Molybdenum Oxide Coatings Deposited on Plasma Nitrided Surfaces

被引:1
|
作者
Moncao, Renan Matos [1 ]
Danelon, Miguel Rubira [2 ]
de Almeida, Larissa Solano [3 ]
Rossino, Luciana Sgarbi [2 ,3 ]
Marciano, Fernanda Roberta [4 ]
de Carvalho Costa, Thercio Henrique [5 ]
Feitor, Michelle Cequeira [5 ]
do Nascimento, Ruben Maribondo [5 ]
Magalhaes de Sousa, Romulo Ribeiro [1 ]
机构
[1] Univ Fed Piaui, Dept Engn Mecan, Teresina, PI, Brazil
[2] Fac Tecnol Sorocaba FATEC, Sorocaba, SP, Brazil
[3] Univ Fed Sao Carlos UFSCar, Sorocaba, SP, Brazil
[4] Univ Fed Piaui, Dept Fis, Teresina, PI, Brazil
[5] Univ Fed Rio Grande do Norte, Programa Posgrad Engn Mecan, Natal, RN, Brazil
关键词
molybdenum oxide; coatings; plasma nitriding; micro abrasive wear; CATHODIC CAGE; CORROSION-RESISTANCE; WEAR BEHAVIOR; STEEL;
D O I
10.1590/1980-5373-MR-2021-0469
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Molybdenum trioxide (MoO3) thin films are generally deposit on metallic surfaces to increase their tribological performance. In this manuscript, MoOx coatings were for the first time deposited on plasma nitrided surfaces. Vickers microhardness tests, X-ray diffractometry, and micro abrasive wear tests characterized the samples. It was investigated the effect of temperature in hardness and tribological properties of austenitic stainless steel surfaces. When the temperature of plasma nitriding increases, the coating thickness and the nitrogen diffusion on the treated surface also increases, favoring the hardness of the coatings. After MoOx deposition, the predominant MoO3 phase with monoclinic and orthorhombic unit cells was observed. MoOx coatings after plasma nitriding demonstrated the highest wear resistance.
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页数:6
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