adhesive strength test were carried out by pull-off the pin method using an original device. Surface morphology investigation of the WC-12%Co coatings, sprayed by the MicroJet gun and modified gas flame gun TopJet/2, showed that the increase of the fuel gas flow rate resulted in reduction of the surface roughness and porosity as well as improved sintering of the particles. Adhesive strength of the coatings sprayed by the MicroJet gun varies from 46.5 MPa to 59.7 MPa. Fuel gas flow rate increase resulted to sudden increase of the adhesive strength. The adhesive strength of coating sprayed by modified TopJet/2 gun was smaller.
引用
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页码：207 / 211
页数：5
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